l don't know how much difference an extra inch and a half makes in a 460. But l can say my 10 1/2'' PC is a real fire breather. The 2 times l have fired it in public got everybody's attention very quickly. The first such incident came at an indoor range. Firing the first couple rds of Hornady 200gr factory load caused the whole line to go silent. The next time was outdoors at a monthly IHMSA silh match. l got a similar response as the indoor range. The most amazing aspect of this big revolver was the way it made those 55 pound steel rams jump off the rail at 200 Meters. Never have l seen them actually LEAP in the air before.
l have since learned to enjoy less than MAX loads in this gun..My Speer manual has some quite adequate reduced loads in the 1500-1600fps range. l see the SW460 like the new 700HP Charger HellCat..l don't need all that horsepower to have fun...But lt is nice to know its there
My 12" is ungodly loud indoors, I can't imagine the elevated blast of the compensated versions ! Over the weekend I loaded up some mild 255 gr hard cast SWC's using 13 gr of WST powder and wow what a difference very mild recoil . One quick conclusion, hard cast bullets make a huge mess of my pistol. I think I might go to plated RNFP's to keep the mess to a minimum.