As I have said Bh leaves a 'crud ring' also - it is just inside the breech plug... even you know that one.

Only if you leave the lid off for an extended time... I am shooting T7 that bought 4 years ago. and if you would do some of your famous reading you would find that T7 is encased in a film that helps reduce moisture absorbtion.

May be close to the same price where you are but it is also minus 6 onces of powder. Here the price remains $21 for 16 ounces vs $30 for 10.

Over time that adds up to a decent chunk of change... you ought to do the math sometime...