The mechanics of barrels are completely unpredictable for me any way, my Endeavor will drive nails at 100 yds with the Lehigh 200gr 50/40 but the Triumph won't shoot it but it shoots really good with the Lehigh 185 which the Endeavor don't like but both will shoot the 250 Lehigh, both will shoot the Shock Waves all of them both will shoot the 250 Deep Curl but only with a lighter load of 110gr of Blackhorn. I really wish some one would explain the barrel mechanics of vibration so I could understand them well enough to change them around and make what I wanted to shoot instead of what the guns feel like.