All shot with #7.5 1-1/8 oz. field loads at 10 yards. Targets are poor-man IPSC style fabricated from leftover grocery bags.

Rem. 870 with 18-inch fixed cylinder choke barrel

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Rem. 870 with 20-inch fixed improved-cylinder choke barrel

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Rem. 11-87 with 21-inch interchangable ("rem choke") improved-cylinder choke barrel

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Rem. 11-87 with 21-inch interchangable modified choke barrel


There is hardly any difference in spread between the cylinder and improved-cylinder barrels on the 870, despite not only the different chokes but 2-inch length difference. I was expecting more.

There is a huge difference between the improved-cylinder on the 870 versus the 11-87, even though it's the same type choke and only a 1-inch length difference. I was expecting them to be the same.

There is hardly any difference between the improved-cylinder and the modified on the 11-87. I was expecting more.

Here are the caliper-measured choke diameters (I no longer possess the 870 cylinder barrel):

870 IC -- 0.724"
11-87 IC -- 0.720"
11-87 M -- 0.715"



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