What velocity would you be getting in your .280 AI with 150 and 160s if you have chronographed them?
I'm getting 3050 with 150 Ballistic Tips and Scenars, using R-26 and I-7828.
For 160's the most accurate powder in my 2 rifles is H4831sc so that's what I'm using, It's on the slow end of the spectrum but shot placement is more important than velocity, so that's what I'm using. I'm getting just over 2,900 with 160's in both rifles.
If you look at the Nosler data, keep in mind that they use 26" barrels.
