Hi Steve
,
This is NO way, a flame on you.
It's base on my observations only.
My take on the "weak case" if you will,is how much metal is around the cartridge.
And,what type of steel,the heat treating etc determines the max it can handle.
Plus,if the chambers were made correctly.
And whether it's a 5 shot,or a six shot.
For my "weak case"; about 3-4 weeks ago,I was shooting my Uberti 45 Colt.
The loads were/are new Starline cases,with Triple7.All shot OK.(255gr)
Extraction for the 5 was good.Cases looked good.The sixth one,wouldn't extract.
Took the gun to the Honda.Had my cleaning set handy.
Removed the cylinder.Finally it came out.Examined the case.
The case was a body split.The 5 chambers measured at .485".Sixth one at .486".
With this model,I can't use warm loads.The max this gun can handle is around 900-950 FPS.
My Ruger BH chambers measures .483" for all 6.
So, yes, the Uberti chambers are oversized.
I can't find fault with Starline.
Steve,you have a good week.
Krooz,I might suggest the 270gr GDSP Speer.
That is,if your finances will allow it.
My Ruger Redhawk likes them.
Best of luck from here.