Thank you very much for the kind words and response to our Mutha Ruka gentlemen.
Sizing of packs is much like temperature ratings on sleeping bags. BE CAREFUL!!
At Drop Zone we always under rate our sizing and performance claims simply because I don't need some angry infantry soldier half my age punching me in the beak after a disappointing experience with my gear.
Many pack manufacturers fill their packs with dog biscuits, barley, small rubber balls or whatever, then pour the contents from the pack into a large box with graduations in liters and or cu. inches marked on it in an effort to establish capacity. This method works and is generally accepted in the industry. However the contents tend to push the pack's fabric to its dimensional limits, filling in every nook and cranny, in effect increasing its measured capacity, usually for marketing purposes.
This would be an accurate measurement method if the soldier were to carry loose 9mm ammo!
At Drop Zone we used the measurements posted and calculated the capacity mathematically. Our measurement does NOT include the spindrift collar with the hood extended.
I am not claiming that either method is right or wrong. I just mention it so you, the users, are better armed to make informed purchasing decisions.
We have an original Brit Bergen on temporary display in our showroom right now, sitting beside our Mutha Ruka. The Bergen is indeed slightly smaller ???
I hope this helps to clarify some things.
Kind Regards
Brian Kroon