what? Throw out pulled powder? What do you use for fire forming brass? A 30/06 case full in my new 9.3x62 did a nice job of reforming brass to this caliber.
This will draw a bit of rancor.
When I fireform a case I just use a load that's as close as what I expect to shoot in the reformed case as I can get. It's always confused me why people do otherwise.
I've tried filling cases with powder and wax or cereal to bring up the pressures but it's never been very satisfactory IMHO.
When forming a case, I also wouldn't use powder I wasn't sure of. When powder goes bad to the point you can smell it, it will ruin your bore if it isn't cleaned properly, say in the same manner as surplus with corrosive primers.
John Y, It isn't a big deal one way or the other but Ganderite is correct. If you had mixed that pound of powder with the other pound you had on hand, you would have two pounds of powder with exactly the same character burn wise.
I have mixed "new manufacture H4831 with 75 year old 4831 surplus powder and checked them against unmixed powder from each type and the results were less than 1% different, or in Ganderite's measurement about a grain.
As Ganderite stated one of the biggest issues with old powder is when it's been allowed to DRY OUT. Even then, when you mix a pound of DRIED OUT powder with 9 pounds of fresh powder there isn't a noticeable difference that I've been able to detect.
I ran into this with a large lot of 3031 made in 1945. I picked it up cheap and the containers looked good. I put them into the powder magazine and promptly forgot about them as I had a container of IMR 3031 open and at the time it was my go to powder for 308 Win and 303 Brit. About five years later, I took one of the 25 pound, laminated paper containers off the shelf with the idea of splitting it in half and selling one half to a friend.
Being careful, I wanted to make sure all was well. It wasn't. The powder just wouldn't give velocities near the newer IMR 3031. I set it aside for later evaluation. I tried the other container, which had the same lot number and it performed just fine. I spit that container in half and sold that to my friend.
I looked at the other container and noticed a hole about the size of a dime on the bottom edge. Mouse/rat????? Something had chewed that hole. Likely done before I bought it at the auction and I just didn't notice it. Nothing had gotten inside the container and the powder had clumped together enough to stop leakage. That's the only difference. I did use up that powder as well as give it to people for shooting cast lead in centerfire rifle cartridges. It did get used and when used in the latter application, it was just fine.
Well I'm close to 70 and I've started selling off some of the powder lots I won't be using anymore to people that are local. I ended up with a bunch of powder from an estate recently and some of that will be at the Vernon Show later this month. Aug 24-25.
There comes a time in everyone's life when they realize it's now up to someone else to enjoy some of the things we accumulated when we thought we might live forever.
TURF THE LIBERALS IN 2019