I have been using the 270 Win since 1973 and nothing beats IMR 4350 in the 270
Nothing ? Maybe in your rifle. Surplus 4831 Did/Does, yes I have a few #s.
Also IMR 7828 does
in several 270s I have and have had.
Now, I'm not saying that 4350 doesn't work NOR that it's not accurate.
I'm saying in my rifles S 4831 & 7828 beat 4350 in VELOCITY & accuracy combined.
YMMV
Jerry