I guess this dicussion is "off the board"
I recommend a Taurus 608 in 4" (8 shots
) only because I own one and have put well over 3000 round of full factory .357 rounds through it without any problems. "Don't get me started on the new Rossi . 357 I bought"
or a Ruger GP100.
As far as Forged vs. cast?
Well, as a man formally in the moto-X/two stroke industry, the factory used cast (as does most Detroit muscle cars) piston without any or much problems in there engines. And forge is and was available, but most racer choice of the factory cast because of perceived reliability.
TBS, forged pistons (also cranks,cams, rods and others) have been proven more durable, but at a much better tax of capital. Which may or may not justify.
I'm sure both forging and casting (A cast vacuum system first used by Yamaha in it's motorcycle/snowmbile frames "less metel/more strenth"methods) have improved over time.
So,... let's not split hair's!
Both are viable sources of a quality manufactured gun, or any other piece that demands excessive force's.
By the way, you have to account that forge pistons require loser tolerances for heat expansion, FYI.
Enough psycho babble
Time for another drink. Thanks for the humorous reading.
PS: I own a Rossi,Taurus, Ruger and a S&W revolver.