Ummm can you explain that?
In the 'medium'
(repeat 'medium') frame New Vaquero and the .45 convertible flattop, both the .45 Colt and .45 ACP can be used in those revolvers. Therefore we would set the max pressure for these revolvers to ACP levels (23,000psi) . NO, NOTTA, NO way, shall any Ruger Only Loads find their way into these medium framed revolvers. Only the 'large'
(repeat 'large') framed Blackhawk .45 Colt revolver and original Vaquero can handle the 30,000psi Ruger Only Loads which get you into Magnum territory. Talking Single Actions here as the (Super) Redhawks can also handle ROLs.
Hope that helps!
Here is an PDF of an article written by Brian Pearce that explains more about Tier 1, Tier 2, and Tier 3 loads (before the convertibles were released by Lipseys) :
is there anything I should know?
Go out and shoot it
. All you need to know
. You might find the SS sights a pain in the sunlight but that is all I can think of. Have fun!
Oh yeah, there is one thing. After shooting for a while and you just can't seem to get good groups and it may be leading.... Check the cylinder throats. Ruger is notorious for under sized throats. They should be .452 . In my original Vaquero, my groups went from 6" to 3" after I reamed them out. The New Vaqueros are said to be better so you might not need it. Just a heads up!