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Posted: 4/23/2012 6:44:06 PM EDT
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I currently have a 300 blackout 16" Carbine gas system barrel. I was trying to tame what little recoil it does have so my daughter will enjoy shooting it more than 2 or 3 times. I have read that a heavy or extra heavy buffer helps to reduce recoil. Is this noticeable or just a sales pitch. I know it will slow the cycle rate down, but I don't see how it will reduce the felt recoil. Because the heavier buffer is slower, but simple physics would say that the heavier item has more momentem and still has the same or more recoil.
I also was interested in the Endine hydraulic buffer system or something similiar. That does make sense to me but does it make a big difference in felt recoil on the shoulder. Please give your opinion and what your expierence has been with the above items. |
| not sure if they would feed reliably but what about running a lightweight bullet like 60-88gr (used for 32acp, 7.62 tokarev) then maybe use a slower powder like 1680 (higer gas volume less velocity) I just got my barrel and planned on trying 110gr lead 30 carbine bullets under a full case of slow powder. you could try removing the plastic buffer spacers and tossing in 2 smashed 45 bullets to add some weight to see if there is a change. then buy a appropriate buffer if you like the result. |
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Most guys are running a heavier buffer to cycle suppressed reliably. The preferred buffer is Spike's ST-T2 buffer. And like anything else 300BLK, it's been out of stock for a while. My setup is the Noveske 8 inch barrel with the T2 and a JP spring, and a Wilson 16 inch barrel with a T1 and a JP spring. The JP spring as benefits over the standard springs and has 7% more tension (I think). Both firearm cycle supersonic ammo regardless of which buffer I use (standard, T1, and T2). The cycle issues come up when you want to shoot subsonic without a suppressor. Even more problems when you want to shoot it from a 16 inch instead of a 8 inch. I'm in California, so I have no experience with a suppressor. If I wanted to shoot sometime subsonic, I would shoot a 1911. It would make a bigger hole.
In my experience, felt recoil is reduced because the recoil is spread over a longer period of time. Instead of a sudden thump, it is a quick push. So say to have a Mustang and a F150, Assume that both have the same engine and the same horse power. You want to get both cars to 30 mph as fast as possible. One is faster but more violent, and the slower is more pleasant. Both get to 30 and the fuel burned is about the same. Recoil from the 300BLK is very soft. It feels lighter then my 40 S&W pistol AR (with the same buffer/spring). I don't think a hydraulic buffer will give you a lighter recoil. It will however, make your wallet lighter. |
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I agree with the above about a heavier buffer. It may change the characteristics of the recoil, but it still transfers all the energy of the recoil to the shooter.
Have you given subsonics a try? The 300 BLK's recoil isn't too bad to begin with, but the subsonics are significantly softer shooting. They're just expensive until you start reloading. 
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I am in the process of building my first 300BLK. I had planned on using the standard Rock River carbine buffer components. I will be shooting supers and subs both with and without the suppressor. Any assistance through experience is very much appreciated.
346ci.... no need for you to comment Thanks, 8654 |
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Quoted:
I am in the process of building my first 300BLK. I had planned on using the standard Rock River carbine buffer components. I will be shooting supers and subs both with and without the suppressor. Any assistance through experience is very much appreciated. 346ci.... no need for you to comment Thanks, 8654 LOL! I use an m16 carrier and an H buffer and a 7.62 sd can. Supers and subs. Both function great, and both are super soft. This is out of an 8" barrel. |
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Quoted:
I am in the process of building my first 300BLK. I had planned on using the standard Rock River carbine buffer components. I will be shooting supers and subs both with and without the suppressor. Any assistance through experience is very much appreciated. 346ci.... no need for you to comment Thanks, 8654 Start with a barrel that is ported to run subsonics unsuppressed through supersonics suppressed, if that is important to you. That pretty much leaves Noveske and maybe CMMG off the list. |
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GLK34:
I'm using a Wilson Combat 11.3" barrel and will have the 762SDN suppressor on it as well. QuietRiot11: You think the Wilson Combat 11.3" barrel has the porting you speak of? Of course, I have a good friend that is a great gunsmith. I can mak the port any size I want. Additionally, at some point in the future, i may have my buddy make it an 8" barrel (or at least shorter). Let me know your thoughts, please. Thanks, 8654 |
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What ammo are you using?
I find the 125's at 2150fps are a little sharp in the recoil but the 175's at 1150fps are a light push. The Remington 220gr sub sonics do not always cycle the rifle but kick like a butterfly fart. Both cycle the rifle just fine with a standard carbine buffer. |
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Quoted:
What ammo are you using? I find the 125's at 2150fps are a little sharp in the recoil but the 175's at 1150fps are a light push. The Remington 220gr sub sonics do not always cycle the rifle but kick like a butterfly fart. Both cycle the rifle just fine with a standard carbine buffer. I have some PNW, Cor-Bon, Remington... but I will reload eventually as well. I have about 1000 240gr. SMK's and want to see what they do. Also have some Barnes 110 black tip... will load those too. I guess, without further guidance, I'll just have to trial and error. Obviously, I will only drill out the gas port as a last option. Still, experience and opinions welcome.... Thanks, 8654 |
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I guess the heavy buffer being slower would make sense. I wil give it a try. As stated earlier, I know the recoil is very mild, but to a 70 pound girl it is more than a 22 lr for sure. She can shoot it well, but after a couple of rounds, she is ready to stop. I was wanting to make it more enjoyable for her to shoot more. While still using the caliber she willhunt with not a 22Lr or 223 just for confidence sake.
Do you think it will cycle with the H2 5 oz buffer or will it short stroke with that heavy a buffer. FYI I am only shooting super sonic rounds and it is a 16" CMMG carbine length gas system barrel. |
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This is the heaviest buffer recommended.
http://www.spikestactical.com/new/z/lower-parts-spikes-stt2-heavy-buffer-p-201.html 5 .oz will short stroke. Also, have you considered this? http://www.riflegear.com/p-1176-umarex-hk-mp5-sd-22lr-rifle.aspx Most fun you will have with $5 worth of ammo. |
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A 6.5 oz HSS Tungsten buffer will work fine with a carbine type stock. Heavier buffers help reduce felt recoil because Force = Mass x Velocity^2 Since velocity is an exponential factor, it has much more bearing on the final result than Mass The extra mass of the buffer itself causes a minimal increase, decreasing the velocity of the BCG significantly reduces felt recoil. |
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