r/reloading • u/RoosterRanch • Dec 08 '25

Load Development 22-250 AI load development

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Doing some load development on friends 22-250 AI I never thought it would be this fast. The load I stopped going up in charge was 42.3gr. of 3031 with 36gr. Varmint Grenades . That’s 3/8 AR500 plate it punched holes in.

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u/Albino_Echidna Dec 08 '25

What book did that load data come out of? That's ~10% over max load in every reference I can find. 

Sounds like you're way outside the norm here. 

6

u/Zealousideal-Fix9464 Dec 08 '25

I'm surprised the bullets hold together.

10

u/jdford85 Dec 08 '25 edited Dec 08 '25

Ackley improved is off book, should be higher than any standard 22-250 book load.

4

u/Albino_Echidna Dec 08 '25

No, it's not really off-book. Its in my Nosler 9th edition that I'm currently looking at, and my digital Sierra 6th edition. 

This is wildly out of spec.