a-tip

Hi everyone. I’m trying to start working a load for a 190 grain Hornady A-Tip on a 7SAUM. I can’t find any data online for that grain. If anyone here went that heavy? Any tips or advises ? I have a 24” with 8 twist. I appreciate your help in advance.

Here is a picture of a .308" 180 Nosler E-Tip, .308" 230 A-Tip, and a .264" 153 A-Tip. With the 230 seated in a .300 Win Mag case to where the beginning of the shank is even with the bottom of the neck, I got a coal of 3.83" (if I did my "Jethro syphering" correct). If seated to 3.34" COAL...