Index Home About Blog
From: bartb@fc.hp.com (Bart Bobbitt)
Subject: Re: 6.5x55 reloads
Organization: Hewlett-Packard Fort Collins Site

Clark Towle Gunsmith (towle%gunner.dnet.dec.com@nntpd.lkg.dec.com) wrote:

: For the best accuracy.........for jacketed size them to bore diameter.

I think he's referring to groove diameter, not bore.

Interestingly enough, the most accurate rifles shoot jacketed bullets
whose diameter is larger than groove diameter by several ten-thousandths
to as much as two-thousandths of an inch.  My latest Palma rifle's
barrel's groove diameter is .3064-in.  Those Sierra .308 Palma bullets
I have mic at .3084-in.  1000-yard test groups are in the 5 to 6 inch
range.

BB


Index Home About Blog