You can fire factory 280's in an AI, but the velocity will be lower than fireing them in an std. 280 chamber....

As for AI's not needing trimming as much, maybe so but i don't find the Rem. 280 to have stretching problems to begin with. I just don't consider this an issue at all.

Sure a 30-30 when AI'd does get a big velocity gain, but most AI chambers just don't gain that much if you keep the chamber pressure as it was in the factory cartridge... The AI'd 30-30 casegets aHUGE case capacityincrease, the 280 doesn't.

I honestly don't think it's worth the trouble, not to mention it kills the resale value of the rifle...

DM