Deleted
Deleted Member
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Post by Deleted on Dec 1, 2012 18:40:21 GMT -8
I have been thinking what to try next. I have a few ideas, but would like to hear some of things you people are thinking about.
This is a good place to get some information on what the shooters want. Again this is not for requests, just ideas. Just keep them Practical.
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40rod
Junior Member
Posts: 15
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Post by 40rod on Dec 1, 2012 21:21:01 GMT -8
How is this for the next contender in the .30cal AR arms race?
7.62x39 improved Pros; * can use standard 7.62x39 ammo for fire-forming or cheap practice *larger case capacity-more power * fatter case might feed better * Wildcat round will not fit in standard chamber so that high pressure reloads will not fit old guns
Cons: *may need 2 different magazines for standard and improved rounds. * fatter improved chamber might cause steel case ammo to split worse than it already does.
Try to imagine a cross between a 7.62x39 and the old 1886 french lebel round (with its curved belly) having just enough Ackley shoulder to headspace right.
The trick will be to balance it so that the case sidewall is straight enough to feed from an AR magwell but not blowing the shoulder out enough to split cases.
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Post by GLSHOOTER on Dec 2, 2012 15:32:30 GMT -8
How is this for the next contender in the .30cal AR arms race? 7.62x39 improved Pros; * can use standard 7.62x39 ammo for fire-forming or cheap practice *larger case capacity-more power * fatter case might feed better * Wildcat round will not fit in standard chamber so that high pressure reloads will not fit old guns Cons: *may need 2 different magazines for standard and improved rounds. * fatter improved chamber might cause steel case ammo to split worse than it already does. Try to imagine a cross between a 7.62x39 and the old 1886 french lebel round (with its curved belly) having just enough Ackley shoulder to headspace right. The trick will be to balance it so that the case sidewall is straight enough to feed from an AR magwell but not blowing the shoulder out enough to split cases.[/quote Basically the 30 Major that the AMU has shot at 3 Gun matches. A 6.5 Grendel/LBC necked up to 30 caliber. Good brass, and runs in all our magazines now. No special dies. I would NEVER shoot anything that I anticipated that the round MIGHT split. I've seen way to may magazines etc. go away from case head separations etc. Greg
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Post by gunmutt on Dec 2, 2012 16:27:35 GMT -8
7 LBC ;D
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Post by GLSHOOTER on Dec 2, 2012 16:42:47 GMT -8
And that would be better because................................ Greg
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Deleted
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Post by Deleted on Dec 2, 2012 19:17:49 GMT -8
My personal choice would be a 6.8 case opened up to 35 cal. It would be able to shoot 110 gr pistol bullets up to 250 gr rifle bullets.
What do you think?
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Post by biggdawg on Dec 2, 2012 19:53:24 GMT -8
My personal choice would be a 6.8 case opened up to 35 cal. It would be able to shoot 110 gr pistol bullets up to 250 gr rifle bullets. What do you think? I like the sound of that ;D
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Post by GLSHOOTER on Dec 2, 2012 20:38:09 GMT -8
My personal choice would be a 6.8 case opened up to 35 cal. It would be able to shoot 110 gr pistol bullets up to 250 gr rifle bullets. What do you think? That would make it legal in some states for deer and be a thumper. Greg
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Post by gunmutt on Dec 2, 2012 23:24:10 GMT -8
Well a 7lbc or 7ARk is perfect for these southeastern whitetail. Here we have hilly terrain. Thick brush. Hardwood forest. And small pastures. Most shots are less than 200 yards and some are in the 400-500 range. Substantial knockdown is needed many farmers don't want you to track a kill into there property plus try dragging a big buck through heavy brush. Plus the 7 LBC is not a long range caliber. With heavy population growth residential areas are popping up all over the place. The 6mm is too small and not needed except for paper. No PDogs around here. This is 30-06 and .270 territory around here but many want to get into and AR platform. Its easy to handle in a tree stand
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Post by gunmutt on Dec 3, 2012 1:26:43 GMT -8
A 110 TNT at around 3000 fps out of a 20" barrel. 7lbc needs to come to life at BHW
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Post by biggdawg on Dec 3, 2012 4:01:45 GMT -8
7lbc also sounds great i have seen the 7 ark and would like something in that range.
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Deleted
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Post by Deleted on Dec 3, 2012 7:23:58 GMT -8
Well a 7lbc or 7ARk is perfect for these southeastern whitetail. Here we have hilly terrain. Thick brush. Hardwood forest. And small pastures. Most shots are less than 200 yards and some are in the 400-500 range. Substantial knockdown is needed many farmers don't want you to track a kill into there property plus try dragging a big buck through heavy brush. Plus the 7 LBC is not a long range caliber. With heavy population growth residential areas are popping up all over the place. The 6mm is too small and not needed except for paper. No PDogs around here. This is 30-06 and .270 territory around here but many want to get into and AR platform. Its easy to handle in a tree stand This may be a good choice, but what does it do better than the 6.5 LBC?
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Post by gunmutt on Dec 3, 2012 16:11:05 GMT -8
Well the 6.5 LBC is built for long range accuracy and the 7 LBC would be more suited for Medium range power. I think of it kind of like a 30-30 to a .308. With the bullet designs of today the 7mm is a perfect mid range caliber between a 5.56 and a 7.62. A .30 caliber LBC is also a good concept but it would be hard to achieve a descent velocity with that size of a projectile in a small case. That would be kinda like a 300 BLK on steroids.
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Deleted
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Post by Deleted on Dec 3, 2012 17:22:47 GMT -8
Actually the 30 cal with a 110 bullet will be faster than the 7mm. I really can't see a reason to not use an existing cartridge because it is efficient. ( 6.5 LBC ) I also would not spend money on a reamer knowing the intended purpose was to use a varmint bullet on a big game animal. That style of bullet is to unpredictable in terms of expansion or explosion.
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Post by gunmutt on Dec 3, 2012 17:44:22 GMT -8
So your saying a 6.5 LBC fits the bill in an 18" 50-400 yard range whitetail thumper in heavy brush. Note this round needs to drop a big buck in wooded areas and small pastures and not travel into surrounding areas.
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