Sizing PP

[Nuclearcricket]

I would think that if you need to size your PP bullets, the best way to do it would be with a push through die in the loading press. That way you get a nice straight bullet. In the past I have had some alignment problems with luber sizers and have ended up with crooked bullets. I solved the problem by making an adapter that I can use in my Co-Ax press. It will hold a standard luber/sizer die upside down in the press and you just need a push rod to push it through the die. Same principal as the Lee push through dies but a little more versatile as you need one adapter and just change out the dies. If you need a custom sized die there are any number of places that make them at a reasonable cost. You also have the added advantage of extra leverage if you need it.
I wasn't sure if using a die this way would work for seating gas checks but I tried it out on some .30 cal bullets and it worked just fine and gave me a very nice very flat base for the bullet.
Sam