All 45LC Ruger single actions built after 1973 are built on the same large "44Magnum-class" basic frame, and all are equally strong.
The one exception is the New Vaquero, built on a "357 class" mid-frame and not compatible with the big 45LC+P boomers.
Once the frame and cylinder is there, think of these guns as having various "options":
* "Vaquero" means fixed-sights and more "cowboy looking" overall.
* "Bisley" means it has a longer, different-shaped grip frame with a reputation for good recoil control unless your hands are on the small side. This grip frame always ships from Ruger with a lower-slung hammer and a more curved trigger. Bisley grip frames were never made of aluminum.
* "Hunter" means a heavier, ribbed barrel.
* "Blackhawk" on it's own means the basic model; if it's a plain "Blackhawk" in blue, the grip frame is likely anodized aluminum.
* "Super Blackhawk" means it's most likely a 44Mag (there are exceptions!), the grip frame is always steel, the hammer is lower than standard (still higher than a Bisley hammer) and IF the barrel length is greater than 5.5", the grip frame will be a larger size "plowhandle" type.
From there, various factory models mix and match these features. A "Bisley Vaquero" means just what you'd think: Bisley grip/hammer/trigger set on a fixed-sight frame. "Bisley Hunters" exist too. "Bisley" on it's own will be an adjustable-sight gun, basically a "Bisley Blackhawk". The core frame is the same regardless, everything else bolts to that.
You can buy various parts to build combinations the factory never even considered. Want a "Bisley New Vaquero"? Brownell's has the complete Bisley parts kit for under $200. Also very possible: SuperBlackHawk hammers on guns that had something else to start (such as the SBH hammer on my NewVaq), Birds-Head grip frames stuck on other things, etc. Basically the sky is the limit and much of it can be home-brewed. "FrankenRugers" are cool as hell
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As long as the cylinder is in good shape in an unmodified frame with the barrel properly fitted, none of this affects strength.
If there's a combination you'd like that's not in the catalog, the cheap way to get there is likely a basic Blackhawk 45 in good used condition, customized as needed.