I wonder how to find the barrel twist
The gun was made in 1981 I did throw a doz round ball down range.
80 grains of 3 f
.014 patch
4f Pam primer
Distance 50 yards with stock sights
To find the rifling twist in your gun you will need a cleaning rod or ramrod with a cleaning jag on it, some masking tape and a sharp pen or pencil, a tape measure or yard stick and a bit of oil.
Lightly oil the patch, place it on the cleaning jag and shove it down the bore until it stops at the breech.
Wrap the masking tape around the rod so one edge is touching the muzzle.
Now, use the pen or pencil to make a mark on the masking tape that is in line with the front sight.
Now, slowly pull the ramrod/cleaning rod back out of the bore being careful to allow it to turn as the patched jag rotates with the rifling.
Watch the mark on the masking tape as it rotates with the rod. When it has rotated 180° (half of a full rotation), STOP.
Using the tape measure or yard stick, measure the distance from the muzzle of the barrel to the lower edge of the masking tape.
The distance you measure will be 1/2 of the twist your barrels rifling has. In other words, if 1/2 rotation of the rod needed to be pulled out of the barrel 24 inches your guns twist is 2 times the 24 inch measurement you read. That would be 48 inches so the twist is 1:48.
Sometimes, no matter how careful you are, the patched jag will "jump" one rifling groove, messing up your measured value so, repeat the all the way to the breech, verify the masking tape location and the alignment of the mark with the front sight and carefully pull the ramrod out of the barrel, stopping at 1/2 of a full rotation and measure the distance from the muzzle to the tape again. If the reading is different, repeat the operation again.
With two or three measurements done you should be able to choose the most accurate pair of measurements as your final answer. Don't forget to multiply the distance by 2 to get the full twist value.
