Hunters — Determine Your Cold Bore Point of Impact (POI)
Photo of Browning X-Bolt rifle courtesy Browning.
Hunting season is coming up, so it’s time to get your rifle squared away. You’ll want to zero that rifle before the hunt, and you need to know how your shots will impact with a cold barrel.
Commonly, hunters won’t have the ability to fire one or two fouling shots before heading out on a hunt. Therefore it’s important that a hunter understands how his rifle shoots with a “cold bore shot”. Both the point of impact (and possibly velocity), may be different with a cold bore than with a barrel that has been warmed and fouled with a series of shots. In this video from the U.S. Army Marksmanship Unit (USAMU), you’ll learn how to determine your cold bore point of impact (POI) for a rifle that just been cleaned, as well as the cold bore POI with a barrel that has already been “fouled in”.
SGT Joe Hein of the USAMU shows how to plot cold bore POI with both a clean bore and a fouled bore. Note that the “cold bore” shot from a fouled barrel was closer to the follow-up shots than the cold bore shot from a clean barrel. This isSource: Accurate Shooter