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unspellable · 09-10-2002, 05:10 PM

Before you guys start squeezing bullets, measure the bore. The DWM 7.65 mm barrel factory specs for the groove diameter is:

Minumum: 7.87 mm or 0.309843 inch
Nominal: 7.90 mm or 0.311024 inch
Maximum: 7.91 mm or 0.311417 inch

I've been collecting measurements and so far they run pretty true to DWM factory specs. This includes barrels in Rugers, Colts, etc.

It AIN'T supposed to take a 0.308 bullet!! For a nominal bore it should be a 0.311 inch bullet.

09-10-2002, 05:10 PM	#4
unspellable User Join Date: Jun 2002 Location: Iowa Posts: 768 Thanks: 0 Thanked 19 Times in 11 Posts	Before you guys start squeezing bullets, measure the bore. The DWM 7.65 mm barrel factory specs for the groove diameter is: Minumum: 7.87 mm or 0.309843 inch Nominal: 7.90 mm or 0.311024 inch Maximum: 7.91 mm or 0.311417 inch I've been collecting measurements and so far they run pretty true to DWM factory specs. This includes barrels in Rugers, Colts, etc. It AIN'T supposed to take a 0.308 bullet!! For a nominal bore it should be a 0.311 inch bullet.