I just thought i would report back a 4oz injector can probably shoot at least 2 or maybe even 3. It is a fairly thin bait witch might make rigging a problem. But that said the first three casts with this bait got bit but I was using a 4/0 jig so even with a sketchy rig it worked. the fish just had to get unlucky to get the hook.
I'll have a proper screw lock rig next time out.