My M29 was factory indexed. It shoots sweet.
In 1963, the frame size was made larger to accommodate stouter loads, these are known as Old Model Blackhawks.
In the early 70’s the transfer bar system was introduced, the frame size remained the same. These are New Model Blackhawks.
The New Model in 45 Colt can handle loads even hotter than 44 magnum, loads that would blow a lesser gun into orbit.
These loads are listed in the manuals as “Ruger only” because those are the only guns that can handle them.
The original Vaquero was built on the full size Blackhawk frame and can handle these very stout loads.
The Cowboy Action shooters liked Ruger Vaqueros but did not like the big clumsy size and lobbied for a return to the old Colt size.
Ruger accommodated them and produced a smaller size, the Cowboy people shot low power loads anyway.
I have a 1959 Flat Top 357 magnum ( man is she sweet ), a New Model Blackhawk 45 Convertible ( has Colt cylinder and ACP cylinder ), and a New Model Super Blackhawk 44 magnum.
My life would be complete if I could find, and afford, a Flat Top 44 mag.
Significant what 2" of barrel will do to fps. I bet those would almost be a leading problem in a rifle. If I remember that happens ~1800 fps
About this time last year I picked up my first revolver which was an EAA Windicator .357 in a 4 inch barrel. I really don't live in black bear country but we have had sightings in our area alibit few and far between so I figured why not look for some bear defense ammo. I ended up getting a couple boxes of Buffalo Bore Heavy Outdoorsman 200 gr hard cast after I did a bit of internet research. Haven't had a chance to put a few down range yet but on paper they seem like they'll do the trick. If I was in an area where bears are a legitimate concern most likely I would pickup a Glock 20 and be done with it.
Also, anything above 1600 fps in a rifle should use a gas check bullet.
Mike Venturino, well known gun writer, has done articles on shooting lead bullets out of his Springfield Model 1903, and other old rifles. He says gas checks are mandatory in those applications.
It's too bad cheap lead is not around for casting now. Used to be able to use wheel weights, they had some tin and were harder. For PRB you want pure lead to engage the rifling. Roofing flashing or plumbing pipes were a source for that..
5 shots from a 0.50 Hawken with opens 50 yds, at 100 yds it's about zero, and goes through a deer. That is with old eyes
Gosh, I'm sure I read it Cooper's corner but close friends of the Colonel always suggested using solids for game that would kill you. Break bones, forget about the flesh. They were talking the big continent but big bears here I'm sure qualify. And shoot again once they are down! Can't be too sure. The friend had a Scandinavian name, That's going to drive me crazy till I remember his name. I'm sure someone here knows who I'm referring to... I sure can't remember his name but he took a lot of dangerous game in Africa. Sorry to go off track.