From a guys who's burned a handful of gt and creed barrels, a 24" 6gt is comfortable with 105-112gr bullets at 2920-2960. A 26" barrel can run the 3030 node but it's warm. I run mid to low 2900s in my 28" prs rig as it's low pressure. A 6creed is mid node of 3050, and top node 3130-3150. They'll go over 3200 with rl26. You're talking a case of 46gr capacity to one with 53. There's quite a difference there. However 105 hyb kill very well at 2950fps mv out to 600y in my testing on deer and Antelope. Used the 108 elite in 6cm this year to kill lots of game from 400-730y, with a muzzle velocity of 3050. The gt will run that bullet at 2940 easily, and have the same comparison performance at 650y. A 6gt, is extremely easy to load for, drop 36.3-36.7gr of H4350 with a 105-112gr bullet, testing 10k 20k 30k 40k seating depth, pick the best, verify at 400y on paper. Go shoot stuff. I'm on my 5th? Gt pipe, and every one has done just that. One I ran 115dtac at 2860 with 35.3gr H4350.