[Johnny_Cipher]

Not until they make one big a$$ magazine or a belt fed variety.

A 1100-round magazine wouldn't be much of a problem. The stepladder you'd need to carry around to refill it however ...

[Billthedrill]

How strong do you figure your thumb would have to be to get that last cartridge into an 1100-round mag?

Smart people, of course, would save the spring from overcompression by only loading 1099 rounds...