If you do subs in a Shorty 308 gas gun, dont go super slow stay above 1250 to 1350. You want to stay within the ability of the dwell time.

8208xbr, aa2520, powders like those will give you the best speeds for mid range bullets, varget for above 168 prob.

Frank Greene noted that 3 different chambers were used by the military on the 300 WinMag rifles (each differed from SAMMI spec). Here’s my random question regarding the freebore on Mk 13 chambers. When Crane went from the Mk 248 Mod 0 chamber (190 grain SMK) to the Mk 248 Mod 1 chamber (220 grain SMK), did they change the free bore spec?

-I think the A191 chamber (circa 1993-94?) has a .108" freebore, but maybe the later chambers had a longer freebore? Did the freebore spec change over time? (PT&G offers different reamers). I know the Mk 248 Mod 1 ammo is too hot, but was curious if the freebore changed when they adopted the 220 SMK bullets (circa 2009):

bump

Here is a thought. What platform are you using to stabilize your rifle? When testing for accuracy you need to remove as many outside variables as you can to get a true reading. Are you laying prone? What are you using to hold your rifles foreend? What about the stock? Are you sitting in a chair with it on a tripod?

Let me just throw this out. If you want a shorty ar10 that packs a punch. Swap your barrel out for a 358 Winchester barrel. Brass, bolt, everything is the same. It is just a 308 necked up to .358 but it packs one helluva punch at short to medium range. It can be loaded to be considerably more powerful than 308 and .358 projectiles can be had pretty cheap.

Hit the target 3 times? Average the readings?

For the 419 case too?

Darayavaus said:

the Pentateuch or torah are known as the books of moses because, as the name suggests, they were codified from earlier shorter scrolls or oral traditions. As such, compiled around 1400 BC, they were not, in their complete form, the oldest text. The oldest is Job. The Book of Job predates (does not mention) the Abrahamic Covenant, and it most likely dates from the immediate post-diluvian epoch. It also contains "lost words" which had gone out of usage before the time of Moses, and describes dinosaurs, which I'm sure some people in here will have fun with.

Click to expand...

That stuff interest me. I also like Wes Huff’s on multiple theology and history’s.

Timmy = .308