RE: Rem. copper solids
We have two dedicated slug guns, both H&R Ultras. Mine is a 12 Deluxe and my son's a 20 standard.
The 20 absolutely loves the Copper Solids and is a real tack driver, pleasure to shoot.
My 12 doesn't do too well with them though. It drives the tacks with Brenekke Gold Magnums. "Rather large" flame discharge from the Gold Mags, too. It was rather chilly when we were out shooting last and with each shot I could feel a real heat blast come back over my face.
Uncle Matt (in IL)