Originally Posted by
super_hunt54
Guys, Ruger itself recommends a barrel change if you are ramping a 45lc up to 454c because of the metal makeup of the barrel. Yes yes I know The pressure is primarily in the chamber of a revolver but if Ruger says you might oughtta do it, then I think I'm going to listen to them. Same thing goes for the cylinder, different metal content that isn't near rated for the pressures of the .454c. Not to mention the amount of meat you are taking from the cylinder walls anyway.
Could you reference their recommendation for barrel change? That is contrary to their "advice" in the late 1990's when I had a 45Colt SBH converted to 454C, and is different than the advice they gave when I had a 480R converted to 475Linebaugh.
The cylinder is well known to be Carpenter steel for the 454's, but I've yet to ever hear anything more than conjecture about barrels. Guys have been doing conversion cylinders on them for a long time without problem also - so under Ruger's advice or not, it works.