I have not hand loaded much for rifles but I have started latley. For hunting I got by with the factory rounds.

I did buy dies for my 30-06 and a can (really a metal can) of IMR 4350 back around 1980. I used a little and put it away. Here in Colorado with almost zero humidity and in my cool basement I believe it is still ok. Now for my question. Is IMR 4350 interchangeable with H4350? I have found you sure go through a can of powder alot faster for rifle ammo then for handgun. That old can of IMR 4350 is almost empty.

Thanks
Art