used only
357 Redhawks came in stainless steel, with barrels of 5.5" and 7.5".
I kept my 7.5" because I like its sight radius better, and its weight makes it my favorite choice for USPSA's Revolver Division.
It is enormous for its chambering (consider, please, that same cylinder can hold six rds of 45 Colt. I traded that one --the 45 Colt version-- for a 1911 in 40 S&W. I sold my 5.5" 357 for funds to send one 9x19-chamnbered 1911 to EGW).
(Yes I've owned a 'few' Redhawks.)
If you can find one you'll have found the strongest DA 357 Magnum.
If you prefer SA, buy a Freedom Arms. Call them and ask which model they consider strongest.
If you want something RIGHT NOW just go buy a Ruger 6" GP100 in carbon steel.
They're pretty tough, too.
(Tough enough that more than one ammo company uses/used them for load development. Including CorBon....)
(I still own two GP100s, the 4" stainless steel KGP-141.)