as another has said, measure case head thickness and weigh every round, then sort into lots. Determine which lot is most accurate. Use wind flags. Goodluck!
I'm one that is in your corner, and will laugh at all the nay sayers when you do this.
You've got me preparing to try your challenge myself this weekend.
I don't have the right base, so I'm still scratching my head as to how to get enough elevation. I may have a base that I can gunsmith on a little and make it work.
I think this will be great practice for reading wind, and a lot cheaper than big bores at a thousand.
Heat waves are horrible right now, right, left, right, left, it's either too hot (97) or the wind howls.
Nine,,a 39 dollar 20 moa base to do 300 plus,,,im thinking about taking the shots on my birthday(weather permitting)...figure maybe its good ju-ju,,5 shot group,,on the day i turn 41.