First be sure that your powder is still usable as it is getting a bit old and may have deteriated if stored improperly.
Then try Hogdon's Website which shows loads for H4831 or H4831 SC which supposedly is the same but measures a bit better.
Some of us on this site are of the opinion that surplus 4831 might be a bit slower that new H4831 thus allowing greater charges. At least that's what we experienced back in the sixties when loading 25-06's. Our charges then were above todays recommended maximum loads.
Be safe however, and start with Hogdon's suggested starting loads and work up from there.
Presuming it is the same 4831 sold years ago by Hodgdon in the black and red can, it may be the best .270 Winchester powder ever made. Fifty-nine grains of my carefully hoarded stock still pushes a Nosler 130 Partition to 3147 average velocity from a 22" Ruger 77 barrel. O'Connor loaded it up to 60 grains, if memory serves, but I find 59 to be max in my rifle, worked up to carefully, of course. I don't use it in other calibers because there are powders just as good or better today. But nothing seems to match it in the .270.
[ 09-18-2002, 16:50: Message edited by: KLN ]
Posts: 283 | Location: Florida | Registered: 12 August 2001
Purchased 100lbs of 4831 in 1959 and have shot it in lots of rifles, with the 270 I also shoot 59 grains behind 130 and it has worked well with different rifles. Also the .243,.25-06,.30-06,7MM Mag and others. Paid $.40 a pound and have about 15 pounds left. Don't see any difference in loads from then to now. Load data hasn't changed much, hard to over load 4831!
Okay great. I have access to barrels of this stuff at nearly free prices. I will use the H4831 data for this stuff. I was told it had a shelf life of 120 years.
reload do you have any data particular data on 7MM Rem Mag that you loaded?
Difranco, I really envy you!! I bought 8 pounds of old mil H4831 in 1968, and just used the last of it about 2 years ago!! Had several good loads using it that I have not been able to duplicate with any currently marketed canister powder!
I purchased a 150 lb. stainless steel drum crated in wood (army surplus cannon powder) of that stuff about 10 years ago and its still good today..It's the stuff O'Conner used in the 270 and it still beats anything else...I load 62 grs under a 130 gr. bullet and get near 3200 FPS..I load 58 grs of the new stuff and thats a full case.
Posts: 42433 | Location: Twin Falls, Idaho | Registered: 04 June 2000
I also ran out of my last 10 lbs recently,best I`ve found for 140gr. bullets in my 6.5 swede(on a 98 action,not 96)won`t go for details as loads were a little stiff but sub moa was common.Want to sell a few lbs?if so e-mail me direct.