see I had always thought that glock barrels were hard cast bullet friendly.
I’ve heard they did fairly well with real hard cast, like Buffalo Bore loads
IIRC, Glock doesn’t recommend cast bullets.
DF
I saw several reports that the KKM barrels do not increase accuracy measurably, groups shot with std barrel and KKM don't vary in size measurably, however I am sure that someone will post a 5 inch group with a glock barrel and a 1 inch group with a KKM now that I make mention of it. I think several people here have shot a good bit of hard cast from a glock barrel, the hard cast does not seem to be a problem. .
