First, get yourself some of the round toothpicks, the type that are pointed at both ends. Then get several different .30-06 loads, the rifle, etc. and head for the range. Make sure that the action screws are tight... the front one real tight, the rear one snug. Check the zero at 50 yds., then move out to 100 yds. and fire a careful 10 shot group on something like a SR-1. Use sandbags, etc. If the group is round and if it is 2 - 2.5 inches extreme spread, fine! Now, do a little experimenting. Take the toothpicks and insert them below the barrel at 5 and 7 o'clock. Try to insert them equally on both sides. This will put a bit of upward pressure on the barrel. You may very well find that this will give you better results on target. Once upon a time I had a Winchester 1917 w/ a very pitted worn barrel that would not shoot worth a flip. Handloading w/ 180 gr. flat based bullets gave better results. The toothpick method and cleaning resulted in some very nice 1.5 inch groups fired slowly and carefully from sandbags at 100 yds. HTH. Sincerely. bruce.
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