Small 6mm case in between a 6br and a 6dasher.
George Gardner and Tom Jacobs designed it. Hence the GT. It runs 95-115's at 2900-3100fps and is extremely efficient. Plenty if guys shooting it in PRS comps and I know some hunting with it.
Hope that helps!
The New 6GT Cartridge for Precision Rifle Competition Report by Vu Pham Earlier this year I was ready to build a 6 Dasher when I saw a lot of buzz on the interwebs about a new caliber George Gardner (Owner of GA Precision) and Tom Jacobs (Owner of Vapor Trail Bullets) designed, the 6GT.