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joet
04-12-2015, 08:15
30471

Anyone use this gage?

joem
04-13-2015, 12:52
Never seen one like it. Not sure what the readings mean.

Johnny P
04-13-2015, 06:40
What is the smallest reading (hidden in the bore)?

Major Tom
04-14-2015, 05:03
I continue to wonder why muzzle/throat gages are so expensive when they are a simple machined gage?

joet
04-14-2015, 05:39
It is made by a company named squirrel daddy.30526

Ed Byrns
04-14-2015, 05:46
Nice progressive pin gauge.
.3025/.3020/.3015/.3010/.3005/.3000

Johnny P
04-14-2015, 06:04
Don't know about the M1 Rifle barrels, but the manufacturing tolerance of the 1903 Rifle bore was .2995 to .3015.

joem
04-14-2015, 06:27
I see now that it's laying out.

jjrothWA
04-16-2015, 07:30
Just use a M2 bullet, insert nose into muzzle, and if:
1/4" shows from muzzle crown to cannalure on bullet, minor wear,
3/16 or less, got about .004" wear,
less than 1/8" about .010"
if it swallows the cannalure [or the bullet], replace barrel.