One brand of bullet that didn't seem to get high marks from Doc GKR was the Hornady XTP, which sort of surprises me because of its popularity for handgun hunting and also as a non-SD general handgun bullet design. This seems especially true in the case of semi-auto calibers. The Critical Duty and Critical Defense seem to be acceptable but Hornadys flagship appears to have run aground in the SD market even though it's often loaded by other ammo manufacturers for some of the higher velocity caliber combinations like 357 SIG & Underwood. What do you believe is holding the XTP back? I have seen some iffy expansion in some of Lucky Gunners gel tests but there has to be more to the situation than that.