Relationship between TCRM and hitrate

According to my stats, a tcrm battle on average contains 1194.5213333333336 shots, ignoring 1.0 bullets, and given the hitrate as x, you get tcrm score = 1194.5213333333336 * 16 / 35 * x = 546.0668952380953x

for 100 tcrm score, the expected hitrate is 0.18312774656738373 and for 0.001 improvement in hitrate, you get 0.001 * 546.0668952380953 = 0.5460668952380954 improvement in tcrm score.

If the relationship is mostly linear, then you can just expect that, 0.55 diff in tcrm indicates only 0.001 in hitrate.