I have been looking at a new .22 calibre varminting round, and i have decided on a .22GT . Im currently running a .22 BR 1-14 twist for 40g. Have had a 1-9 75g Amax in the past , good stick . New build is BAT TR and proof 1-8 @ 20" . Finished truck rifle. What im asking is how do i get a die set built for .22GT. I only have 6mm GT brass , but i need to send 3 pieces to whidden for custom dies. What are my options to make brass ie, .22GT to make final reamer print.Do i buy 6mm GT die and appropriate bushings, then have a .22 full length sizer from whidden . Need to get brass, bullet combo sorted ie, 80g ELD or 77gTMK in a .22 GT CASE for reamer print manufacture. Cheers for your time Lee ENGLAND