Hi,
What does Ruger tell folks to shoot in that gun?
They've got the knowledge of what went into building the gun that nobody on the outside does. And they can make line changes, as they have in the past with other guns, which we can't see on the gun coming out of the box. For example, IF (BIG word) a Ruger NV from the early runs is actually capable of handling "overloads" at 150% of SAAMI spec--as a steady diet, not just one or two proof loads--we're talking roughly 21kpsi. So there's a big safety margin... makes sense to me from both a manufacturing and a product liability standpoint.
BUT, I look in my manual and what do they tell me again? Stick to SAAMI spec loads. "Bah, I know the gun's stronger than that," I tell myself. And I choose to shoot those "overloads" somebody who DOESN'T make the gun tells me are ok.
What I don't know is that just before MY gun was built, Ruger made a line change to the steel in the cylinder, and it now has a safety margin of only 125%. It's still perfectly safe with factory/SAAMI spec loads, exactly as they tell me it is in the manual. But how long will it take those hotter ones before damage of one kind or another occurs? Do Mr. Pearce or any other writers know exactly what it was and when they made that change, so they can advise us "Do not use these loads in guns with serial numbers higher than 123-xxxx" so we don't damage our guns or endanger ourselves? Maybe, but if so, I certainly missed the article!
I tried to "do the research" as it was when deciding what .4x revolver I wanted to buy some years back (before ANY Vaquero model was out.) Everything pointed me toward the .44 Mag as filling MY needs, as well as being purpose built for the higher pressure loads so many try to emulate with their .45 Colts. So far, that's proven a wise choice, meaning I don't have a dog in the fight, either. What others do is their business, but IF I figured at some time in the future I "need" a hot-rodded .45 instead of an "everyday" .44 Mag, the .454 Casull would tempt me far more than trying to outguess the guys who made the gun...
Stay safe guys.
Rick C