[devbro]

I had similar issue here are a few things you can try with variable success:
1. use 7.4 battery instead of 11.1. 11.1 may be too fast for bb to load
2. use a delayer, it allows for bb to have more time to load
3. use a shorter nozzle. This was the solution I got most success with.
4. sand off a bit of nozzle. It was suggested by a airsmith to me but I never tried it.