Well I only have 1 - 600 in 308 vent rib, with a 3 x 9 Leupold. But, I have 3 each 660's, 1 in 308, 1 re-barreled to 260 Rem with a 24 inch 1 in 8 twist, both with 2 x 10 Weaver scopes. Last but not least a 660 re-barreled to 458 x 2 American, with a 1 x 6 Leupold VX - 6. I have replaced the bottom metal (plastic) with replacement bottom metal sold here on the Campfire, on all but the 458x2 so far.
