One thing that folks don't know is that it is possible to reload a tube-style magazine as fast as you can reload a box-style magazine...
With the help of the Spee-D-Loader, good for shorts, longs, LR's or even Magnums!!
http://spee-d-loader.net/Loaders.html
Pretty simple method...
1. After clearing firearm & making safe, remove inner mag tube, then transfer it to your pinky & third finger holding the rifle...
2. Grab yer Spee-D and place the tip to your open outer mag tube & let gravity do its thing...
3. Replace mag tube, point in safe direction, release safety, and let 'er rip!!
My preferred method of carry for the Spee-D at an Appleseed/tree rat hunt is on a home-made Paracord sling...so its right at your grasp,
and you don't have to worry about dropping it to the ground like a box-mag after loading...as the sling keeps it around your body...just replug it before letting go...
with 6 tubes of 18 rounds each in the Spee-D (Old style Marlin 60/99's) plus a full mag tube to start gives you 126 rounds at your fingertips!!
For the 15 round modern Marlin 60's, that's 105!!