I had an early Mk1 version in .45WinMag. I distinctly remembering the first ever shot going into the X. Subsequent shots were all over because I was shaking so much.
I eventually had the barrel Mag-na-Ported which was a big improvement in reducing muzzle rise. I enjoyed shooting in indoor ranges because after one mag I had the entire section to myself.
At that time all the Win ammo I could find was already old or used some weird powder because it gave spectacular 6 foot muzzle flame and 3 feet out of each of the ports. Took out a few light fixtures on the aforementioned indoor ranges.
After about 300 rds some of the internal parts started to break. Extractor, that round link on the bottom of the barrel and the pin holding it. LAR replaced them for free. There was a scopemount for the gun but it was useless with the awesome recoil always shifting POI.
It's a fun gun. Useless for CCW despite what Hollywood shows and expensive to shoot. Handloading is almost a must for the .45WM and .50AE.
TYCOM