I just keep injecting untill it won't take any more, then either wrap in saran wrap or put it in a 2.5 gallon ziplock & squeeze all of the air out. Let it rest overnight in the fridge.
CBJ # 22569
KCBS BoD Judges' Advocate
Possibly the only judge ever to get an award from a bunch of cooks
UDS 075 UCB WSM and a bunch of other stuff.
The above post is only my opinion - mine & mine alone.