"effectively double the chamber strength in .45 Colt. "
My point continues to be: "Pretty optimistic. Stronger sure. But all the Ubertis and the vast majority of the USFA guns use the same larger cylinder and window dimensions."
Early 1st gen Colts were malleable iron cylinders and a RC of 22-24. Intermediate Colt guns with later formulation carbon steels went from RC24-30 over the next century. Current Colt and some of the better imports, including Uberti using modern US chrome moly steel or similar European steel, RC test at a RC 30-35 and have as early as 2000 and before.
So while the bolt cut and cylinder on a .45 added .010" on a USFA, and are indeed stronger than the originals Colt's....the USFA or Uberti cylinder's (which are one and the same for this conversation for steel quality and pressure) is no where near capable of handling "double the chamber pressures" of even the original .45 Colt loads.
I've read, and re-read the above posts and have yet to find anyone, self included, advocating the use of loads generating "double the chamber pressures" to which you refer, where the 45 Colt is concerned. The nearest thing I can find is Mr. Pearce's quoted reference of the USFA .45 Colt chambers being
effectively doubled in strength due to the additional metal in the area of the bolt notches. Far from a recommendation of feeding said revolver 28,000 psi loads, I'd say. Surely most handgunners with even a modicum of knowledge understand that most revolvers can "handle" far more pressure than generated by factory loads; the issue however is accelerated wear on the revolver. Were it not so, then most revolvers would come from together when the required proof load was fired in them.
Another interesting little tidbit I discovered is the fact that my USFA's cylinder dimensions at the bolt notch are all but identical to those of my Ruger NM Vaquero in the same caliber, which is generally accepted as being able to handle loads in the 22-24,000 psi range.
If you disagree with the information I've submitted, you're spinning your wheels telling me. Your best bet would be to contact the original source of the purported information, Wolfe Publishing.
SAMMI spec on the original .45 Colt is 14,000 psi. 44 Special has even more steel in the cylinder obviously and why Elmer used the 44 Special instead of a 45 Colt. Even Mr. Pearce limits the useful pressure in a USFA .44 as 22,00psi there.
http://www.goodrichfamilyassoc.org/44_Special_Articles/Brian%20Pearce%20on%20the%2044%20Special.pdf
Don't get me wrong, the USFA SAAs are nice guns. I have owned a number of them for m the US gun's inception. Love them. But the original SAA design, even with an added .01" is still by comparison, to almost any modern revolver, a weak and obsolete design.
I would think one would be hard pressed to find a traditional SAA from USFA chambered in .44 magnum. Or any USFA 44 mag. besides the heavier framed Shooting Master. Please correct me if that is my error.
It's difficult to discuss this subject when you haven't read the information to which I refer, and honestly it's pain to quote the source only to have someone argue with you. The information regarding the .44 Magnum is in the aforementioned magazine.
Honestly, I doubt either of us know more than the other on the subject, but I tend to trust information from those who are paid to gather the information, rather than someone on an internet forum.
Really, do yourself a favor and order a back issue of the magazine. I found the article to be fascinating and informative and think you would too.
Cholla
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