![]() Then you can pull the rod out and measure between the two marks around it that distance is your twist rate.īoth of these procedures are a lot simpler to do than they are to describe don’t let my descriptions make it sound too complicated. Now just push the rod in the barrel until that vertical line makes one full revolution and lines up again, and mark another line around the rod at the muzzle. With the rod and patch started in the barrel, mark a line around the rod right at the muzzle, and put an index mark on the muzzle that lines up with the vertical line on the rod. To measure twist - get a cleaning rod set up with a tight fitting patch in the barrel (make sure it can’t spin), and use a sharpie to mark a long straight vertical line up the side of the cleaning rod as a reference point, make it about 2 feet long. 36 cal round balls and fishing sinkers also work, just about any soft lead round object that’s a little bigger than the bore diameter will get the job done. A swaged lead 38 Spl bullet works great for this cartridge, like those wadcutters that used to be so common.
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