[Cholla]

I'd bet the farm it'll handle the same loads as a Ruger New Vaquero and the Uberti's. Remember, the Ruger and Uberti's are chambered in 45 ACP whose factory +P loads run in the 23,000 psi range, and since their cylinders have about the same external dimensions as the Standard, I'd imagine the Standard would handle the same pressure loads. You can ask them, but I think we all already know the answer.

Cholla

 

[Cholla]

It aint the cylinder dimensions that count. It is how much steel there is left between chamber and lock slot for the bolt that is the weak link in a Colt/SAA.

This is how they get "blown" with too much pressure. A USFA USA made cylinder btw. Locking slots are bad on 4 or the 6 cylinders here.



Colt has the least amount of steel at the bolt cuts but they use a heat treated cylinder to add strength to the cylinder.

Uberti, USFA, Standard all use a bigger (and same size) cylinder and offer slightly more metal on the lock slot.

I don't believe..please correct me if I am wrong...that Ruger has the same size anything.

That lock slot and the added steel of a 44 Special cylinder wall compared to a 45 Colt cylinder is why you can push the pressure limits in a 44 Special in a Colt SAA. Can't do it in a 44/40 or a 38-40 either but you can in a 38 Special and a 32-20 until you start getting primer flow that will lock up the guns.

The diameter of the cylinder has a direct influence on the cylinder wall thickness under the bolt notch, provided the distance from the chambers to the center of the cylinder remains the same, which it does on Uberti's vs Ruger New Vaquero's. In the post you inked above, I provided pictured and measurements to illustrate this.

In the April-May issue of Handloader Magazine Brian Pearce addresses this in his column. He also states that current production Uberti's cylinders are made of 4130 steel and he's tested them to around 34 Rockwell. I found this info that indicates the 4130 is not as "tough" as 4140, but is slightly more machine-able.

https://www.capitalsteel.net/news/blog/4130-vs-4140-steel-comparison

So, all things the same, it appears maybe Standard's cylinders might be stronger than one of identical size but made of 4130.

Cholla