Originally Posted by Albert Virgilio
I forgot to mention that I will be using a chronograph and I assume that where the bullets cluster I will have minimum extreme spread. The rifle has a bull barrel but I will wait at least one minute between shots. I will be loading one and not three rounds for each charge. For a tight neck chamber how much effect does the seating depth have on accuracy? I also bought a Pentax 100 mm spotting scope so I don't have to walk back and forth to the target between shots. Since I will be using the Ultimate Tripod when I varmint hunt I will also use it when testing.
I would like to thank everyone for there input.
Your clusters won't necessarily be the ones that have the closest velocity.
First, find "THE load", powder wise. Then tinker with seating depth and neck tension. If you use VLD type bullets, you may want to start your tests with a slight jam. The danger in this is finding out you gun LOVES a jam and light neck tension, but the bullets tend to stick in the chamber when you try to eject a loaded round. Not very good for a hunting gun......GREAT for a match or PD gun.
As far as your rest.....use THE MOST SOLID REST AVAILABLE TO YOU. I don't care what you will be shooting off of later, you want to test your loads, not your ability to shoot off a certain rest. Take away all of the variables you can controle!!