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WOW! Good grief! I'll bet recoil would be bad, but not shoulder breaking like some would think. Anyhow- my RN50 is supposed to ship in August or September. I'm anxious but try not to think about it. View Quote Recoil is no worse on short barreled .50s than longer barreled ones. We did a bunch of testing on barrel lengths down to 16" when I was at Barrett. When I worked at Serbu, we did some 16" barreled BFG's. They weren't bad to fire at all. |
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Recoil is no worse on short barreled .50s than longer barreled ones. We did a bunch of testing on barrel lengths down to 16" when I was at Barrett. When I worked at Serbu, we did some 16" barreled BFG's. They weren't bad to fire at all. View Quote View All Quotes View All Quotes Quoted:
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WOW! Good grief! I'll bet recoil would be bad, but not shoulder breaking like some would think. Anyhow- my RN50 is supposed to ship in August or September. I'm anxious but try not to think about it. Recoil is no worse on short barreled .50s than longer barreled ones. We did a bunch of testing on barrel lengths down to 16" when I was at Barrett. When I worked at Serbu, we did some 16" barreled BFG's. They weren't bad to fire at all. This is the truth! Not only is the projectile being pushed for a shorter time (developing less recoil) but the gas pressure is much higher when the projectile uncorks at the end of the barrel which makes the muzzle brake work even better (cancelling recoil) My 17.5 pound 18" Ultramag is a much softer shooter than my heavier 29" BFG-50 |
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One thing to watch out for using a short barreled .50 is unburnt powder. Those little sticks coming out at .50 velocity hurt when they come out of the barrel.
Not really a worry for the shooter but people shooting next to you will get blasted. |
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One thing to watch out for using a short barreled .50 is unburnt powder. Those little sticks coming out at .50 velocity hurt when they come out of the barrel... View Quote That unburned powder also causes accelerated muzzle brake erosion! The brake works better, but gets "sand blasted" by the grains, which wears a chamfer into the thru-holes of the brake. |
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I had to clean up a few of my brakes with a dremel tool because of unburnt kernels of powder peening the inside of the brake and gradually making the hole smaller.
I first noticed it at a match I was getting erratic groups. Took the brake off to clean the barrel. I looked through the brake to see how dirty it was and saw the edges of the hole were peened inward and the hole wasn't round. |
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That EOthingy doesn't stand a chance. View Quote View All Quotes View All Quotes Quoted:
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https://scontent.fsnc1-1.fna.fbcdn.net/hphotos-xpt1/t31.0-8/12794715_10153192704751116_581137695112263834_o.jpg You guys see the 16" Insanity machine on FB? That EOthingy doesn't stand a chance. Psssshhh |
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Working out two issues with my building on this future purchase:
-What scope mount/height would work best with a piece of glass on this gun? It looks like the rail is raised a bit already. -Are AR buffer tubes/adjustable plastic stocks able to handle the recoil of a the .50 BMG in the normal length barrel? If anyone more experienced with .50 cal rifles can weigh in it would be very welcome. Thanks. |
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Working out two issues with my building on this future purchase: -What scope mount/height would work best with a piece of glass on this gun? It looks like the rail is raised a bit already. -Are AR buffer tubes/adjustable plastic stocks able to handle the recoil of a the .50 BMG in the normal length barrel? If anyone more experienced with .50 cal rifles can weigh in it would be very welcome. Thanks. View Quote I was wondering about this too. I honestly may just put a red dot on this one though. I personally wouldn't use a carbine tube, stock. All the force get put one the position pin IMO. I was going to order an A2 stock, but the Magpul rifle length looks a little better and is only around $60 if you already have a rifle extension laying around. |
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Working out two issues with my building on this future purchase: -What scope mount/height would work best with a piece of glass on this gun? It looks like the rail is raised a bit already. -Are AR buffer tubes/adjustable plastic stocks able to handle the recoil of a the .50 BMG in the normal length barrel? If anyone more experienced with .50 cal rifles can weigh in it would be very welcome. Thanks. View Quote I could be wrong but it looks like the same size rail that is on my BFG, in fact the rn50 looks like a bfg minus the tube and bolt assembly. I am running the lowest 30mm Badger max 50 rings and am using a Nightforce 8-32x56 mm scope. |
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I'm on the first shipment list, have not received my phone call yet. I did order a stock from Safety Harbor Firearms, looks pretty nice and substantially cheaper. View Quote View All Quotes View All Quotes Quoted:
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Anyone hear if the first shipment went out yet? I'm on the first shipment list, have not received my phone call yet. I did order a stock from Safety Harbor Firearms, looks pretty nice and substantially cheaper. I saw that too. I'm thinking about it. I'm supposed to hear something August or Sept. I'm expecting it to be much later though. |
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While I love 50 bmg rifles, this one I just don't get.
Maybe if it was $500, but I don't see it being a big seller with the amount of 50 bmg uppers available in any configuration that you don't need to register and can be shipped to your door. Is there anything to stop it from firing, if you accidentally let the hammer go while cocking it ? |
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While I love 50 bmg rifles, this one I just don't get. Maybe if it was $500, but I don't see it being a big seller with the amount of 50 bmg uppers available in any configuration that you don't need to register and can be shipped to your door. Is there anything to stop it from firing, if you accidentally let the hammer go while cocking it ? View Quote Can I touch a complete upper for $800? Ain't no registration for most of us. I'm curious about the hammer, but I'd guess it's safe. |
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Do you think Mark Serbu would risk his business backing an unsafe upper?
I think not, if he's backing it you can bet that if it's not safe it won't hit the market. |
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I meant fill a 4473 out, not register. It was a long day.
I'm not saying the rifle is unsafe, I'm just asking that if you "accidentally" let the hammer go before it locks onto the trigger sear, could it set off the round in the chamber ? Any firearm is safe until you add the human factor into the equation. |
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I meant fill a 4473 out, not register. It was a long day. I'm not saying the rifle is unsafe, I'm just asking that if you "accidentally" let the hammer go before it locks onto the trigger sear, could it set off the round in the chamber ? Any firearm is safe until you add the human factor into the equation. View Quote It probably has a half cock like some leverguns have. Purely speculation that it does though. Mark makes awesome stuff though. They are a small shop so production is slow but it is worth the wait |
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On a few firearm Facebook pages, there are users that have had their RN50's for awhile now.
Some have some really nice Ceracoat jobs on them. |
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While I love 50 bmg rifles, this one I just don't get. Maybe if it was $500, but I don't see it being a big seller with the amount of 50 bmg uppers available in any configuration that you don't need to register and can be shipped to your door. Is there anything to stop it from firing, if you accidentally let the hammer go while cocking it ? View Quote How are you going to get a round in the chamber in the first place if you don't cock the hammer? I imagine the loading sequence is cock hammer, safe it, unscrew cap, load round, screw on cap, unsafe, fire Unless you're the kind of special needs person that would lower the hammer on a loaded chamber. Also, you're in favor of 50 uppers costing at least $1000 dollars each and more like $1500 for any one that is worth a damn, and you think a complete rifle is not only not a deal at under $1000 but that it should cost $500??? You're something else with that dizzying logic. |
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Am I the only one that wants one but thinks the reloading time schedule is ridiculous with unscrewing a cap and shit? You could never get more than maybe two or three shots off if trying to stop an incoming vehicle over like a mile long valley. SO! How about taking one of these and modifying the threads on the end cap AND on the breech by cutting away three slots to create a locking breech- a la https://en.wikipedia.org/wiki/Interrupted_screw like a howitzer breech - basically the cap will go on and do a half turn. If cut in the right spot, the threads/cap will have 100% engagement when tightened by twisting to the right but be able to be disengaged/unlocked and slide straight out with a half turn to the left. The only thing I can see going wrong with this is: (1) MDCOA: threads are weakened by being 'non-contiguous' - perhaps mitigated by slightly radiusing the cuts? (2) MPCOA: thread cut channels are not cut exactly in the correct place and do not line up right to have full engagement when tightened fully Honestly, aside from drawing up and calculating exactly where the threads would need to be ground/machined down to form the 'locking breech' channels, the work could pretty much be down by hand with a dremel and some pointy grinding tips. And time/patience. Thoughts on this? The INTERRUPTED SCREW style breech contains the force of everything from howitzers to bolt-action 2 lug .22's - which utilize the same concept, but grossly simplified. |
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Am I the only one that wants one but thinks the reloading time schedule is ridiculous with unscrewing a cap and shit? You could never get more than maybe two or three shots off if trying to stop an incoming vehicle over like a mile long valley. SO! How about taking one of these and modifying the threads on the end cap AND on the breech by cutting away three slots to create a locking breech- a la https://en.wikipedia.org/wiki/Interrupted_screw like a howitzer breech - basically the cap will go on and do a half turn. If cut in the right spot, the threads/cap will have 100% engagement when tightened by twisting to the right but be able to be disengaged/unlocked and slide straight out with a half turn to the left. The only thing I can see going wrong with this is: (1) MDCOA: threads are weakened by being 'non-contiguous' - perhaps mitigated by slightly radiusing the cuts? (2) MPCOA: thread cut channels are not cut exactly in the correct place and do not line up right to have full engagement when tightened fully Honestly, aside from drawing up and calculating exactly where the threads would need to be ground/machined down to form the 'locking breech' channels, the work could pretty much be down by hand with a dremel and some pointy grinding tips. And time/patience. Thoughts on this? The INTERRUPTED SCREW style breech contains the force of everything from howitzers to bolt-action 2 lug .22's - which utilize the same concept, but grossly simplified. View Quote I cant tell if you are trolling but you do understand there are different tools for different jobs right? If you want to slay belts of .50, go buy an M2. Too much? You cant get an M107. The RN-50 is meant for the casual shooters who want a fifty for under a grand. People need transportation. A Corvette Z06 and a Toyota Prius will both do the job but they are designed for different things and perform differently. I dont know how you dont understand this concept? |
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I think I would look at it like this, go to school to become a mechanical engineer.
Open your own business, buy hundreds of thousands of dollars of machinery. Make your own firearms, pay for insurance, pay for employees... And when a design fails, go back to the drawing board and start again and again until you get it right. Then remember that Mark is a perfectionist and has NEVER delivered on time due to it! What he does deliver is a safe and affordable product at a good price. See how simple it is? |
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How are you going to get a round in the chamber in the first place if you don't cock the hammer? I imagine the loading sequence is cock hammer, safe it, unscrew cap, load round, screw on cap, unsafe, fire Unless you're the kind of special needs person that would lower the hammer on a loaded chamber. Also, you're in favor of 50 uppers costing at least $1000 dollars each and more like $1500 for any one that is worth a damn, and you think a complete rifle is not only not a deal at under $1000 but that it should cost $500??? You're something else with that dizzying logic. View Quote View All Quotes View All Quotes Quoted:
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While I love 50 bmg rifles, this one I just don't get. Maybe if it was $500, but I don't see it being a big seller with the amount of 50 bmg uppers available in any configuration that you don't need to register and can be shipped to your door. Is there anything to stop it from firing, if you accidentally let the hammer go while cocking it ? How are you going to get a round in the chamber in the first place if you don't cock the hammer? I imagine the loading sequence is cock hammer, safe it, unscrew cap, load round, screw on cap, unsafe, fire Unless you're the kind of special needs person that would lower the hammer on a loaded chamber. Also, you're in favor of 50 uppers costing at least $1000 dollars each and more like $1500 for any one that is worth a damn, and you think a complete rifle is not only not a deal at under $1000 but that it should cost $500??? You're something else with that dizzying logic. Obviously you haven't seen the video of the rifle being fired, as you state you" imagine " what the rifles loading sequence is and then question my "dizzying logic" ???? Please refrain from posting until you know, not " imagine" what your talking about. While I only own one serbu 50 cal rifle now and I know MS wouldn't put his name on a product that's not safe, I still don't see what's to stop a round from being fired if a thumb slips while in the process of cocking the hammer fully before it latches onto the sear ? |
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How are you going to get a round in the chamber in the first place if you don't cock the hammer? I imagine the loading sequence is cock hammer, safe it, unscrew cap, load round, screw on cap, unsafe, fire Unless you're the kind of special needs person that would lower the hammer on a loaded chamber. Also, you're in favor of 50 uppers costing at least $1000 dollars each and more like $1500 for any one that is worth a damn, and you think a complete rifle is not only not a deal at under $1000 but that it should cost $500??? You're something else with that dizzying logic. View Quote View All Quotes View All Quotes Quoted:
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While I love 50 bmg rifles, this one I just don't get. Maybe if it was $500, but I don't see it being a big seller with the amount of 50 bmg uppers available in any configuration that you don't need to register and can be shipped to your door. Is there anything to stop it from firing, if you accidentally let the hammer go while cocking it ? How are you going to get a round in the chamber in the first place if you don't cock the hammer? I imagine the loading sequence is cock hammer, safe it, unscrew cap, load round, screw on cap, unsafe, fire Unless you're the kind of special needs person that would lower the hammer on a loaded chamber. Also, you're in favor of 50 uppers costing at least $1000 dollars each and more like $1500 for any one that is worth a damn, and you think a complete rifle is not only not a deal at under $1000 but that it should cost $500??? You're something else with that dizzying logic. You do understand that its a break action, right? You hinge it open to load and unload it, as well as letting the hammer down if need to. |
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I think I would look at it like this, go to school to become a mechanical engineer. Open your own business, buy hundreds of thousands of dollars of machinery. Make your own firearms, pay for insurance, pay for employees... And when a design fails, go back to the drawing board and start again and again until you get it right. Then remember that Mark is a perfectionist and has NEVER delivered on time due to it! What he does deliver is a safe and affordable product at a good price. See how simple it is? View Quote Not to mention Vulcan/Hesse tried this idea years ago. We saw how that played out. |
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Since the Serbu SU-15 upper thread died I thought this might be pertinent to anyone wondering what happened to that product:
Mark has released the following update on the SU-15 to our Facebook page today 12/9/15.
**** SU-15 UPDATE!!! **** Ok, today was the big day. The new receiver machining fixture that's been in the works for months was finally completed yesterday, and was used today. And it works! This thing ended up being way more elaborate than I'd have ever guessed it would have to be, but that's manufacturing for you. Yeah, this project is dragging on forever and it's costing me LOTS in missed opportunity and I'm sure it's pissing some people off. But we continue to be theunder-funded and understaffed company we've been for 19 years and while I'm trying to change that, it hasn't changed yet. This is a huge hurdle we've just crossed, and I'm not worried about solving this difficult problem any more. The rest of the machining is trivial. As far as a delivery date for the first units I still can't give an accurate estimate, but when I can I will. I've changed my refund policy on the SU-15. If you want your deposit back or if you paid in full you can get your money back, no problem. We thank you for your continued patience and patronage, Serbu Firearms View Quote |
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Obviously you haven't seen the video of the rifle being fired, as you state you" imagine " what the rifles loading sequence is and then question my "dizzying logic" ???? Please refrain from posting until you know, not " imagine" what your talking about. While I only own one serbu 50 cal rifle now and I know MS wouldn't put his name on a product that's not safe, I still don't see what's to stop a round from being fired if a thumb slips while in the process of cocking the hammer fully before it latches onto the sear ? View Quote View All Quotes View All Quotes Quoted:
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While I love 50 bmg rifles, this one I just don't get. Maybe if it was $500, but I don't see it being a big seller with the amount of 50 bmg uppers available in any configuration that you don't need to register and can be shipped to your door. Is there anything to stop it from firing, if you accidentally let the hammer go while cocking it ? How are you going to get a round in the chamber in the first place if you don't cock the hammer? I imagine the loading sequence is cock hammer, safe it, unscrew cap, load round, screw on cap, unsafe, fire Unless you're the kind of special needs person that would lower the hammer on a loaded chamber. Also, you're in favor of 50 uppers costing at least $1000 dollars each and more like $1500 for any one that is worth a damn, and you think a complete rifle is not only not a deal at under $1000 but that it should cost $500??? You're something else with that dizzying logic. Obviously you haven't seen the video of the rifle being fired, as you state you" imagine " what the rifles loading sequence is and then question my "dizzying logic" ???? Please refrain from posting until you know, not " imagine" what your talking about. While I only own one serbu 50 cal rifle now and I know MS wouldn't put his name on a product that's not safe, I still don't see what's to stop a round from being fired if a thumb slips while in the process of cocking the hammer fully before it latches onto the sear ? Again, cock hammer and safe it first, then break the action and load. Nothing in the video suggests you can't do this. |
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You do understand that its a break action, right? You hinge it open to load and unload it, as well as letting the hammer down if need to. View Quote View All Quotes View All Quotes Quoted:
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While I love 50 bmg rifles, this one I just don't get. Maybe if it was $500, but I don't see it being a big seller with the amount of 50 bmg uppers available in any configuration that you don't need to register and can be shipped to your door. Is there anything to stop it from firing, if you accidentally let the hammer go while cocking it ? How are you going to get a round in the chamber in the first place if you don't cock the hammer? I imagine the loading sequence is cock hammer, safe it, unscrew cap, load round, screw on cap, unsafe, fire Unless you're the kind of special needs person that would lower the hammer on a loaded chamber. Also, you're in favor of 50 uppers costing at least $1000 dollars each and more like $1500 for any one that is worth a damn, and you think a complete rifle is not only not a deal at under $1000 but that it should cost $500??? You're something else with that dizzying logic. You do understand that its a break action, right? You hinge it open to load and unload it, as well as letting the hammer down if need to. Why would you need to let the hammer down unless you're firing? |
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Guess who got the call their rifle is shipping? :)
Posted Via AR15.Com Mobile |
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What scope should i put on mine? I am thinking some kind of vortex.
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My invoice is dated Feb 10 I think. I'll get it when I get it.
I'm just happy I got it ordered and that some of you guys are getting yours. |
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The RN-50 breech cap has a octagonal nut machined into it incase you cannot remove it by hand.
Serbu warns against the use of American eagle .50 BMG due to soft brass. Posted Via AR15.Com Mobile |
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Update, Rifle did not ship, it ships today, I'm not too happy about that..but what can you do. Was looking for it to come in tomorrow.
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