Cheddite Primer pressure spikes

[Craig Larter]

I had my 20ga 3/4oz load tested with Cheddite cx 2000 primers and Unique 14.5gr. They came in a little hotter than I like so I dropped down to 13.7gr and I am having them retested.

[Double Lab]

That's a pretty consistent load Craig. It's interesting that the Alliant website calls for 15.4gr Unique at 1200fps and 8200psi. Somewhat alarming that Ched 2000 primer makes that much of a difference. I'm currently loading Universal Clays in my 3/4oz load just because I was able to buy 6lb of it and to save my 20/28 for my 28ga. I found a low pressure 7/8oz load and reduced the shot charge to 3/4oz which keeps it in a safe pressure zone. We have to think out of the box nowadays.