Good day everybody,
I am planning to develop loads for my new over-under rifle in 9.3X74R. I know the original load for which the barrels have been regulated so the plan is to approximate that. I will be using Woodleigh 286 grain soft-point bullets and N-540 or N550 powder. The brass will be RWS and primer Federal 210. Now my question: How many rounds should I make for each charge? 2 or 4 or 6? In what order should I fire the barrels?
I am thinking making 4 rounds at each specific charge. Fire two rounds in first barrel and second barrel. Note point of impact. Load again and fire two more shots. Now a group of 4 shots will be formed on the target. The above process will be repeated for 3 different charges each 1 grain apart. The charge that made the tightest group will be selected.
Is there a better way to find the proper load that regulates in the rifle?
Thanks,
-Omid