I've mostly reloaded pistol rounds, and some 7.62x39 rounds, but recently got myself a Savage Axis is .243, and I'm starting to reload them a lot (to save money).

I know rifle rounds need to be trimmed after a few firings, and I purchased a Lee trimmer set to do that. I've been watching the case length after every firing, and now I need to trim a few cases...but I'm confused about the Lee trimmer. The one I purchased is the "cutter and lock stud", along with the specific .243 "case length gauge"http://leeprecision.com/cutter-lock-stud.html and http://leeprecision.com/gage-holder-243-win.html).

Problem is...the specs for the .243 Win case says that the max trim length should not be over 2.045 inches. As you can see in the first pic, this case is just a smidge longer than that, so it should be trimmed:



So, I put together the pieces of the Lee trimmer set, put the case in the holder, but the cutting blades of the trimmer aren't even close to the mouth of the case:



The ".243 case length gauge" has a pin that fits thru the primer hole, but when the case is held in the "lock stud" piece, the primer hole is blocked, so I thought maybe that was the problem, and tried inserting the case length gauge into the empty case without the holder/lock stud...but the blades still don't come close to the case mouth.



So, what am I doing wrong? I've read that other people are using this same Lee trimmer arrangement successfully, the case length gauge is marked for "243" do it doesn't seem like I've got the wrong piece...

Anyone use this Lee trimmer arrangement that can give me a hand here?

Thanks.