I have the Lone Wolf Dist 9x25 Dillon and Storm Lake 40S&W and 10mm barrels for my G-29 they have been great for me. The Lone Wolf Dist has a very tight chamber for this caliber almost like a cartridge gauge which is slightly tighter spec.
These have been very accurate with both copper jacket and cast alloy bullets from each.
I will say that when I carry I carry with my factory barrel, WHY you might ask? It's well supported, works very well, is accurate and never misses a beat with any 10mm rounds I've thrown at yet.
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