Loosen the forend band enough so the forend has just a bit of play back and forth. The screw goes through a groove on the bottom of the barrel which is usually a bit wider than the screw. If it is tighten up enough to hold the forend tight against the receiver there will be vertical stringing. If you tighten up the front band in a way as to not have pressure against the receiver your moving the the right direction. Some rifles shoot better with three or less rounds in the magazine.

Dog I rescued in January

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