| Here are some dimensions of a typical 12ga. shotshell. Always
use a quality dial caliper when measuring your shotshells. Length may varydependent upon
shotshell manufacturer. Dimensions shown are for maximum, uncrimped overall length. If you
find it necessary to adjust the collet size die, try to shoot for a middle of the road
measure of the brass base. |
Click on image to see larger picture
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Wad Seated Depth
When developing loads for shotshells be aware of your "wad
seated depth." Here's a reference guide for the popular wad and shot weight used
presently.
Example, if your loads currently use a wad for 1 1/8 oz. of shot and you decide to
reduce your shot weight and switch to 7/8 of an ounce wads, readjust the shot dispenser
tube via the body collar adjustment screw. Clockwise rotation raises the shot dispenser
tube and decreases the depth the wad is seated into the shotshell. Counterclockwise
rotation lowers the shot dispenser tube and the wad will get seated deeper into the
shotshell.
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Wad & Shot |
Approx. |
1.12 - 1.20
1.30 - 1.35
1.45 - 1.50 |
1.12 - 1.20
1.30 - 1.35
1.45 - 1.50 |

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Finished Round Information
Your loaded round length will vary due to loads used, type of wads, and brand of
shotshells.
We found that a majority of the Winchester ammo loaded fell toward 2.30 - 2.325
length.
The Remington and Federal ammo loaded measured 2.33 - 2.350 overall length.
Always use a reputable loading manual when reloading shotshells.
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