Originally Posted by
poppy42
First off HP-38 and win 231 are the exact same powder. The only difference is the container they put it in at the manufacturing plant. They come out of the exact same vat! I use both, which ever one I can get. I use them in 9 mm 38 special and 9 x 18 Makarov. As for unique it is literally one of the oldest smokeless powder’s. If I could only get one powder ever it would be unique! In my opinion it is the most versatile powder there is! You can use it for shotguns, pistols, and rifles. I have used it extensively in all the above mentioned calipers in addition to loading it in 30-06. There are many many many more calibers that it’s applicable to. Hope this helps