Originally Posted by
zx10mike
so when you do your load development you do 5 to 10 shots each powder charge and then 5 to ten shots each seat depth ? 3 shot groups are fine to scan for optimum powder charge and seat depth. then when you find those nodes fine tune with 5 shots.
nope but the OP isnt asking for that though is he ? he has a group that isnt a group, he has no idea if it is representative or if he or the rifle is the problem,
I use 3 shot groups to check speed and for pressure signs, and as a quick zero check before heading out, but if you want to know if a load is good enough to bother with dithering about with length you need to fire at least 7 rounds to get a good average dispersion.
start at the basics, set to mag length, chose a starting powder charge, work that up in 3 shot stages (group size is irrelevent at this point) until you get the speed you want or pressure signs, then shoot some 7 shot groups, using those to fine tune your powder charge, once you are happy with that if you wish you can start playing with length, this is pretty much what you were saying anyway
Last edited by kennyc; 22-09-2018 at 05:07 PM.
Reason: removed part that was for another thread D'oh!
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