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Old August 14, 2013, 07:13 AM   #1
cdoc42
Senior Member
 
Join Date: March 13, 2005
Location: Pennsylvania
Posts: 1,671
Speer Boron Nitride bullets

I bought a box of 120gr in .25 caliber for my .25-06 and they look pretty sleek, appearing long for caliber. But not much info on the box other than it being a method of bonding lead to jacket and that one needs to go to a Speer site for loading info that is specific for these bullets.

I worked up a few loads with IMR 7828, H4831 and H414 but the best 5-shot group I got was 1.118" at 100 yards, not even close to the sub 0.5" group I got with Hornady 120gr HP.

I also fired a few rounds with conventional copper jackets and when I cleaned the rifle I was surprised by the ease and absence of copper, but it may simply have been I didn't shoot enough copper-jacketed bullets.

I wonder if any of you have tried these; what do you think, and since copper seems to be out of the mix here (or is it?) how do we know the bore is really getting clean with conventional cleaning agents?
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