First of all, I haven't shot a magnum rifle like this in about 20 years and it was a friends .338 Win Mag. So as yall might understand I was somewhat skeered and a little more than nervous about this thing. I know now that my M1s and M1As don't have any recoil compared to this .300. I set up at the 25 (left target) and fired a shot. I had to see how bad this gal was going to act. Well, I hit about 2 1/2 inches left so I fired another one for effect and hit a little lower. I adjusted right and put the next two in the lower left side of the 10 ring. Tweaking the scope a little more the fifth shot hit in the diamond. I figured I had it in the bag now so I trekked on down to the 100. Got all set up and got a little jittery again so first two hit high (right target) where I expected but not together. i adjusted the scope and busted the diamond. I decided to put another into the diamond and pulled right. Anyway Joe told me to zero one inch high at 100 since we will try to zero next Wednesday weather permitting. I fired another and got it up a bit and the last one hit exactly one inch up so I quit. I have decided that after we shoot next week, I will leave the rifle with Joe and have a muzzle brake installed. I spec that in my old age I may be getting a shade wimpy, but for a few bucks more i won't let that thing beat on me like that. Elk watch out cause here I come. I tried to attach the targets, but it won't let me.