maxscm
Gold $$ Contributor
I just picked a used Rem 40xBR for the single shot action for a future build. Have no history on it. I decided to shoot it some to see what it'll do.
The barrel is stamped .266 neck 6BR. Appears to be a Remington Barrel by the stampings. Maybe a 12-14 twist.
Does that mean my brass necks should measure .264-.265 loaded?
I preped 5 rds Lapua Brass and loaded them necks measured .265 loaded. Chambered well.
Fired them. The necks measure .271 fired and rechambered nice and snug as a fired round.
Now,,,,do i have a .266 neck? or ?
why do the fired necks measure .271?
The barrel is stamped .266 neck 6BR. Appears to be a Remington Barrel by the stampings. Maybe a 12-14 twist.
Does that mean my brass necks should measure .264-.265 loaded?
I preped 5 rds Lapua Brass and loaded them necks measured .265 loaded. Chambered well.
Fired them. The necks measure .271 fired and rechambered nice and snug as a fired round.
Now,,,,do i have a .266 neck? or ?
why do the fired necks measure .271?