Thanks for that Vernon.
I now understand more fully your process.
I do a similar process 10% pump using a hypodermic needle followed by 5 days (or so) immersion. I am lucky enough to be able to get 60ml syringes so not so many refills!
That's a valid point about vac packing - I hadn't thought of that.
Your method is great particularly considering the (lack of) availability of curing chemicals where you live.
I assume from your calculations you are using the US processing Inspectors' calculations handbook guidance for your calculations. I also use this - would that the British government would issue such comprehensive guidance.
I think you are correct in your assumption that the injection has more effect than the dry cure - on its own 5 days dry cure with saltpetre for a lump of meat this size would, I guess, have little effect?
Regards
Phil