Not sure about H110 from 1976, but H110 and Win.296 are one in the same just different lables.I have some powders I have had for 30+ years and are still good. Bought a can of H110 at Walmart in 1976 (back then the price tag had the date printed on it ). I loaded some .357 mag loads and used about 1/4 can. then decided I liked Winchester 296 better. A few months ago a buddy wanted me to load some 41 mag for him , just some mid range plinking loads . I pulled the H110 down wiped the dust off, opened opened the can , looks good , smells good . Loaded a couple hundred (all the brass he had ) fired off a few . Works great .
Like said above if you keep it cool and dry and a closed container it should be fine but smell it first should not have a bitter or acid smell ..
Load a few up and give them a try, long as the powder hasn't discolored or not looking right it will work just fine, my kid buys old WWII surplus rounds for one of his old guns and they all fire.I'm glad to read this. I knew it had a long shelf life but wasn't sure how long. I have allot of old powder that has to be over 30 years old. Thanks for the info.
I was shooting 45 ACP reloads a couple weeks ago in my SR1911 I loaded in 1989.They shot like I had just loaded them.
That's what I plan on doing. I haven't reloaded in years. I loaded allot of reloads years ago then didn't have a place to shoot until recently.ThanksLoad a few up and give them a try, long as the powder hasn't discolored or not looking right it will work just fine, my kid buys old WWII surplus rounds for one of his old guns and they all fire.