Originally Posted by 300remum
you mean that i'm right and that i should leave it there and practice?
english is not my first language so, not sure what you meant.
so far i had always improved my loads by playing with aol after
finding a charge. a couple of time i went from 1.5" group to .6-.7"
if i then played with powder charge it didn't change much.
so i tought that this time i actually stumble on the good aol on the first try
out of luck
OK that explains a little of the writing, Where are you from? Guys for his sake lets not use acronyms anymore or at least explain them for him, and try to avoid using slang, or references. I speak a second language and I know how hard this can be. Your typing "aol" we use "COAL" case over all length, most of us use a culminator to measure this from the bullets olgive as it gives a more consistent length. I have to say you load work up is very organized which is great. I think the over all them of what the guys here are trying to tell you is only change one thing at a time.
Shooting technique is very important to consistency. Here are a few key things to remember. I shoot off the ground from the prone supported position, you will need a solid front rest (sand bags or bipod) and a solid rear rest. They sell stuff for both but you can make them just the same with socks, sand etc. Body position is key and I am going to be talking only about the prone position. Your body and the rifle must make a strait line from the muzzle to you heal, we call this "getting strait behind the rifle" it lets the recoil forces travel in a strait line. Next when aiming the rifle at the target you should adjust it (on you rest) so that your not holding it there, you body should hold it there. If your twisting it of putting pressure on it from your hands then your effecting it. Next is trigger pull and hand position, I am right handed so my left hand is tucked under the but of the rifle, my rifle hand it the only one that moves the left never leaves the rifle until I am done shooting. The right hand loads the rifle, operates the bolt, and makes adjustments to the scope. Hand position on the rifle is thumb strait along the side of he stock, trigger finger is placed so that the middle of the tip of the index finger is on the trigger, you must not allot any other part of the index finger to touch the stock. This insures that the trigger will be pressed strait back to the rear with out imparting any lateral force into the rifle.
I have a saying I go over in my head every time I pull the trigger "BRASS" Breath, Relax, Aim, Slack, Squeeze. Also remember to time your shots with your breath, breath in then out 3 to 4 times. Let all the air out of your lungs then brake the shot, if you find your holding you breath for more than 6 or 7 seconds STOP and start over. At the 6 or 7 second point your body starts to feel the effect of oxygen deprivation and will start to shake.