Had (still have) terrible ftf issues with my pmr30, so it was suggested that I grind down the lower third of the barrel and ramp so the bullets can more easily enter the barrel. I have not fired the gun yet, and am now questioning if I'm going to have powder blowing back towards me or damaging my firearm by removing what I did? I don't have a problem buying a new barrel if necessary. Just looking for some advice. Thanks. And yes I know it will be buffed as smooth as imaginable. After further reading I found that the gouging, pounding of the slide is also not normal and could be part of the ftf as well, possibly preventing the bullets to slide up level enough to enter the barrel with little resistance.