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9/22/2017 12:11:25 AM
Posted: 9/18/2005 4:58:39 PM EDT
ive got a colt factory upper a1 style with a 10.25 barrel and was wonderin what the twist was on those barrels it was made in 97 chrome lined, chrome chamber

also what bullet weights are you guys useing?
Link Posted: 9/18/2005 6:09:17 PM EDT
Typical COLT factory barrel, along with most of the other aftermarket vendors is 1x10.

My 9mm barrel is cut from a stainless blank, 8.5" long, and 1x10. I shoot what ever through it.

Common pistol barrel is 1x16, and we shooting 147's out of those, and subguns/carbines be 1x10, so 147gr-158gr be fine. Currently with having a subgun, to hold costs down of 9mm to feed the thing, I been sticking to 115gr bullets, and loading moderately.
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