Yes I have one. Full Power 357 loads are uncontrollable, I can not keep my support hand on the weapon when firing these, the muzzle flips and the gun twist to to right. Med Velocity 357 Loads, Golden Saber and Gold Dot SB, are controllable but slow on follow up shots. My compromise load is Buffalo Bore's LSWCHP 158 Graiin +P. It is an expensive , $1.50 a pop, specialty load.
If I were still qualifying and had to buy ammo for it, I would use 135 Grain Gold Dot Short Bbl. 357's.
In truth a J Frame is at it's best in 38 Sp., save $200-$300 and go with a 442 or 642. If you MUST have POWER in your pocket, get a Baby Glock or Kahr
I have a J frame Model 60. 357 mag is ok in it but it is heavier than 340. The Night guard 327 and 386 or both a little heavier and should be fairly comfortable with 357 mag. They both have night sights wihich I like better than hi-vis.
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