"I only said I like to know why things happen. But I think that it only makes it more interesting that you cannot ever really predict what is going to happen. Sort of a learning process which is right up my alley. I think if you could say add this and then that you will get perfectly shooting bullets then this would just be a way to shoot less expensively and even that is in my mind subject to debate. I like reading about quantum mechanics and you cannot predict things there either so I think I will be fine.'
The answer to your original question is:
The reason that the bullet impact was left of the original aiming point is due to the oscillation of the barrel as the bullet travels down it, the barrel moves around in a circle from it's central axis creating a 'whip' like motion. Your bullet is exiting the barrel at a time when the muzzle is pointing to the left of this axis, whereas your previous load was exiting when the barrel was pointing true along it's axis.
This is also known as "barrel time", this can be adjusted by moving your bullets closer or further from the "lands" in small (.005") increments until you find where the bullet exits exactly true, or in other words, where the barrel has stopped it's motion. I would not adjust your bullet to be in the lands, start .010" from the lands to begin with and move the bullet further into the case with each .005" increment. This is how you find the 'sweet spot' for your particular rifle and load. Ladder testing is the easiest and least expensive way to do this, it is explained in detail in this section of the board.
If your barrel has shown no signs of shooting to one side or the other in the past with factory rounds, then your bedding is NOT causing this. Just adjust your scope for the desired zero and go shooting!
The answer to your original question is:
The reason that the bullet impact was left of the original aiming point is due to the oscillation of the barrel as the bullet travels down it, the barrel moves around in a circle from it's central axis creating a 'whip' like motion. Your bullet is exiting the barrel at a time when the muzzle is pointing to the left of this axis, whereas your previous load was exiting when the barrel was pointing true along it's axis.
This is also known as "barrel time", this can be adjusted by moving your bullets closer or further from the "lands" in small (.005") increments until you find where the bullet exits exactly true, or in other words, where the barrel has stopped it's motion. I would not adjust your bullet to be in the lands, start .010" from the lands to begin with and move the bullet further into the case with each .005" increment. This is how you find the 'sweet spot' for your particular rifle and load. Ladder testing is the easiest and least expensive way to do this, it is explained in detail in this section of the board.
If your barrel has shown no signs of shooting to one side or the other in the past with factory rounds, then your bedding is NOT causing this. Just adjust your scope for the desired zero and go shooting!
