eLightfoot
WKR
Seems like you would pressure out way early trying to burn that much h4350 through a 1/4” barrel. 7mm, sure that’s a big fat hole.Sure why not? My current load in my saum is not H4350 but it’s a very usable powder for the saum case, especially in a short bbl. Do a little research on the 7 saum and F class shooters. H4350 is probably the most popular powder for the 7 saum amongst F class shooters because of its ability hold super low ES and SD’s. Is it going to produce the max velocities in a 25 saum? Absolutely not, there are better powder suitable for max velocity such as RL26, N565, and H1K. But to say it’s not probable to achieve the velocities @Redbeard88 is wanting is simply not true. It’s been tested by me in 2 different 25 saums as well as 2 25 SST’s so a total of 4 different bbls but all 20” long.