So I realized I don't know crap about shooting big guns. This hurts a bit considering I've shot guns since I was 10yrs old. I took my 338RUM to the range to try out my custom dial scope that leupold retrofitted. I get it dialed in by putting it on a gun rest (the kind that holds the gun and has a strap across the bottom of the butt). I put two bags of lead shot on the front legs to absorb some recoil and sight it in at 100yds. Then I decide to go prone and shoot off a bipod at 200 300 and 400... But all shots are at the bottom or below the paper... Now out of time, I had to leave and think about why the rifle shot high off the rest and low off the bipod. I imagine its because the high recoiling rifle is "stuck" on that rest and is experiencing muzzle rise before the bullet departs whereas from the bipod it is kicking straight back and the top off the butt is anchored off my shoulder vs. rocking up because the bottom is trapped by a strap? I think this issue is relative to the amount of recoil, therefore shooting a high recoiling rifle requires more skill, so where do I go to learn how to shoot right? I obviously need to sight in from actual shooting positions , but there is probably a ton to learn so that the gun recoils off my shoulder consistently also?