Watching this thread intently - Having said those powders work fine, have you tried jacketed proj with these powders at all? Is leading a thing with using boolits in barrels needing scrubbing before returning to jacketed proj use? Hence my reluctance to use for subsonic use...
Thanks RW !
Ask your self this question do you get leading in your .22RF?
The 151HP has a gas check which scrapes the bore clean they can handle 1800f, If there is any leading it will be from the copper fouling tearing up the bullet,
All you need to do for cleaning is swab the barrel out with a good bore Solvent and a few patches just like a .22RF
Lots of old shotgunners around Hamilton, so also keep your eye out for ICI Nobel 78 Shotgun Powder. I've used it a lot in place of Red Dot, AP70N etc. Lovely bulky powder. It is slightly faster than AS30N. Nobel never published data for Pistol loads with N78 so unlike the others mentioned in the thread, its not known for this usage. I used Red Dot load data to work up my loads in Pistol calibres with the start and max both a tad lower. Like all of them it can peak the pressure very quickly. I treat 13 gn in a 30 cal case (cf the original "The Load" of 13gn Red Dot), as very much a max load.
Have fun.
I know a lot but it seems less every day...
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