Yeah, I got it for .308s but ran out of N140 and wasn't shooting much .308 so I figured I'd give N150 a go in my .223 bolt (26") and get great results, 24.7 gives me 2950 with 75s and <1/2moa. Just hammers. Might be too slow at 2.260 in an 18" barrel though, I dunno. I'll try and report back.