I have a Tikka T3 with a Leopold Mark HD5 scope. When I put the gun in the Kolpin Stronghold Gun Boot L from Kolpin Outdoors, it is a tight fit. With the tight tolerances, though, there is little to no movement of the gun during trips on rough terrain. The gun boot is mounted on a quick mount, so taking the boot out of my vehicle and putting on the quad is a snap. Likewise, it is nice to be able to pull the gun off the quad and put it in my vehicle, and with the boot, I don't need another case. I use a bike lock to secure the boot in my vehicle when I'm traveling, adding to the uses and pros of this product.