H-4831....I have more luck with this powder in more cartridges than in any other..
Ken, have a friend not the best on reloading was loading his girl friends 280 with the 139 and having trouble horizintal strung using imr 4350. Have any data? i tought of giving him some R-22 for a try but strung that way to me sounds like bullet may not work in that gun.
Im not really sure my friend is not the best at reloading and fine tuning plus we live 35 miles away but i want to help him out. Shooting and loading is my hobby i like the challenge at times to take something like this and tweek to a fine rifle. But sometimes its hard to explain, proper barrel cleaning, seating depth, proper case prep, correct powder of what gun likes, etc. And most of all toss that darn manual of what is supposed to be the accurate load. Then you know everyone is a sharpshooter especially shooting off the hood of there trucks. My friend isnt that bad but i think you know where im coming from.