7 LRM reamer specs?

[zfastmalibu]

Anyone know the freebore and neck diameter on the reamers Gun Werks sells? I want to build one of these but want the shank of a 180 vld above the neck/shoulder junction. I have called but the guys have been teaching classes and I can never get a hold of them.

Anyone know how well the Hornady dies they sell match the chamber? How much do they reduce the shoulder diameter?
Thanks,
Alex