Ron I don't know about you but those less expensive XTPs shot good enough for me. And like Cayugad said, 200 yards is a long way to throw a ML bullet.
The Lehighs are nice but......at just 5/8" difference in group size at 200 yards that ain't enough to justify buying them.

Anyway, that is some nice shooting. I like that stand too. I have one similar made out of 2x4s and 3/8" threaded rod. But I like yours better. I've also found that those threaded rods don't stay very straight when you hit one square with a .58 caliber PRB during sighting in.