I want to give a bore rider a try in my 7 BR. Any suggestions, comments or concerns.
I'm looking at a gas check design and have slugged the barrel.
Dimensions are: .2837" groove diameter and .2754" land diameter w/1:11" twist
135gr
Is bearing length good or bad for accuracy and velocity?
Should the nose be a certain ratio to the amount of bullet inside the case? I'm looking at more nose/front band length to compensate for freebore...
Should the base for the gas check be kept to a minimum or does it matter?
Using Dan's mold design software I have some nice looking combinations, but I'm still new to some of the terminology and its effects on accuracy.