Re: How start working up load?
everyone has their own system. Mine is to pick a bullet & powder start at sugested start with the bullet touching the rifleing. Increase by .5 grn.
To save driveing time, (I also have a 45 minite drive to the range) I load 3 of each and mark them. At the range I put up the required amount of targets right to left use min power on my scope and 3 rnds per target.
Each of the targets is marked with the load data I do not use a spotting scope and I do not approch the targets untill I have fired all of the rounds. Of course I always check for preasure problems before going to the next set of 3.
The tightest group wins. After that I use the best group load and load 3 at 10 off the lands, 3 at 20 thou off, and 3 at 25 thou. When I go back to the range I use the same system.
Doing this I have found that for 150 grn sp I use IMR7828 (67.0grn), cci mag primer set at 10 thou off the lands. For 175 grn sp I use RL22 (60.0grn), cci mag primer set 25thou off the lands. For varments I use 150 grn RN IMR3031 (48.6 grn) win std primer and the bullet is over length so that it seats on the lands.
I use these in a Savage 111 7mm R.M.