Used to run my 40 and 10mm brass through the "bulge buster"as well, but ever since I got the carbide sizer dies (Lee set that loads both 40 and 10), I no longer need to do that.

Yip, tried some 6.5x55 brass as well as 40S&W - very tight primer pockets. Only use them for test loads and "leave at the range" batches.

Thank you.

Perhaps I could ask the question like this as well:

What is the hottest safe loads with plated 180gr "FMJ" bullets and CFE Pistol powder that members here have been able to safely shoot from their G20's?  COAL being kept to the standard.

This would give me some benchmark as to whether I should even consider working up to the published maximum with CCI 350's or does my logic have a flaw?

Thanks All for the responses so far.

I have tried this a while ago, but because I was super carefull, I reduced powder charge quite a bit. Eg, the min load is 6.7gr and the max load is 7.7gr - I used 7.0 gr of CFE Pistol with a 180gr FMJ.

What I saw was alot of powder blowback marks on my cases, and unfortunately I had a chrono malfunction at the time so I could not verify velocities.

Not sure what the blowback really means (typically, on bottleneck cases, that means a weak load that doe not expand the neck quickly enough to seal the chamber, but have no idea if this is the same with straight wall/short pistol cases...), I'm weary to try again, since I don't know if I already saw excessive pressure issues (the primers appear normal though, but again, not sure if pistols show the same tendency on primers wrt flattening when pressures are too high).

BTW - I'm shooting with a standard Glock 20 gen 4

Appreciate your inputs!

Hi

I usually use CCI 300 primers and CFE Pistol for my pet loads- want to know if it is safe to use the magnum primers, and if so, what adjustment I should make to my normal powder charge?

Thank you