Thanks to those that pointed me to "Lanes Tubes". I've been searching and trying different kinds of tubing trying to come up with one that would hold both BH and different sabots. This is so far is the best tube that I have found that does not allow the powder to get by the sabot. The tube was loaded and placed under water for over 24 hrs. Stayed dry inside.
The tubes are loaded with 77gr weight(110 vol). The double tube pic has a 290gr Barnes TMZ and a 300gr Scorpion PT Gold w/ Havester Crushed Rib sabot. Barnes EZ-load also works in this tube. I'm not selling, only showing the tube that is giving me the results I've been looking for. Tubes come 8", 25 lot). The tubes in pic's have been cut to 4". Order the caps(50 lot) from same outfit. Plastic vs BH209 = static. I push part of a "Bounce" laundry sheet through my tubes to cut down on static, especially in the cold. Seems to work good. These are not "Lanes Tubes"