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Discussion Starter · #1 ·
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Will reducing a shot charge increase pressure ?

Assume a perfectly safe shotgun load double-checked in the reputable reloading manuals.

Let's say the amount of shot in the published load is 1-1/8 ounce of shot.

You reduce the shot charge to 1 ounce.

No other change -- same powder and amount, same primer, same hull, same wad.

Will reducing the shot charge from 1-1/8 ounce to 1 ounce increase pressure.

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Pressure should be lower, partial ignition is possible resulting in squeakers and/or stuck wads and/or unburnt powder in your barrel. For a change of 1/8 oz it is definitely worth utilizing published data.
 
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