Years ago I went on a moose hunt in Canada with a guy I knew. Jim wanted to take a rifle with a little more killing power than his 270, so I let him borrow my 300 Weatherby while I took my 375 H&H. For the area we were hunting, 100 yards shots are considered on the long end of the spectrum, with most shots being closer to 50 yards. For three weeks before we left, I badgered him to shoot and practice, according to him, work simply didn't afford him the time, even though he didn't work Saturdays or Sundays. It was all right that I'd spent hours working up a load and sighting the rifle in, but he couldn't spend a half hour just to practice. I had sighted the rifle in for a 100 yards but I explained to him that rifles shoot differently for every shooter and that he needed to make certain that the rifle zero was right for him. On the fifth day of the hunt I heard him shoot and went to investigate. From where he shot to the blood stain was 80 yards at most. All he kept repeating was, "he's a monster". He went, got the guide and began the search. Two hours and a couple of miles later they found themselves at the beginning of a swamp; this was the delineation line between the reserve we were hunting and Federal land that didn't permit hunting; he lost his moose. The guide surmised from the color of the blood that he'd missed the lungs, and hit the moose too far back. There's a hell of a difference between a 270 Winchester and a 300 Weatherby, you need to get acclimated to the recoil. The kill zone on a moose is twice that of a white tail, but he still managed to miss it at 80 yards. I didn't have to tell him he was an idiot, he knew. He lost a trophy of a lifetime just because he was to lazy to practice. Other than my son, I haven't allowed anyone to borrow one of my rifles since then. The SOB never even offered to pay for any of the bullets, powder and brass I bought for the hunt. That in itself should have told me something, never hunted with him again.