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temperature could be a issue with the prime, but i have shot on the floor of a gravel pit with temps in the 90's but i dont keep ammo in the sun so i have no idea how hot it actually was. i also switched my tobr to the smaller firing pin model so it might hold up a little better,
anyone else have issues blowing primers with the prime? |
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Originally Posted By icecold1: temperature could be a issue with the prime, but i have shot on the floor of a gravel pit with temps in the 90's but i dont keep ammo in the sun so i have no idea how hot it actually was. i also switched my tobr to the smaller firing pin model so it might hold up a little better, anyone else have issues blowing primers with the prime? View Quote Large firing pin here so I was also getting primer flow with the Prime and blown primers at higher temps. However, we're usually in direct sun all day and while I don't let my rounds bake in the sun, they could have been higher than ambient. |
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Originally Posted By DuneShoot: 9-24-18 https://www.ar15.com/media/mediaFiles/247601/LT260_9-24-18-1_jpg-2351782.JPG View Quote Nice, and properly suppressed too - no heathen! I've been busy with travel and walking where the Centurions were 2000 years ago, while still attending to some work... |
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Nice.
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Very nice - what are the specs?
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Accuracy International AT-X in Dark Earth. Replaced the 6.5cm barrel with a 6BR. S&B SOCOM overrun scope, which is basically a 5-25 PMII.
Waited a year for this rifle to arrive. I'm calling it my Medicare rifle as I turn 65 next month. |
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Sweet
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Anyone running a LPVO on their 5.56's? If so, any feedback? Was thinking of getting a 5.56 ready for a Quantified Performance gas gun match but the LPVO I have is only 1-6 and my older eyes may like 1-8 or even a 1-10.
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I have a Razor II-E 1-6 on my tOBR lite and I have been debating on grabbing the ATACR 1-8 or a Kahles. The 1-6 was my first LPVO and I like it. I have swapped it over to my tOBR heavy with a 16" .308 a few times when hog hunting in Texas. Initially, I was on the fence about the magnification range on the high end but after a few downed hogs at 375-425 yds from an elevated blind my thoughts have changed.
The old Razor is a tank on the tOBR lite, but the lighter options would prob be perfect. Darlene, Eleanor, Lucille and Mary Ann are all sharp-looking ladies, don't let anyone tell you otherwise. |
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Originally Posted By Berger24: I have a Razor II-E 1-6 on my tOBR lite and I have been debating on grabbing the ATACR 1-8 or a Kahles. The 1-6 was my first LPVO and I like it. I have swapped it over to my tOBR heavy with a 16" .308 a few times when hog hunting in Texas. Initially, I was on the fence about the magnification range on the high end but after a few downed hogs at 375-425 yds from an elevated blind my thoughts have changed. The old Razor is a tank on the tOBR lite, but the lighter options would prob be perfect. Darlene, Eleanor, Lucille and Mary Ann are all sharp-looking ladies, don't let anyone tell you otherwise. View Quote Regarding the Kahles, word is the i6 is a lot dimmer than the 8. |
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Thanks for the info. I have read mixed reviews on the 6. Good to know they realized that and improved upon the 8.
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Originally Posted By Defender3: Anyone running a LPVO on their 5.56's? If so, any feedback? Was thinking of getting a 5.56 ready for a Quantified Performance gas gun match but the LPVO I have is only 1-6 and my older eyes may like 1-8 or even a 1-10. View Quote I have a pst 1-6 on my work 12.5” gun. Ran it in a Defoor carbine class and swat school, it’s fine, does what it’s supposed to. I’m probably going to get a 1-10 to replace my 2.5-10 on one of my 16” guns. Can’t see a down side to it and it’d probably be about right for some kind of comp gun. What distance are you shooting to in those kinds of matches? |
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Distances out to 750yds. I have a Leupold Mk6 1-6 but there is such a difference between 6x and 10x that I have to go higher. Might go NF 1-8 or Vortex 1-10, but have to dump the Mk6 first.
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Originally Posted By Defender3: Distances out to 750yds. I have a Leupold Mk6 1-6 but there is such a difference between 6x and 10x that I have to go higher. Might go NF 1-8 or Vortex 1-10, but have to dump the Mk6 first. View Quote 750 on 10x with a 223 might be sporty. what about a 5-20 or something? |
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Originally Posted By Defender3: Accuracy International AT-X in Dark Earth. Replaced the 6.5cm barrel with a 6BR. S&B SOCOM overrun scope, which is basically a 5-25 PMII. Waited a year for this rifle to arrive. I'm calling it my Medicare rifle as I turn 65 next month. View Quote I can relate - just turned 68. |
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Originally Posted By Defender3: AI family photo, Darlene, Eleanor, Lucille and Mary Ann (300PRC, 260R, 6BR and a Vudoo 22LR in an AICS). https://www.ar15.com/media/mediaFiles/52736/IMG_2286-2-2364945.jpg https://www.ar15.com/media/mediaFiles/52736/IMG_2281-2-2364943.jpg https://www.ar15.com/media/mediaFiles/52736/IMG_2272-2-2364941.jpg View Quote |
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Does anyone have the weight for the 22'' and 20'' .260 rifle without optics, lights, lasers, bipods, etc?
I am trying to figure out the weights of everything, and I don't have a kitchen scale at home. Also, does anyone have the weight of the 14.5'' .308 PredatOBR as well? |
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Originally Posted By mban2: Does anyone have the weight for the 22'' and 20'' .260 rifle without optics, lights, lasers, bipods, etc? I am trying to figure out the weights of everything, and I don't have a kitchen scale at home. Also, does anyone have the weight of the 14.5'' .308 PredatOBR as well? View Quote I don't have weights. Also don't think I'll be taking anything off to check. |
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I think my 14.5 was 8.6 pounds nekkid.
With a 22" barrel and long HG it was like 12.5 pounds. I have everything in a case and it's real heavy. Attached File |
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What are replacement 18” .260 barrels going for these days?
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Originally Posted By Defender3: New arrival, waited a year for this one! https://www.ar15.com/media/mediaFiles/52736/IMG_2244-2364583.jpg View Quote Mount is backwards |
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Need an explanation on this magical mystery:
Rifle is a 6mm CM from Seekins. Been using factory Hornady 108 ELDM ammo since it shoots so good. Stumbled into ammo with: Lapua brass, H4350, with what we were told were Berger 95gr Hunter bullets. Measured speed of the 108's a few times, they are just over 2900 fps. Measured 2 five round strings of the 95's. 1st string averaged 3098, 2nd string was 3147 fps. Out side temp 85-90. I expected a lighter bullet to be faster. Took them to 1K yards yesterday. My App said 5 MOA difference between the 95's and 108's. However the exact same elevation was needed to make contact. WTF!? Today I shot two 5 round groups at 90 yards comparing them. Elevation is about the same. How can this be!? Berger on left, Hornady on right: Attached File Today's groups: Attached File Yesterday at the range: Attached File |
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Pull a bullet and see if its really a 95?
Frank says speed kills, they're obviously hotter, maybe its enough to make it even with the 'slower' 108. Did you try another program to see what it says? |
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They weight 95 each bullet.
Did not try another program. |
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Originally Posted By DuneShoot: Need an explanation on this magical mystery: Rifle is a 6mm CM from Seekins. Been using factory Hornady 108 ELDM ammo since it shoots so good. Stumbled into ammo with: Lapua brass, H4350, with what we were told were Berger 95gr Hunter bullets. Measured speed of the 108's a few times, they are just over 2900 fps. Measured 2 five round strings of the 95's. 1st string averaged 3098, 2nd string was 3147 fps. Out side temp 85-90. I expected a lighter bullet to be faster. Took them to 1K yards yesterday. My App said 5 MOA difference between the 95's and 108's. However the exact same elevation was needed to make contact. WTF!? Today I shot two 5 round groups at 90 yards comparing them. Elevation is about the same. How can this be!? Berger on left, Hornady on right: https://www.ar15.com/media/mediaFiles/247601/IMG_5565_jpg-2376637.JPG Today's groups: https://www.ar15.com/media/mediaFiles/247601/IMG_5573_jpg-2376639.JPG Yesterday at the range: https://www.ar15.com/media/mediaFiles/247601/IMG_5566_jpg-2376640.JPG View Quote Are the Berger's factory loaded? If so, it is probably not H4350 but something similar, but slightly different so people do not try and duplicate the load, mess it up and sue Berger/Lapua. If they are handloads, send me the load and I'll run it in Quickload. Also need barrel length and OAL. Given the speed of each load, I would not expect an appreciable difference in POI at 90yds. The lighter bullet is faster by 150fps, but what powder and charge was used in each load? You could have a faster powder equivalent in one (Varget) than the other (H4350), so the pressure curve peaks differently. The 108's may have (as a percentage) a lower powder charge but a higher pressure curve, or a variation. Regardless, the lighter bullet is moving faster, but what is the BC (G7) of one vs the other? The air temp, ammo temp, density altitude, humidity and G7 may be a factor at 1,000y, but 5MOA seems extreme. Could be the speed calculations are off or maybe the BC for the 108 is far superior to the 95. What ballistic program are you running? |
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Originally Posted By Defender3: Are the Berger's factory loaded? If so, it is probably not H4350 but something similar, but slightly different so people do not try and duplicate the load, mess it up and sue Berger/Lapua. If they are handloads, send me the load and I'll run it in Quickload. Also need barrel length and OAL. Given the speed of each load, I would not expect an appreciable difference in POI at 90yds. The lighter bullet is faster by 150fps, but what powder and charge was used in each load? You could have a faster powder equivalent in one (Varget) than the other (H4350), so the pressure curve peaks differently. The 108's may have (as a percentage) a lower powder charge but a higher pressure curve, or a variation. Regardless, the lighter bullet is moving faster, but what is the BC (G7) of one vs the other? The air temp, ammo temp, density altitude, humidity and G7 may be a factor at 1,000y, but 5MOA seems extreme. Could be the speed calculations are off or maybe the BC for the 108 is far superior to the 95. What ballistic program are you running? View Quote Measured speed of 10 rounds, 1st 5 averaged 3098 with an SD of 73.3!, 2nd 5 averaged 3147 with an SD of 9.4. The 73.3 SD is weird. 1st round in that string was 2979, 5th round was 3173. Factory Hornady ELDM 108gr COAL 2.789 The 1st 40 rounds through the rifle averaged 2893. Last time I measured speed was after a couple hundred rounds through the rifle and got an average of 2965 although in my app I have it at 2850, I must have trued it at some point while shooting at distance, not sure. Links to each bullet (with BC) are in my 1st post. I use Ballistic ARC app, has been pretty good. Rifle is a Seekins Havak Bravo with 24" barrel with suppressor. |
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Originally Posted By DuneShoot: I got the rounds from someone who worked at Lapua so I assume they are factory loaded. A friend pulled a few down and he thought the powder was H4350, 39.1gr 2.189 BTOG (?). I measured COAL at 2.716 Measured speed of 10 rounds, 1st 5 averaged 3098 with an SD of 73.3!, 2nd 5 averaged 3147 with an SD of 9.4. The 73.3 SD is weird. 1st round in that string was 2979, 5th round was 3173. Factory Hornady ELDM 108gr COAL 2.789 The 1st 40 rounds through the rifle averaged 2893. Last time I measured speed was after a couple hundred rounds through the rifle and got an average of 2965 although in my app I have it at 2850, I must have trued it at some point while shooting at distance, not sure. Links to each bullet (with BC) are in my 1st post. I use Ballistic ARC app, has been pretty good. Rifle is a Seekins Havak Bravo with 24" barrel with suppressor. View Quote A quick run in Quickload, using 39.1grs of H4350, with COAL and 24" barrel resulted in an estimated speed of 2846fps. The same charge weight in Varget stated 3103fps. Using the suppressor could add 15-25fps, shooing when it was hot also adds to the pressure. Neither load was over chamber pressure, but the Varget was approaching max. |
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Originally Posted By bfk4lyfe: Don't joke about that, some of us actually suffer from that ailment When is the 6br going to make it to the range?? View Quote Oh boy, 76 degrees at 0400 in the AOR with a forecast of 93. Might try and shoot the BR just to get on paper and do some velocity and load work next week sometime. |
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Ha, so now I'm starting to read that PRS shooters are possibly moving back to the 6.5CM, but loaded slower for the better BC and wind characteristics.
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Originally Posted By Defender3: Ha, so now I'm starting to read that PRS shooters are possibly moving back to the 6.5CM, but loaded slower for the better BC and wind characteristics. View Quote Go figure, lobbing a 105 at 2750 in a game where the top is separated by only a few points isn't the best strategy. I could see a 6CM being the way to go tho, say with a 110 at 3199 or so. |
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Originally Posted By bfk4lyfe: Go figure, lobbing a 105 at 2750 in a game where the top is separated by only a few points isn't the best strategy. I could see a 6CM being the way to go tho, say with a 110 at 3199 or so. View Quote Who knows, they're just opinions. Top shooters will continue to be top shooters. |
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I might shoot some rounds this weekend
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Originally Posted By Defender3: Wearing a long bridge and I'll try the Sandman-L, then the SOCOM 7.62-RC. https://www.ar15.com/media/mediaFiles/52736/IMG_2575__002_-2394686.jpg https://www.ar15.com/media/mediaFiles/52736/IMG_2578__002_-2394683.jpg View Quote I am awaiting a dominus sr, I had to try the larger diameter can. 12.5 Oz with their rating I figured a no brianer. I toyed toyed with the 338 sr Gen 2, and the magnus, but I wanted to keep it somewhat compact with the 22 in 260 barrel. |
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Originally Posted By mettee: I am awaiting a dominus sr, I had to try the larger diameter can. 12.5 Oz with their rating I figured a no brianer. I toyed toyed with the 338 sr Gen 2, and the magnus, but I wanted to keep it somewhat compact with the 22 in 260 barrel. View Quote So, you'll be doing some full auto? |
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Breaker of Threads
“An unarmed man can only flee from evil, and evil is not overcome by fleeing from it." - Lt.Col. Jeff Cooper Cheesecake OG. Cold War 1, 2, 3, and 4. Foreign War 1. |
Originally Posted By TLF: I don’t know how you spent your Monday, but this is how I spent mine. https://www.ar15.com/media/mediaFiles/103177/70096864-C1AA-4599-9426-9F1B1C118FF3-2395870.jpg View Quote All to yourself? Sharing is caring Brother... |
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Originally Posted By TLF: I don’t know how you spent your Monday, but this is how I spent mine. https://www.ar15.com/media/mediaFiles/103177/70096864-C1AA-4599-9426-9F1B1C118FF3-2395870.jpg View Quote Afraid to get in the bow with the girls? |
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