NPT should work OK. I've done about 40 turkeys with handguns and 3 things matter. 1) Bullet placement- broadside high wing butt 2)Speed- usually 15-1600 fps 3) Bullet diameter.
#1 trumps everything else. I've lost turkeys to .223, .44 Mag., .45-70. All because I didn't do #1 right (in my infancy of handgun turkey hunting).
I've taken turkeys with .375 JDJ, 6.5 JDJ, 6.5/.284, .454 Casull (30+). All of these were hit high wing butt. None moved and damage was only a 1 1/2"-2" sphere of broken bone and slight meat damage.
Do #1 right and you can get away a bunch on #2 & #3.