My Ruger #1B shot great for many years. .243 win ....bought used.
Was sub .5 at 100 w handloads.
Eventually groups got close to an inch.
Heard it might be copper build up.
Buddy had the special solvent
It removed just a slight bit. My reg cleaning had it pretty good. Turns out the throat had eroded.
Rather than try heavier bullets.....since it was a varminter.....it went bye bye ( w full disclosure ). If i had the funds then id have had it rebarrelled.
Was sub .5 at 100 w handloads.
Eventually groups got close to an inch.
Heard it might be copper build up.
Buddy had the special solvent
It removed just a slight bit. My reg cleaning had it pretty good. Turns out the throat had eroded.
Rather than try heavier bullets.....since it was a varminter.....it went bye bye ( w full disclosure ). If i had the funds then id have had it rebarrelled.