Originally Posted by ol mike
I have some 4831sc so i'll give it a whirl .
I haven't had any problem w/ imr powders pertaining to temp sensitivity -i use 4350 w/ 100gr nbt and it does great in all seasons.
7828 pops up a lot in my research -recon i can spring for a can ...quater tank of fuel ain't much.
I've heard vitv-560 is really good -big velocity and accuracy , but i've also read it's abrasive on throats.
VV N560 is getting good reviews from all I have heard that have used it. I can vouch for N160 and N165. VV gives VERY consistent velocities (low SDs). For your stated application, IF you're going to limit yourself to Hodgdon, you're going to limit yourself. IMO, H4831 is a good powder for 160s/162s, but there's better. 7828, could border on being a bit too slow...so slow you might run out of case before you hit max. Maybe not though. However, R-22 and N165 are about ideal burn rate for your application, and N560 would be too. With R-22 I've run 60grs with 160s in my .280Rem. Got right at 2990 in a 24" bbl. You ought to be able to run near 3100, or just under with 28" of bbl. The powders in the burn rate range of R-22 will serve you best IMO.