I've been using those little red tubes with the orange caps that I buy at Dixon Muzzleloading Shop in Kempton, PA. They're made by Rightnour Manufacturing Company in Mingoville, PA, otherwise known as RMC. The product number is ML046. They work really great as they are "pinchable" so that you don't spill any powder as you're pouring it into a revolver cylinder. Each red tube comes with an orange cap that's easy to see in dim light. A 5-Pack of these tubes sells for $4.50, and Dixon's will do mail-order too. Each tube will hold at least 100 grains of powder.
I store my pre-loaded tubes in cigar boxes marked with what the charges are for, I.E.: Rifle, revolver, charge size, etc. I also have an empty cigar box for all of the empties, so that there's no chance of a Dry-Ball!
Utilizing these tubes is the only way to go, especially with the colder weather approaching. No more frozen hands & fingers weighing & pouring each chage from the measure!
I "Throw" all of my charges at my kitchen table in good uniform light so as to enable me not to vary the amount of powder in any one tube. All it takes is a couple of paper towels' width that are still together, then placed onto my plastic tablecloth...the Black shows up real nice and you can fold the paper toweling and pour any loose powder back into your Goex can!
What ever tubes you decide to buy, once you use them, you'll never do anything else! They work that great! I have 130 of them as of Monday! Reason being that the NRA Pistol Qualification course requires 13 shots on each of 2 different targets, not including sighters. That's 52 tubes just for my son and I to shoot a pistol qualification course. Then we would switch to rifles for the rest of the competition. More tubes means less work measuring charges during a match!
Have a good time with your tubes!
Dave