At the NRA Trafalgar meeting in October we hold a Mad Minute Match. You are expected to achieve 15 rounds to be in the score. Many do much better, dont try it with any weapon that uses the mauser/MAS/Springfield chargers as they are not robust enough. Rapid in the army was 15 to 20 rounds per minute and deliberate was 5 to 10 rounds and thatwas when I was in with the SLR.
The real trick is to get some good chargers, and practice loading the mag. You can do this with no bolt or mag as the rounds will fall straight through but eventually you will need to do it with live ammo. Take the firing pin outand you can do this somewhere less public than a range. mark your chargers and keep them close. brigadier Barlows Book goes into ammo preparation in some detail including which pouches to use in which order.