Good morning
+1 on loading round ball in any caliber for any firearm.. some autos may not feed well though. With just a small amount of fast shotgun powders up to Unique in large rifle cases you can have alot of fun cheap shooting. Plus a 40-1 cast round ball moving at just 700 fps will make a nasty would channel on whatever it hits. Slow it down to 500 fps and it still puts a heavy thump on garden raiders from a long barrel and most neighbors will never be disturbed.
Mike in Peru