I load for 3 270s. When I started reloading H4831 was highly spoken of and has a long history with 270. So that’s where I started. No doubt h4831 works and I was pretty satisfied with h4831 until I tried h4350 in one on my 270s. With 130 grain bullets and h4350 I get better velocity and accuracy In all 3 of my 270s with h4350.