I just purchased a POF and this info has me thinking. I've loaded my own ammo for bolt guns for over 40yrs. Also some Rem 742s. My out of box accuracy was not as good as I hoped. I've only got 200rnds through it and am going to start trying to brew up some better ammo. I got 260rnds of Winchester 147gr FMJ white box with it and am averaging a little less than 2" @ 100yds. I'm using a Leupold VX III 6.5-20X40 EFR mounted in Nikon P Series rings. My bullet is going to be the Sierra 168gr MK. I haven't made a powder choice yet but have a few jugs of W748. I found a deal on a few hundred Federal Gold Medal Match brass 1x fired in a Mod 70 Win. I've never tried a roll crimp on a non canellured bullet, don't know the effects of attempting it. I've adjusted neck tension before by modifying the expander ball but I'm not sure it would work on this platform. I have this stuff all prepped and ready to go, I just need to get some feedback on your experiences. I believe this rifle is capable of more than I'm getting right now. I've always been an RCBS man and have never tried the Lee taper crimp. I barely bump the crimp on ammo for my 5.56 but this is an entirely different beast.