Many of the 450BM barrels are actually a light profile because of the .45" hole in the center. Adding more barrel weight helps smooth out the recoil. The 350L is also a good option if your shots are typically under 200yds. One of my hunting buddies (tall slim guy in his late 50's) borrowed my 450BM but didn't like the recoil. When he returned it at the end of the season he asked about a 350L, so I let him shoot my sons 35AR (extremely similar predecessor) and he liked it, so I made him an 18" heavier profile 350L barrel with carbine length gas system. He loves it. Nice light recoil and still puts the deer down at the ranges we hunt.