I regularly run handloads through my Tactical. My practice round is a 200 gr SWC from Lazercast over 4.5 gr of Bullseye. I ordinarily shoot 100 rounds per session (have to have time to shoot my other guns!), and I've not had a leading problem with the barrel. Even though the manual prohibits cast loads, I've experienced no problems. I do, however, clean the gun meticulously after every rangetrip. Good luck.