Worth mentioning, I think, would be to work up in very small increments as you fine tune your loads. The accuracy node can be there and gone within a tenth or two tenths of a grain sometimes. It seems the smaller the cartridge, the more this applies.
On the other hand, now and then you can do a workup in .3 increments spanning a little over a full grain and not notice any difference in group size and have great groups. Go figure. Hopefully you'll get lucky and stumble onto one of those right away.
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