04-28-2020, 09:21 PM
tdbru Wrote:i've found 3 that i like. H4895, Benchmark, and Pro Power Varmint. mostly because that's what i have on hand. H4895 is very temp stable. Benchmark is not too far behind and works well with the light bullets. PPV does give the velocity it promises. still need to play with more loads and bullets and see what turns out best. the Sierra manual seems to be the only bullet maker manual mentioning PPV much, and for some of the calibers i run, it really performs. it's not as temp stable, though, as the other two. if forced to pick just two...hmmm... that difficult. since i don't do a lot of very long range shooting, yet, with my Grendel, i'm leaning towards PPV for the speed.
-tdbru
Benchmark and 123 SST is around 2475 FPS from my Howa if my memory is correct. That was using just a hair over a book max load from Hornady, but below max from another source for the same bullet. I do plan on trying it with some 100gr Hornady bullets as well though. To me that seems to be close to the kind of velocity I should expect with that weight bullet in this cartridge. When things start to become normalish again I plan on buying an 8lb jug of Benchmark. I do want to try H4895 in the Grendel, but it is one of the powders I am playing with in my .243 right now. If it looks like a winner there, I may also look for an 8lb jug of that as well.