Had one since the beginning. Also have three PW's in various models. Load on all three but if I had only one loader, it would be the grand. they give far more flexibility when working up loads. Have absoutely no problems when changing hull brands. In fact that is one reason I would choose the Grand over the PW's. You can bet that if someone had problems with one, it was not properly cleaned. Re-claimed or over graphited shot was probably the problem. After about 3000 rounds it is a gooid idea to give it a wipe down and blow out. They hate dust and grit just like the PW's. Mec's are great but are set up with more forgiving tolerances than the Grand, Pw's and Spoilers. The broken part usually spoken of is the shot and powder shut off gate and I think they are $.60 each. I had problems when trying to load re-claimes shot (yes it was cleaned) and there was still enough grit to bind the shutoff plate. I bought six extras and went back to new shot. Have loaded about 15,000 rounds on the current parts with no problem at all. CLEAN!!!
Primer feed can be assured if you cycle the drop bar by hand to preload about five primers in the tube. Like every loader I have ever seen, get in the habit of looking to see if the primer dropped. On the Grand at least it is in a location where it is easily seen.