I use a laser bore sighter. Stuff it in the barrel , set the gun in the bags, walk out 4 paces, set the chrony up on the tripod , wave my hand around til I see a little red dot on it, set the screens so the dot is in the middle range, tighten everything down and done.
What he said! The only thing I would add is to set your rifle up with the crosshairs on your target. Then do what hunter52 said.
For under $30 it will be the best insurance and easiest way to give you peace of mind you can get. Bushnell Laser Boresighter
It will be the easiest way to determine the true path of the bullet and keep it away from your new investment.