M1917 ideal bullet

[Wineman]

The original barrels were five groove, left hand twist. Replacement barrels from High Standard are four groove, right hand twist. The replacement barrels from Johnson Automatics were two groove, right hand twist. In my original barrel, I have found that a 0.3105 bullet from Hornady (Item #3131, meant for the 303 British) is very accurate. It is a Boat Tail 174 grain FMJ. I have also found that flat based 0.308 bullets shoot better than 0.308 Boat Tail bullets. The differences are small though and using a bullet that is larger diameter works for me and is not advice to use it yourself. Please work up any loads carefully, looking for pressure signs.

Dave