I have hunted with Gregg in Gilette Wyoming at the Durham Buffalo Ranch. It was with Handgun Hunters International, their yearly antelope hunt. I took the second largest antelope that year, and shot him at 429 yds with a TC/ Contender in SSK's 338 JDJ using 180gr. Ballistic tips. I had the gun sighted in at 300 yds. and had my chart that showed it dropped 16 inches at 400 yds so a little hold over and dropped him. My longest big game kill so far.
Gregg is the organizer of the yearly hunt. I attended 2 yrs in a row and had a great time both years. There was a lot of land to find the antelope of your dreams.
Does Gregg post on this site?
Tarey