I was wondering if anyone on hear has ever tried the 6mm 115gr DTAC with a 1 & 7 twist. Instead of the 1 & 7.5 twist used by David Tubbs. I planed on using a 30" Kergier barrel
Make a piece of brass. Seat a bullet to the length you want it, i.e. put the boat tail where you want it to be in the dummy round. Send the dummy to David Kiff. Tell him you want the reamer and it's leade or throat to be best suited for this arangement. He'll make the required measurements and set you up a reamer. You may want to specify neck deimensions etc.