I won’t talk you out of it. I built one using a BHW barrel. Smart going with the 9 twist, so you can shoot 30gr if you want. The reloading process is not hard once you figure it out. A small base die is not necessary, but if you have it, go for it. All I do is take .223 brass and full length resize it in a die with the stem removed. Make sure to fully resize, camming over on the press handle. Then what I do, which you might be able to get by without,is, I bought a .19-.223 die from James Calhoon and I run the resized .223 brass through it, with the stem removed. Better to neck down in steps, so I go from .224 to .19 and then to .17. The last pass is in the .17-.223 die WITH the stem in place. Whenever I work brass, I use Imperial Sizing Wax. The stuff is great and a tin lasts forever. Whether you do it in 2 or 3 passes, you’ll be fine.
