Carrying Swiss Chargers?

Hello All-
I've had my first K31 for a couple of months now and have already shot a service rifle match with it. The club I've found that does these matches has an upcoming 'urban rifle' match, which will be like a 3-gun match set up for service rifles! I have been collecting chargers, but am looking for the best way to carry securely/deploy them quickly. Contest is 50 shots, so I'll need to have ~9 chargers.
How many chargers do the original Swiss ammo pouches hold? Anyone use other surplus bandoleers?

I have a Swiss belt set with 6 ammo pouches on it, holds 72rds (two chargers per pouch). I have heard the Swiss themselves like to use the surplus Russian ammo pouches as they apparently fit the rounds pretty well.