Yeah, guys, I think the main thing to consider with TQ, that many of us may oftentimes overlook, is that the recommended amount per package instructions, is a maximum. If you use the maximum amount, you will have a faster cure (with a higher sodium content in the finished product, unless soaked in cold, fresh water for reversal of the osmosis), while reducing the amount of cure will increase the time required for a fully cured product (and give a reduced-sodium finished product without soaking).
Although I have used 50% of the recommended amount of TQ in certain situations which allow for longer curing time, and I have gone as low as 1/3 to 1/4 the recommended amount of TQ with up to 3" of meat thickness, I do allow for extra curing time, paying close attention to indications that the cure reaction has stopped, and wait longer for added assurance. Would I recommend someone with zero curing experience go about it in this manner? No. You need to have at least a rudimentary understanding of what is taking place in order to have good control over the safety of your cured product.
For my jerky, I routinely use the full-strength cure concentration per lb of meat for a faster wet-cure/marinade, and salt content seems fine, though I have also gone for less TQ on occasion, with more time to cure.
I've never had cured meats that didn't fully cure (grey interior after smoking/drying/cooking), so yes, use of reduced cure amounts and getting a full cure can be accomplished. You just need to know a bit about how it works in order to get safe and proper results. If you have a proven curing recipe from a source you can trust, roll with it. But I would not advise anyone to just toss a recipe and curing procedure together off the top of their head without a good understanding of what curing is about...that would be a recipe for disaster.
For beginners, use the recommended amount of the proper cure type for the desired product, per the package instructions...that's your best starting point, IMHO. Any time you deviate from manufacturer's recommendations or proven curing procedures, you put yourself at risk for failure, or worse, causing someone to become ill, should you fail to detect unsafe (not fully cured, when curing is due) finished product.
Eric