I have had both barrels one a 7mmtcu in bull barrel with a 14 " barrel all I have to say is wow and accurate used all bullet wieghts using hornady sst and regular interbonds from 120 grain to 154 grain the154 grains were extremly accurate, with recoil.
Mow the 7mm waters was intereting, I found it on e- bay a few years ago, with scope and got lucky enough to get it I worked with it for two years and just could not get the accuracy that I wanted I guess, I wanted to use th154 grain bullets so bad that after all that time and money spent, I should have settled on a lighter bulliet the barrel legth was 22" and was a costum shop barrel, the whole thing weighed 7lbs. with scope and full uncle mikes bullet holder on butt stock, talk about the altimate hunting rig, the best accuracy at 100 yards was 1 1/2" I thought it sould have been better, but I really believe it shines out of a 12-14" barrel. but that is only my view, the federal ammunition, is rather heavy recoilish out of my rifle, the primers also after fireing poped abput half way out of the pocket, no big dael if you reload it did not happen with reloads, I even made my own cases out of 30-30 brass after resizing the neck to 7mm, and fire forming. was fun. kjg