Just range tested my first XHS repeater using the XLR Revolution Chassis stock. To say I am impressed is an understatement. About as comfortable as it gets for shooting a weapon of this class. Load I used was my accuracy load which only produces 3330 fps with the 300 gr Berger Hybrid at relatively mild chamber pressures but it shoots extremely well and brass life is amazing. Tested at 1050 yards today. Shot three, 3 shot groups, all were between 5" and 8" which were the first three groups fired from the rifle. After break in I suspect this rifle will be quite special. Recoil is about like a 270 Win in a 9 lb rifle, very mild. Rifle specs: 338 Allen Magnum XHS repeater Stiller TAC408 receiver Lilja custom ALLEN34 contour, SS barrel, 1-10 twist, 34" finish length 50BMG style flutes ALLEN PRECISION large 5 port Painkiller muzzle brake Bead Blast matte finish on barrel/brake XLR Revolution Chassis stock w/ modified Chey Tac 7 round DM Jewell trigger with bottom safety 40 moa rail base Two sets of 1.250" ultralight 30mm Nightforce rings NF NXS 5.5-22x 56mm with NP-R1 reticle Anyway, some gun porn!!! Here you can see how the Detachable Magazine box must be modified to fuction properly with my Allen Magnum case design. Because the shoulder location is moved forward to increase case capacity compared the the 375 Chey Tac parent case, the shoulder control bump must be machined out of the mag box wall. On the upside, it makes a functional ammo count window!!! Plus, its cool seeing those big sharp shouldered rounds sitting in the mag!!!