Glass bedding

woods · Member Joined: Oct 15, 2005 Posts: 89

Yeah, I have sorted the bullets by weight. This box varied by 1.6 gr

it has not seemed to make a difference although I do load a set of bullets as close to each other as possible.

What I have found makes a difference is the bearing surface. Oddly enough even though these bullets vary in weight they do not vary much in bearing surface.

The thing I have found is that the Accubonds are the worst in varying bearing surface if you mix them from different boxes. I have found as much as .020" difference in bearing surface on 180 and 200 gr 30 caliber Accubonds when taken from different boxes even when they weighed the same.

slimjim · Posted: Sun Feb 21, 2010 5:50 pm Post subject: Re: Glass bedding

woods wrote:

What I have found makes a difference is the bearing surface. Oddly enough even though these bullets vary in weight they do not vary much in bearing surface.

This is good to know. Bearing surface should have a direct relationship to the amount of internal friction a bullet sees in the barrel and friction will affect bullet velocity.