Well, I normally used to carry 9 mags in my webbing plus the mag fitted to my rifle or 600 rounds of link plus 200 fitted to the gun (when operating the Minimi LSW). If required (when undertaking recon duties normally) I could have carried an additional 6 mags in chest webbing, that I attached to my normal webbing. I seldom ran out of ammo... In relation to the packs, do you mean to say you undertake section or platoon (or even Company) level attacks with your packs on? I cannot help but think your freedom of movement would be significantly lessened if you fight this way, let alone urban type terrain. You simply can't run properly if you've got a 50 pound pack hanging off you. If you don't run during attacks etc you're going to die. I don't agree it's a matter of training either. The packs aren't thrown away for good. They're dumped temporarily to allow you to survive the immediate situation. The typical Australian Army soldier carries sufficient water, rations etc to survive for 24 hours in his webbing, along with emergency first aid kits, camouflage cream, compasses, maps, NVG's etc. The ammunition carried is normally sufficient for any immediate contacts, attacks etc allowing you to dump your pack... If you don't carry ammo on you so that you can access it when you need it, I fail to see what benefit you would have by carrying it at all. Do you mean to say that you open your packs up in the middle of a contact to recover additional ammo? If so, then I really think your fire control needs to be tightened up somewhat or carry more ammo in your webbing. As I mentioned I used to carry up to 300 rounds of 5.56mm ammo for our rifle or upt to 800 rounds of link ammo for the Minimi. This always proved sufficient for attacks or immediate contacts. We'd normally "re-org" at the end of the contact when conditions allowed, re-gain our packs and refurbish our ammo. I can't see that your army (Canadian I think?) would be any different.