jason41987
member
- Joined
- Apr 10, 2012
- Messages
- 1,293
hey everyone.. im looking to convert all my and future military semi automatics if intermediate caliber to a single cartridge... and im trying to decide what that is... ive been wanting 6.8mm SPC, but... some comments ive received leads me to question what would be the absolute best choice... what would offer me the best performance in these rifles as far as reliability, power, and availability?...
as for availability, i dont necessarily need to be able to find factory ammo in this cartridge, but atleast be able to reshape common brass for loading ammo... so i guess even wildcats are up for debate, so long as i can get dies to reshape the brass with, and someone to make the barrels
so. restrictions... i would say nothing larger than a .270 caliber, because the BC in AK/AR and similar size actions wouldnt be enough to give better performance outside of close range.. anything smaller than .270 caliber should have suitable ballistics coefficiencies...
overall length, with modification i believe the longest an AR15 is capable of handling is about 2.300"
so, those are the limits.. thats the absolute maximum as to what id try fitting into a magazine, and the largest bullet diameter im willing to go
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other criteria is it would need to have a good bullet selection for reloads, and something i can use common twist and groove barrels for.. so something that doesnt require specialty grooves or twist rates to perform well... having a rim diameter that fits a pre-existing bolt is a plus, but anything a .223/5.56 bolt can typically be machined to is ok
so... of all cartridges out there, pre-existing wildcats included as well as ideas for new wildcats that may offer a better for for this criteria is good as well... if you were going to chamber all of your "assault rifles" to one cartridge, what would you pick?
as for availability, i dont necessarily need to be able to find factory ammo in this cartridge, but atleast be able to reshape common brass for loading ammo... so i guess even wildcats are up for debate, so long as i can get dies to reshape the brass with, and someone to make the barrels
so. restrictions... i would say nothing larger than a .270 caliber, because the BC in AK/AR and similar size actions wouldnt be enough to give better performance outside of close range.. anything smaller than .270 caliber should have suitable ballistics coefficiencies...
overall length, with modification i believe the longest an AR15 is capable of handling is about 2.300"
so, those are the limits.. thats the absolute maximum as to what id try fitting into a magazine, and the largest bullet diameter im willing to go
----
other criteria is it would need to have a good bullet selection for reloads, and something i can use common twist and groove barrels for.. so something that doesnt require specialty grooves or twist rates to perform well... having a rim diameter that fits a pre-existing bolt is a plus, but anything a .223/5.56 bolt can typically be machined to is ok
so... of all cartridges out there, pre-existing wildcats included as well as ideas for new wildcats that may offer a better for for this criteria is good as well... if you were going to chamber all of your "assault rifles" to one cartridge, what would you pick?