winter paint storage

Most zip lock bags, and especially the bags paint is shipped in, are not air tight. Air is actually entering and leaving those bags, but at a slow rate. A true vaccuumed bag will act more like a panel than a bag- the portion of the bag not wrapped around something basically become almost perfectly joined at a molecular level, making it one solid piece. The heat from the air being vacuumed out also helps bond the plastic, which is why lower-heat plastics are used instead of tough plastic that forms the A-5's grips and whatnot. It is the reason why when you cut a corner off a true vacuumed sealed bag, it does nothing. The goal, however, is that the object being stored also undergoes the same feat. Meat seals well due to it's flat shape. Paintballs, however, will leave pockets of air between the round balls and affect the true vacuum's ability. Sure, it will seal it better than a zip lock bag, but still not as perfect as it would with anything else.

All you really would need is silica gel packets and a moisture-absorbent powder, then an "air-sealed" bag such as a zip-lock bag. The silica gel will make sure the balls don't rot (oxygen absorbent- bacteria eating the shells need O2 to breath, this takes it away). The moisture absorbent powder is obvious, to readily absorb moisture from the air (low absorbency- things like salt would dry the paintball shells and make then brittle). And an air seal to ensure they are the same, if not better, than when you stored them.

Of course, this is utterly useless. You'll waste so much time storing them (unless you have A LOT of left over paint) that it would be cheaper and easier to blast the remnants of them out on your last day of play. Or empty them at at your house, SAFELY!