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I've alluded to the fact in other threads that I was building a heavy barreled bolt gun in 7.62x39 around a Stevens 200 action. Well this weekend I finally got things put together and made it to the range for some break in time. All 5 shot groups except for one were fired through a squeaky clean bore except for one. It was fired through a fouled bore and was the best group of the day Measuring under 1/2 MOA:neener: None of the groups fired measured over an inch, which leaves me pretty excited as to whet this gun can do with more load development and a new trigger. Especially once my neck turning equipment arrives. The stats on the rifle are as follows Stevens 200 SA that started life as a .223 Shilen Match bull BBL 26" 1-15" twist on a .308 bore chambered for 7.62x39 SSS recoil lug ScoreHi benchrest follower. Modified factory bolt head compliments of Dan Burnside Choate ultimate varmint stock Leupold mounts and rings Leupold VXIII 4.5x14x40AO scope Stock trigger In the velocity dept this bbl really puts it on my much shorter CZ527 carbine's tube Loads that average 2325 FPS in the 18" CZ blast out at an impressive 2595 FPS from the Steven 200's 26" pipe. With a load that's 2grs from MAX ---------------------------------------- If you waste your time a talkin' to the people who don't listen To the things that you are sayin' who do you thinks gonna hear And if you should die explainin' how the thing they complain about Or the things they could be changing who do you thinks gonna care Waylon Jennings | ||
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I like that .467 group! Looks like it should shoot great! Love shooting precision and long range. Big bores too! Recent college grad, started a company called MK Machining where I'm developing a bullpup rifle chassis system. | |||
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Totally Impressed. Nice project. From that twist is it safe to assume you're going to use light for caliber bullets? Do you have any plans for cast? roger Old age is a high price to pay for maturity!!! Some never pay and some pay and never reap the reward. Wisdom comes with age! Sometimes age comes alone.. | |||
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Krochus.. I wouldn't have a clue why someone would put together a project like that.... ( but then again, don't ask me about some of the weird ideas I can come up with also...) Notwithstanding tho, the project turned out to be a pretty darn impressive completion... I like those of us who think 'outside the box' on some of this... Great results... Life Member: The American Vast Right Wing Conspiracy Jan 20, 2009.. Prisoner in Dumocrat 'Occupied America', Partisan in the 'Save America' Underground Beavis..... James Beavis..... Of Her Majesty's Secret Service..... Spell Check Division "Posterity — you will never know how much it has cost my generation to preserve your freedom. I hope you will make good use of it." John Quincy Adams A reporter did a human-interest piece on the Texas Rangers. The reporter recognized the Colt Model 1911 the Ranger was carrying and asked him "Why do you carry a 45?" The Ranger responded, "Because they don't make a 46." Duhboy....Nuttier than Squirrel Poop... | |||
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I think you have a definate winner there.. Love the 110 weight. Surprised that you went with the VV 120, as AA 1680 is mighty fine as well. You might consider IMR 4227, the Remington brass with the small pockets is way more pressure resistant... FYI! Then again I shoot heavier bullets in my Wiseman/Sako 7.62 x 39 which has a 1 in 12 twist. Member NRA, SCI- Life #358 28+ years now! DRSS, double owner-shooter since 1983, O/U .30-06 Browning Continental set. | |||
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From some of your projects I wonder if we share the same gene pool? roger Old age is a high price to pay for maturity!!! Some never pay and some pay and never reap the reward. Wisdom comes with age! Sometimes age comes alone.. | |||
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I cannot imagine how small a group you could shoot with a higher magnification scope; like my Bushnell Elite 4200 in 8-32X or a straight 36X. There is something to be said for a scope with enough magnification to let you hold off half a bullet hole at 200 yds. Congrats on assembling a nice accurate rifle. Rich DRSS Knowledge not shared is knowledge lost... | |||
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Did this barrel arrive ready for you to install? roger Old age is a high price to pay for maturity!!! Some never pay and some pay and never reap the reward. Wisdom comes with age! Sometimes age comes alone.. | |||
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Yes it did! Threaded and fully chambered ready to roll with the proper bolt face modifications. LOL and since you drug my thread back to the top I'm gonna slap you up side the head with some more great groups. How's that MAS shootin? ---------------------------------------- If you waste your time a talkin' to the people who don't listen To the things that you are sayin' who do you thinks gonna hear And if you should die explainin' how the thing they complain about Or the things they could be changing who do you thinks gonna care Waylon Jennings | |||
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If it is supported directly under the magazine it shoots great. If it is supported under the hand gaurd the group really opens up. But it sure looks nice. I feel a little fogy from all that head slapping but not enough not to recognize some great performance. roger Old age is a high price to pay for maturity!!! Some never pay and some pay and never reap the reward. Wisdom comes with age! Sometimes age comes alone.. | |||
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On my MAS I have the barrel bedded TIGHT inside the upper and lower handguard and also have a bbl mounted recoil lug. My rifle suffers from no such issues ---------------------------------------- If you waste your time a talkin' to the people who don't listen To the things that you are sayin' who do you thinks gonna hear And if you should die explainin' how the thing they complain about Or the things they could be changing who do you thinks gonna care Waylon Jennings | |||
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Excellent! I keep trying to tell people that the 7.62X39mm is a very accurate round, and all one need do is use it in an accurate rifle! You have proved this. The bottom group, although only three shots, is typical of my CZ 527, but as you note, it only gives 2300 FPS (150-grain, .308" Sierra bullet w/H335). "Bitte, trinks du nicht das Wasser. Dahin haben die Kuhen gesheissen." | |||
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---------------------------------------- If you waste your time a talkin' to the people who don't listen To the things that you are sayin' who do you thinks gonna hear And if you should die explainin' how the thing they complain about Or the things they could be changing who do you thinks gonna care Waylon Jennings | |||
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Serious interest!!!! What powders are you going to try next? roger Old age is a high price to pay for maturity!!! Some never pay and some pay and never reap the reward. Wisdom comes with age! Sometimes age comes alone.. | |||
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I'm thinking this is pretty interesting too. I looked back over this discussion, and didn't see what brass you are using. I'm curious because some have said the Rem brass with the small primer pocket is best for accuracy? I dunno? It's also interesting the accuracy is impressive at 300 meters, considering the really slow twist rate you are using. Obviously the bullets are stabelizing out there. I have a CZ and a Ruger in 7.62x39, neither are .308 though, .311 instead but close enough to compare. I haven't shot the Ruger yet, but the CZ is very accurate. I thought about making one up with a .308 barrel, but I don't think I'll do that. It's too difficult to replace an accurate barrel for .003. KB ~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~ ~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~ | |||
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But --- I also have a mini-mauser action with the correct bolt face for the 7.62x39, and I bought a Gentry three-position safety for it. Yes they make one. I have the MPI stock for it, which should make up into a really light, and compact rifle. It's interesting to consider the options of going with a .308 barrel with a slow twist rate. I think the twist rate options with .311 barrel is limited to just one choice per mfg. Another good choice is the 6.5 somethingorother, which would solve the precieved problem of having the same cartridge on the shelf (or maybe in the magazine) with two different bullet diameters. KB ~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~ ~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~ | |||
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The only other powder worth trying would be aa1680 that I happen to have a couple lbs of. BUT in all honestly I cannot imagine how it would preform any better than n-120. Velocity for both bullets was in the upper 2700fps range.
I'm using sorted remington cases for all loads.Just be prepared to discard a lot of cases as the weight on RP brass is all over the place ---------------------------------------- If you waste your time a talkin' to the people who don't listen To the things that you are sayin' who do you thinks gonna hear And if you should die explainin' how the thing they complain about Or the things they could be changing who do you thinks gonna care Waylon Jennings | |||
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I bought a box of 100 Lapua brass, because I learned to trust it in other cartridges. At the time I didn't know there might be a difference in performance, depending on primer size. I just figured Lapua knows what they are doing. I'm not planning on discarding any of the Lapua brass. I have some winchester and remington brass too. Anyway, just curious. KB ~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~ ~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~ | |||
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Your selection of parameters is genuinely estute for the light bullets. JMHO.Maybe you have the best powder already but playing with h110 thru acc1680 would be interesting. roger Old age is a high price to pay for maturity!!! Some never pay and some pay and never reap the reward. Wisdom comes with age! Sometimes age comes alone.. | |||
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As an interesting experiment I tried to make the 7.62 x 39 shoot the 110 V-Max with LiL Gun thinking what a great powder LiL Gun is in the hornet, and it's also good for the .44 Mag etc... DON'T GO THERE! While I still can't believe it didn't perform miracles... back to AA 1680 only 17 more pounds to go. In my experience heavy bullets work well with VV 130 and T32. Member NRA, SCI- Life #358 28+ years now! DRSS, double owner-shooter since 1983, O/U .30-06 Browning Continental set. | |||
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I have a bolt action 7.62x39 on the way (Mini Mark X w/factory 20" barrel). I'm planning to try Hornady .308 130's in it initially as it is intended as a Hill Country deer rifle. I have some AA 2200 still on hand which looks like a good bet. Also have on hand H-335/WC-844, AA1680, H4198, IMR 4198, IMR 4227, and Lil Gun. I'd appreciate hearing some loads and velocities from bolt guns in this caliber. While pressures should be held to 40-43,000 for the military autos, I see no reason a modern bolt gun can't be run at 50,000 without problems. | |||
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