jeffbird, you don't use Federal 215s for primers?
Found the LR primers tightened things up a bit and provided better consistency. Tried several mag primers, Fed, Win, and CCI for comparison. Never had any problems with ignition with the 210's.
Dennis, the OP says he cannot find Magnum, but MagPro is available.
MagPro would easily run into the mid-2900's with the 176 Cauterucio in several 24" barrels, but I found that backing off just a bit to 66 grains yielded an average of 2880 out of a 24" and was just as accurate, and easier on the barrel and shoulder.
