Thread: 308 Twist rates v projectile weights ?

Originally Posted by mikee

Over all I really like it although reloading in hurry may be challenging.

One tip - yanking frantically on the trigger (instead of the guard lever) does not open the action, no matter how many times you do it...thankfully I learnt this playing at home and not while hunting!

Originally Posted by Cigar

One tip - yanking frantically on the trigger (instead of the guard lever) does not open the action, no matter how many times you do it...thankfully I learnt this playing at home and not while hunting!

Yes Yes a mate with a cellphone camera in a stressful situation with operators brainfart moment like you describe surely may end up somewhere like .................................................. .................................here !!

Looking at the factory (Winchester supersuppressed) ammo, 308 168gr and 300 BLK 200 gr are both rated at 1060 fps. Presumably, BLK typically have faster twist barrels and they've limited the bullet weight in the 308.

I wonder how much you can expect of the 308 subs ? They only claim 420 ft.lb at the muzzle. That's 4x the energy of a 22LR subsonic. Twice the energy of a 17HMR. It's not a 308 class cartridge made quiet; it's a rimfire class cartridge with a beefed up bullet.

Originally Posted by Bagheera

Looking at the factory (Winchester supersuppressed) ammo, 308 168gr and 300 BLK 200 gr are both rated at 1060 fps. Presumably, BLK typically have faster twist barrels and they've limited the bullet weight in the 308.

I wonder how much you can expect of the 308 subs ? They only claim 420 ft.lb at the muzzle. That's 4x the energy of a 22LR subsonic. Twice the energy of a 17HMR. It's not a 308 class cartridge made quiet; it's a rimfire class cartridge with a beefed up bullet.

short answer to that...sweet fark all
unless you hit dead on the central nervous system you will have a runner.even if you smack it through boiler room it will still run until bleeds out,which will be slower than normal...think bow hunting slowly.... you have next to zero shock on impact,a near miss of vitals is a near miss,no fragmentation or 2ndary bits of bone flying into important bits...but if your a deadeye dick and dial it correctly and shoot it head neck......Im not that good.

Running 30cal subsonics on body shot deer your better off with the purpose built subsonic projectile like Lehigh or Maker bullet. Unfortunately reloading is the road you can go in NZ as I don’t know anyone the stock factory ammo with these bullets.
A 450BM or 45/70 would be a better bet for factory subs in this country.