Board Thread:General Nerf discussion/@comment-37882578-20190815144807/@comment-27306930-20190824163128

Yes, your math appears to be correct. Nice !

As I said, I don’t have a shell style blaster, so I just assumed you could plop the shell in the breech any old way. I wasn’t really accounting for the design of the loading mech, just an estimate of how big it might be.

The “fudge factor” is to account for the stretching effect that would result from bending the line of shells into a circle by introducing a small arc between adjacent shells. It also accounts for the looseness needed to allow the mech to move freely, much like the play in a CS-35 drum.

I think we’re both on the same page. It would be somewhere between 10 and 14 inches. And realistically, probably even a little bigger to account for the follower mech and the lips. But at least we know it wouldn’t be 3 feet long 😉