I owned a Belgian .405 DR,, a Rasch, if I recall correctly, for a while. It weighed about 7-1/2 pounds and was punishing to shoot, even with a thick recoil pad. I never did get it regulated - neither old Winchester factory ammo nor modern handloads would group closer than 6 inches for four shots at 100 yards, and I finally sold it to Pete Harvey. At last report it was going fishing in Alaska on a regular basis, as some of the larger, hairier fisherman up there apparently object to sharing.