Federal NT brass 　 Sorting range brass I came across some federal NT head stamped brass this brass also has a knurl about halfway up the case, I have some federal brass with just the knurl and no NT head stamp, they both have slightly larger flash holes then the regular federal brass. (And sure burns clean, looks like new brass inside after firing) Does anyone have experience in reloading this brass? Does the difference in flash hole size make deference in how you reload? Wanna kill these ads? We can help!