I bought 5000 Cheddite primers because of the price and am down to the last 100. I'll be glad when they are gone!!! I will NOT buy them again. The primers go bang when the trigger is pulled and the loads perform well. However, the lot I bought are 0.002" larger than either Remington or Winchester right under the flange. This has causeds some loading problems which are real headaches. As long as you are loading hulls with real brass heads, such as AA or STS, and don't do any primer substitution, there are no problems. However, just don't go back to an American primer. Every now and then the smaller primer will just fall out; sometimes while you are loading and other times when you take them out of the box. The shells with the American substitutions do seem to work OK in O/U or S/S shotguns, but not in automatics where residual pressure or bolt movement to the rear will often send a spent primer back into the workings of the gun and tie it up. The other problem is that most hulls, especially the Remington Field hulls now use a steel or brass plated steel head. I've had problems with getting Cheddite primers to completly seat when there is no issue with either Remington or Winchester primers. Obviously, the seating can be adjusted, but it always happens right after I've been loading AA or STS hulls with American primers and I forget to make the change. To me the aggravation does not equal the difference in price.
Johnpe