The Model 65 was designed for .357 mag ammo.
If you shoot .38 spec. the impact point will be different than what the Factory regulated the sights for.
Not quite, my gun shoots the same weight bullet at 25 yards pretty much to the same point of impact with special or magnum loads. If I need to change the point of impact I change bullet weights. I have in my little bag of tricks 125 gr, 158 gr and 180 gr and each of the 125 and 158 gr bullets print according to their weight. My 180 gr only comes in magnum so I can't say on that one.
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