Only time I ever broke a jag was with the .45 Encore barrel and the .45 extended jag. Mine only liked 225 powerbelts and I didn't want to shoot sabot/.40 cal. so I sold it and bought a White Super 91 in .451, now I can load big 460 gr. conicals with ease and actually hit the target with them....not so with the Encore .45!! :eek: