12 Gauge Shotgun Shells: Sizes, Loads and the Law
A shell too long for your chamber still fits — and raises pressure. Shot sizes, published loads, and what federal law actually requires for waterfowl.
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12 Gauge vs 20 Gauge: More Shot, Not More Pressure
The 20 gauge is rated to a higher pressure than the 12. What the bigger bore buys is payload — 29% more shot at the same speed, on the same load.
