I have been reading about smashing 40's into 44's using dies, so I have more time then money right now so I figured out how to do it with reloading dies I had on hand. Tried them at the range this mornig and got 3" group at 50yrds ( AT 7am the sun was in my reddot scope). I just wanted to see if they were going to stick in the barrel. LOL.
It wasn't hard I used a craftsman 7mm deepwell 1/4" drive socket (compound beveled the socket end) to expand annealed 40 cases. Stuck in a Berry's 148gr plated HBWC (hollow forward of course). Smashed it into the case with Lee expander die (useing small expander). Then ran it trough the Lee .431 sizer die. Then used the ram from the Lee push through sizer to push the slug up into a RCBS 308x1.5 sizing die(with decap assembly removed) to form the ojive/hollow point. then run through sizer again. Viola! 200gr .431 brass jacketed hollow point.