These are my Weatherby Accumarks. The one with the brake on it is a 30-378 Weatherby and the other one is a 257 Weatherby. The 30-378 launches 200 gr Accubonds at 3200 fps and is one of my elk rifles, Nikon Monarch 6.5-20 with turrets for elevation and windage. The 257 launches 110 gr Accubonds at 3500 fps and is my open country deer rifle, sighted in at 300 yards with a Pentax Pioneer 4.5-14 scope. It is point blank out to almost 400 yards. I replaced the trigger springs on both with aftermarket springs.