New Reloader, Huge Velocity Drop From a Change in Brass?

[jfk69]

No offense intended here - it's not just the long road, it's totally delusional. Once you understand the statistics, the method you are describing here is literally like having someone read your palm and tell you your fortune, drawing tarot cards, looking for faces in burnt toast, etc, etc. You are not LEARNING anything by doing testing with small groups, you are only reinforcing an incorrect understanding of statistics. I know because I wasted about 5 years and maybe 10k rounds of ammo doing it, before I realized I wasn't "tuning" shit.

You have to realize, you have accepted a very elaborate theory of accuracy and tuning as truth (nodes, small changes in powder, seating depth, groups at distance, etc) without disproving the much more simple explanation (random noise due to variations of small samples). Any time anyone takes time to disprove this null hypothesis, they come to the conclusions that I and @Harvey_NW have stated here.

Amen. The only thing the OP is doing is wasting components.

 

[SDHNTR]

Load to pressure, back off a grain or 1.5gr, shoot. Don’t like it, change the bullet once or twice. Still don’t like it, change the powder and try again. It’s either the bullet or the powder. It’s not a half grain charge or .010 seating depth that matters.

 

[steelheadmike]

Load to pressure, back off a grain or 1.5gr, shoot. Don’t like it, change the bullet once or twice. Still don’t like it, change the powder and try again. It’s either the bullet or the powder. It’s not a half grain charge or .010 seating depth that matters.

Preach!!


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