Hmmm...
That doesn't sound very fun.
I see to dimly recall a rifle that you could reload when the bolt was open by simply feeding shells down through the receiver. But now that I try to remember exactly where I saw that, I can't.
I wonder if you could lop the bottom off a mag, drop in the shells, and the put the bottom of the mag (with the spring) back in place. Nah, too much work.
Well, it was a thought.
Thanks for the input.
K. N.