I have a semi auto 12 ga shotgun with a 5 round and 10 round magazines
When I use most low base shells the shotgun doesn't always cycle. High base shells, never an issue. How can I tell from the ads if they are high base or low base?

Question

I have a semi auto 12 ga shotgun with a 5 round and 10 round magazines 
When I use most low base shells the shotgun doesn't always cycle.  High base shells,  never an issue.  How can I tell from the ads if they are high base or low base?

James G. · Answer

Hi Bryan and welcome. These are absolutely High Base Shells: https://southerndefense.com/clever-express-12-gauge-2-3-4-inches-9-pellet-00-buckshot/  --------- Cheers, stay safe and enjoy!

Randy I. · Answer

instead of the base you need to look at velocity or dram equivalent at 1425 fps these will work your gun with no problems. Hi brass was used when the hulls were paper to keep fast loads from burning through the hull. It has become a marketing gimmickand is not necessary

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I have a semi auto 12 ga shotgun with a 5 round and 10 round magazines When I use most low base shells the shotgun doesn't always cycle. High base shells, never an issue. How can I tell from the ads if they are high base or low base?