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do all choke tube numbers match up?


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There are standards, but not all makers follow them explicitly.

.703 is smaller, but that doesn't mean yours will pattern more tightly.

Other factors such as the length of the forcing cone and backboring may apply to different guns.









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All chokes have the same constriction( cyl =0 to full =.035"). The difference is all bores are not the same. The standard for a 12 ga. is from something like .725 to .740" Early SBE was a tight barrel & the Browning Gold is looose barrel. New SBE II is in the middle.

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