I too own a GP-100 in .357. Mine is fitted with a 3" barrel, fixed sights, and the compact style grips.
As you have already heard the GP-100 has earned a rep for being one of the strongest if not THE toughest .357 revolver out there. The reason this particular design is so strong is no mistake. If you notice the revolver has no screws... is really is a SOLID design(slight pun intended).
I consistently load mine with 110gr magnums as I use it for home defence (I hope I get the opportunity to plug my ears before I have to shoot indoors).
If you are considering a medium frame .357, my first choice would be a GP-100. Yeah maybe the Taurus and Smiths have better triggers and are a bit more handy (the GP-100 is not a small gun), but my bet would be if you were shoot all three side by side to see which one failed first, the Ruger would be the last one standing.
Ain't that why you buy a revolver...power and durability!!!
AS far as ammo, my 110gr mags seem to hit pretty close to point of aim. This ain't no target arm, strictly combat and field work. I would have no problem loading any FACTORY load in .38 or .357 magnum.
Ruger customer service is quite good. My Dad is one of the many individuals who sent in his old three screw SA .22. Not only did ruger install the new safety system, but they reblued the gun too. The gun is now about 30 years old. Not bad!!!
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"By His stripes we are healed..."
PeterGunn
[This message has been edited by PeterGunn (edited November 19, 1999).]