Ok, I dont really know how to explain this, but I will try. I bought a gun rest a while back, (dont remember what kind it is) it has the bubble to level it from side to side, but nothing from front to back. It has the sling in the back so I can set the gun right in it and shoot off that, with the small bag on the front. It has adjustments from side to side, and one in the back to adjust the level from front to back. Ok, question is do I set the gun in there so it is level from front to back, or doesnt that really matter. In my mind, if I sight the gun in with the gun on the rest, and have it so it is level front to back, it might be different when I shoot off hand. I know this is kind of hard to understand, and is probably a stupid question, but I am really new to all of this. I am going to the range today after lunch, so any help before that would be great. Thanks a ton!