My rifle is a 300wsm that was built as a "tightneck" on a reccommendation from my gunsmith at the time. Over the last couple of years I've noticed that it was getting passed over for other guns in the safe because turning brass became a pain in the butt. Getting to the point I had the rifle opened up to a standard 300wsm chamber from the original .336 neck. The neck of the fired brass from the new chamber measures .343. What size bushing do I need to buy for my redding dies to load for the new chamber? Would .342 be to tight? All of my other stuff is standard FL dies but I spent a lot of money on the original set so that I could load for the smaller neck diameter. A new bushing is only about $15, the dies originally cost over $100 so I want to keep using them! Thanks in advance!