I have a T/C omega (black powder) and a T/C venture .308. Both are great rifles. I shot a .444" group at 100yds with the venture. Not bad for a off the shelf hunting rifle. I am not sure about the dimension but the venture comes with 5r rifling and adjustable trigger. You can't beat it for the price. Thompson center is owned by smith and Wesson. The customer service is excellent.