My 308's love trailboss and titegroup with 168 grain eld m. Around 8 grains of titegroup or 10 grains of trailboss.
Also 170g cast bullets with 8 grains of IMR green.
All are around 1050 fps. Use for target and small game inside 100 yrds. Haven't tried them at longer distance.
I find Hodgdon's starting load for a 300 grain Sierra Gameking bullet using Staball 6.5 very accurate. 53 Ft Lbs recoil in a 7 pound rifle. They have load data for a 270 grain Hornady. I would try the Staball 6.5 or the IMR 4350.
My favorite for a jacketed bullet is 250 grain Sierra Gameking...
i have a 375 ruger that is light weight. It does hurt to shoot full power 300 grain bullet loads. I even put a small sand bag against my shoulder on the bench then.
However hand loading makes it a much more useful gun.
grouse/bunny/gallery- round ball and 5 grains bullseye
off hand practice...
I have seen people say that Magnum Primers are useful with Ball powders, esp. in cold weather. Would that be a thing with the new Winchester Staball powders?
The only powder I had go bad was from WW2. Surplus 4895. H335 from the same time worked okay.
I am currently shooting the last of a can of Dupont Pistol #6 in a 44 mag. Using Primers in wooden trays.
I saw the 195 grain 308 and wondered what cartridge they were making those for. At first I though they were the 190 bullets for subsonic.
a 134 grain 25 cal!
here is all of them
https://www.midwayusa.com/s?searchTerm=bullets%20seconds%20flat%20point