Brine-cured meat should have 120-200 parts per million of nitrate going into the meat.
For a home-cured ham, it is recommended to do 120PPM.
For brining, the 1 teaspoon per 5 pounds of meat cannot be used.
How much you are going to inject per pound of meat will depend on how much nitrite you are going to need per gallon.
You will need less nitrite with the more brine you inject. This is because you are pumping more into the ham itself.
When pumping 10%, it means you are pumping 10% of the ham’s weight.
Pumping 20% means you need 50% less nitrite in the brine.
This is because you are now pumping in twice as much.
Injecting more brine into the meat will not affect the sugar and salt levels.
The nitrite will be locked into the meat and after a few days the sugar and salt levels will push through and equalize along with the brine.