[QUOTE=brentc;496620]I didn't like them much when I used them on my 300 WSM. I couldn't get them to grip the scope. Ilapped the snot out of them
and torqued the screws to 35 in/lbs and still had slippage.
That's odd, is it possible that they were lapped to the point of enlarging the clamping area enough to no longer hold? I'm thinking of the ring "ears" where the screws go in, touching before the rings attain sufficient clamping force. Trying to make as much sense as I can! lol
I use the XTR's on my Lazzeroni Patriot (very similar to 300wsm), 358 STA shooting a 250grn Partition @ nearly 3K, and my 338 RUM throwing the 300smk at over 2700, I've never had a scope slip on these rigs?? I can't imagine them not holding on to a short mag??
There is a real head scratcher there....
To the OP, as stated I use them on 4 rigs (DPMS LR-243 is the 4th), i've had no trouble to date. From my experience with the XTR's I would have no trouble recommending them to another shooter (you