I just wanted to post a simple but important step in getting airgun ammo to correct size.. I'm sizeing using the Lee kit it cost $25.00 mine is for .510 diameter... I'm using my old Redding ULTA mag press...In my case of sizeing 650 grain Spire Point Boat tails a big press with extra leverage a plus...My slugs are cast then powder coated...After that's lube and sizeing.. It's not hard or expensive... Well worth the effort.. I like my slugs cast over bore diameter and then size.to bore diameter...