Lil gun burns significantly hotter when used near it's pressure peak.
With a full load of it under an RCBS 400gr SWC in the 480 Ruger SuperRed it would make the gun ring like a bell.
Spooky, though the primers didn't show any flattening, certainly no more than normal. Case expansion was the same as factory loads. As those are not always good indicators in pistol cartridges the prudent handloader in me said I'll back this down.
Dropped 1 grain and the ringing went away, and another half grain for good measure.
IIRC, the velocity of the top load was 1280 fps?
-1.5gr. yielded 1200-1225 fps
