Originally Posted by cartervj
Whats the difference between the 284 and 280? Know a guy with 280AI and it’s a tack driver


280 is based on a 30-06 case . 284 is on a 7.5X 55 case ( I think). It's a 7mm , .284 bullet. It's falls between a 7mm-08 and 280 . Very unique round .


https://en.wikipedia.org/wiki/.284_Winchester


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