stamp on m-1d barrel from numrich

[goo]

can anybody tell me what it means?

domestic, foreign, comments on quality?

thx,

goo

31853

31854

long, long ago :(
31855

[gwp]

Best guess.

CBI - Criterion Barrels Inc
6535448 - M1 barrel drawing number
1-10 - Twist rate
12-10 - Manufacture date
37 - some type of identification

[goo]

thx. gwp

is a 1-10 twist rate standard?

[Twinson]

yep, for M1 anyway..

[goo]

anything special to know about breaking in a new barrel?

i don't suppose they did anything special during the big one.

[Crispy]

Goo,
I've installed two new Criterion standard M1 barrels.
All I did was swab them out with Hoppe's after each range session like I would any barrel.
They had me a little scared at first, not holding black at 200 yards, but after about 75 rounds they really settled in and are equal to or even better than a GI barrel.
Hope this helps.
Chris.

[goo]

thank you much, crispy.