I own a bunch of J frame .38 Spl's.
Carbon steel.
Stainless steel.
Airweight's with aluminun frames.
Blue finish.
Nickle plate finish.
Two, three, and four inch.
Round butt and square butt.
Fixed and adjustable sights.
My oldest J frame is a Model 60 stainless Chief's Special purchased new in 1970 for the sum of $110. I've still got it and it is currently in use as a house defense gun loaded with Federal's +P 129 gr Hydra-Shok's. I've put approx 5000 rounds of factoryammo and handloads through this old M60 and it never has let me down. Everything from HBWC target loads to the orginial 110 gr JHP SuperVel loads that by today's standards would be rated +P+ and then some.
Never had any problem with flame cutting on any of the all steel models. Ditto for the alloy Airweights although these J's don't get shot as much as the others/
The cylinder on a J frame five shot .38 Spl is just as strong as the six shot cylinder on a K frame .38 Spl. Actually it is a bit stronger IMHO because the locking bolt notches on the J frame are between the chambers in the thickest part of the cylinder. K frame cylinders have their locking bolt notches right over the thinnest part of the cylinder.
I've shot just about every kind of factory loaded .38 Spl round to be had over the years. Including some pre World War One blackpowder factory loads. All manner of standard and +P JHP rounds, military ball including the WW2 Rem-UMC tracer loads. Shot loads and the Remington duplex load consisting of two large buckshot. The most powerul .38 Spl's of current production are the Corbon loads. These rounds duplicate the operating pressure and performance of the old .38/44 High Velocity loads developed by S&W back circa 1930.
So your last question is, "what would give the longest longevity to a J-Frame".
Standard pressure factory loads or equilavent handloads in an all steel J frame is my answer.
BTW, today, my FFL dealer sold my S&W Model 36-1 three inch heavy barrel squarebutt blued J frame for $250. This piece was in perfect conditon and showed only a bit of holster wear. Made in 1977. The 36-1 was produced by S&W for the Tokyo Police Department in the 1970's. Then it was sold as a cataloged model for several years. The police officer who bought it wanted it for a backup gun. I'd say he got a good one for his money.
Roadster
Carbon steel.
Stainless steel.
Airweight's with aluminun frames.
Blue finish.
Nickle plate finish.
Two, three, and four inch.
Round butt and square butt.
Fixed and adjustable sights.
My oldest J frame is a Model 60 stainless Chief's Special purchased new in 1970 for the sum of $110. I've still got it and it is currently in use as a house defense gun loaded with Federal's +P 129 gr Hydra-Shok's. I've put approx 5000 rounds of factoryammo and handloads through this old M60 and it never has let me down. Everything from HBWC target loads to the orginial 110 gr JHP SuperVel loads that by today's standards would be rated +P+ and then some.
Never had any problem with flame cutting on any of the all steel models. Ditto for the alloy Airweights although these J's don't get shot as much as the others/
The cylinder on a J frame five shot .38 Spl is just as strong as the six shot cylinder on a K frame .38 Spl. Actually it is a bit stronger IMHO because the locking bolt notches on the J frame are between the chambers in the thickest part of the cylinder. K frame cylinders have their locking bolt notches right over the thinnest part of the cylinder.
I've shot just about every kind of factory loaded .38 Spl round to be had over the years. Including some pre World War One blackpowder factory loads. All manner of standard and +P JHP rounds, military ball including the WW2 Rem-UMC tracer loads. Shot loads and the Remington duplex load consisting of two large buckshot. The most powerul .38 Spl's of current production are the Corbon loads. These rounds duplicate the operating pressure and performance of the old .38/44 High Velocity loads developed by S&W back circa 1930.
So your last question is, "what would give the longest longevity to a J-Frame".
Standard pressure factory loads or equilavent handloads in an all steel J frame is my answer.
BTW, today, my FFL dealer sold my S&W Model 36-1 three inch heavy barrel squarebutt blued J frame for $250. This piece was in perfect conditon and showed only a bit of holster wear. Made in 1977. The 36-1 was produced by S&W for the Tokyo Police Department in the 1970's. Then it was sold as a cataloged model for several years. The police officer who bought it wanted it for a backup gun. I'd say he got a good one for his money.
Roadster