I have been fortunate enough to acquire a model 66-4 3" with the beadblast finish, and factory magnaporting.
I shoot primarily 38 lead handloads out of it, and the porting makes a mess of the front sight rib.
I have taken to loading plated bullets exclusively for it as a result of the cleaning hassles.
Felt recoil, and muzzle rise are regulated more by bullet weight, then load, then barrel length, before any porting.
I would not send any gun, short of a full house 44 magnum for porting ,and then only if I planned on shooting a steady diet of maximum loads through it.
My 66-4, magnaported.
Regards ,,Allen Frame