I was using Kevin's test. Most recommend 10 shot ladder. And a 10 shot followup to confirm. Satterlee is looking for small vert. deviation but I can't tell if it's me or load. I'm not sure you will find a flat fps spot unless over 80% fill - too many variables. Not saying don't bother, just insure what you do has value. Interesting to see Kevin's raw data. My 30/30 tests - first alloy failure ( 4 different bullets 5-6 each). Reduce loads, looks decent now increase 1/2 gr. and see results. No chrony. It's only 40% fill. Powder is good, try @ 100 and see target results. Chrony a good load to see trajectory. record and done. Load some more.
My 308W development - pick a good advertised mould (165A - thank you guys). 40gr 335 or 4895, powder coat ( not at first), 20 something BHN (HT my alloy). Load and shoot a bunch.
First result, ~50 yds, 30 something deg, prone with new bipod and freezing my gut. Works, been using the same since for LR308 carbine.
My 308W development - pick a good advertised mould (165A - thank you guys). 40gr 335 or 4895, powder coat ( not at first), 20 something BHN (HT my alloy). Load and shoot a bunch.
First result, ~50 yds, 30 something deg, prone with new bipod and freezing my gut. Works, been using the same since for LR308 carbine.
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