Last year the challenge of a 300. Win Mag following my attempt to shoot a 44. magnum. Me being the person who is going through 'recoil therapy'. So today after doing some mental math (its been close to two months since I have last been to the range. not good!) I asked if we could finally take out the 300. win mag to see just how bad recoil could be. And for the record Dad has unofficially named it the "Shoulder Crusher". The rifle by my best guesstimate was somewhere around eight to nine pounds. using past experience of the recoil difference of a M1 Garand and M1903, the former being 3 pounds heavy with a semi-auto action compared to the latter with a bolt action, I was worrying for my shoulder. But thankfully it wasn't the case, The recoil was rough but bearable. I cannot get a idea for shooting a few hundred to a thousand rounds of 300. Win Mag without a muzzle break. By the end of the day, my shoulder is still in working order. and now I need to find a Anzio 20mm. Will buy the ammo.