It doesn't work quite like that, since the "length" (2.75") is the length before loading. Finished size is less, and varies a bit from brand to brand.2.75x7=19.25
19.25/1.75=11
I have watched some Mericans stuff 11 rounds into tubes built for 7. Which is awesome!

Anyone actually have any experience with these things? I saw them mentioned in an older thread where someone cited feed problems for a pump-action gun, but that was all heresay.




























