Thread: 284 win vs 280ai

Originally Posted by cameronjackwhite

Make it or break it time lads. I have a sako 75 long action and a 24" proof barrel in 7mm. I was dead set on a 284 build but my smith is pretty sure it wont feed and recommended 280ai. Is the barrel long enough? Thoughts appreciated.

Not sure why your gunsmith thinks the 284 won't feed well....it will.
For both the 284 and 280ai a 24" barrel is absolutely fine.
From memory (might pay to check), the 280ai holds about 5 grains more powder than the 284 and can give 100-150fps more velocity. Some consider that worthwhile....I don't due to the hassle of fireforming. Yeah fireforming is simple but I just find it an extra unnecessary step if the 284 is an option.
However saying that...based on the availability of brass alone, I would go with the 280ai as one can use 30/06, 25/06 and 270 cases if need be.
If 284 brass is available and priced right though, then I would stick with your initial idea of a 284 in the long action Sako (long throat reamer) as I just can't be assed with fire-forming.

As said, if you want a shorter barrel to accommodate a suppressor then 284 be the go. If running bare or braked then 280ai will have a performance edge