Tacoma
Member
As noted the Jmagnum frame was phased in during 1996-1997 and is now the standard J frame. It was done to introduce the 357 flavor mod 60 and +P capable 38's. Grip size are still the same. Weight and size is about 10% higher. I have old and new J frames in both sizes. The older ones obviously conceal easier and weigh less. The extra beef of the new J magnums tend to make them shoot better IMHO.