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tangolima · April 27, 2024, 10:49 AM

What's the expected weight variation of non-match grade varmint bullets?

I bought 400 6mm varmint bullets at 18 cents a round. Speer 100gr spbt. Out of curiosity I weighted 20 random samples and got mean 99.93gr stdev 0.20gr. So I expected 99.93+/-0.6 gr, or +/-0.6%. Not too bad I suppose.

I went ahead and sorted the bullets into 3 buckets; <99.73gr (~30%), 99.73-100.13gr(~50%), >100.13gr(~20%). Down the road, I will do running sort as I load for all calibers, either 2 buckets(3 sigmas each) or 3 buckets (2 sigmas each) depending on number of bullets I have. Hopefully it will tighten things a bit more. Will see.

-TL

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April 27, 2024, 10:49 AM	#1
tangolima Senior Member Join Date: September 28, 2013 Posts: 3,933	Bullet weight variations What's the expected weight variation of non-match grade varmint bullets? I bought 400 6mm varmint bullets at 18 cents a round. Speer 100gr spbt. Out of curiosity I weighted 20 random samples and got mean 99.93gr stdev 0.20gr. So I expected 99.93+/-0.6 gr, or +/-0.6%. Not too bad I suppose. I went ahead and sorted the bullets into 3 buckets; <99.73gr (~30%), 99.73-100.13gr(~50%), >100.13gr(~20%). Down the road, I will do running sort as I load for all calibers, either 2 buckets(3 sigmas each) or 3 buckets (2 sigmas each) depending on number of bullets I have. Hopefully it will tighten things a bit more. Will see. -TL Sent from my SM-N960U using Tapatalk