Quote:
Originally Posted by 260 Rem
Don’t know if my experience with load development has much value to anybody else, but here is what I have come to believe.
First, unless one is really good at “measuring” and has good instruments, avoid flirting with seating at the lands. Generally, seating .010” jump or .010 jamb will put you you cleanly “out” or “in”. (Having one round a little off, and the next one a little in can result in unpredicable pressure variations...best to be firmly “out” or firmly “in”.)
Second, there is a much better chance of misleading information comming from 3 shot groups than from those containing 5 shots.
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I was taught to always shoot 5 shot groups