The 280 AI was developed by Parker Otto (P.O.) Ackley. P.O. was a lot like Roy Weatherby, a wildcatter who was in search of better solutions. His 280 AI set out to improve the .280 Rem by steeping the shoulder to 40 degrees to increase power capacity.
It was then registered by SAAMI in 2007 by Nosler and has been an underserved cartridge in the market.
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