Both of these rifles are chambered for the 338 Snipe-Tac caliber. 338-408imp for those just reading the post for the first time. Rifle (one) is a Stainless repeater action with a stainless Barney Lawton barrel, 33" long twist rate 11.25 groove dia is .3295 (bbl is fluted) <font color="blue"> </font> Rifle (Two) is a Titanium repeater action with a Mike Rock 5R bbl-ABS carbon fiber system 33" long 9.25 twist rate. Groove dia .329 <font color="green"> </font> I tested the same loads in both guns to see how much the speed changes with tighter bores. 300MK 141grns H-BMG50 powder gun one: 3395 gun two: 3305 250MK 149.5grns WC 873 powder gun one: 3438 gun two: 3360 <font color="black"> </font> I set up some targets at 100, 400 and 500yds to test some loads in both guns. Gun one at 400yds with 300MK bullet WC 873 145.5grns 3400fps ave. Group 1.2" [image][/image] Gun two at the same range, 400yards, with a different load, 300MK 141grns H-BMG50 3305fps average. group size .352 [image][/image] I then fired gun two at 512yards with same load, 300MK 141grns H-BMG50 powder 3305fps group size .540 [image][/image] I shot some 350grn wildcat bullets for comparison, 141grns WC873 powder...3060fps (starting load) 100yds These shot right at 1" Didn't do much load testing as i only have about 20 left. In gun one several weeks ago the same tests were no good with the 11.25 twist. 3250fps It appears there is about 90fps difference between the two barrels, the tighter bbl is a bit slower. It is hard to say what the accuracy difference is between both guns, the triggers are not the same, Gun Two has a Shilen trigger set nice and crisp, gun one has a factory Remington trigger and it needs work or replacement. Both guns will cut a bug hole at 100yds. Due to trigger issues with gun one, i didn't do any 500 yard testing, just pulling the trigger on the 400yd target i could see the crosshairs moving back and forth across the target before the sear would drop. I am so use to a 2 ounce trigger that a 3# pull is a nightmare! Both of these rifles are carry hunting guns and are set up accordingly. Both chambers are identical. Barrel lenths are 33"... with brake, 35.5" Both guns have the same carbon fiber Lone Wolf stocks. gun one has a IOR 6-24 with 35mm tube gun two has a Nightforce 5.5x22 30mm tube both guns have a 40moa picatinny base Gun one weighs 16.7# Gun two weighs 15.2# both guns shot from sandbags on my special shakey bench!