I know several elk guides who bring their rifles to the obligatory range time, the night before the hunt begins. The way the story goes, the client's new mountain rifle is off, can't hit the 4x8 sheet of plywood the 200 yard target is on. The guide says, you want to try my ____? They dial it and then start moving them onto the 400 yard gong.
I know one 7 mag that has killed hundreds of elk, in different clients hands.
I don't think the gun is offered as an option in the hunt, but I guess it works better for everyone?
