HW use a true square thread form.
they offer full thread or interupted
so only like 60 deg. turn to remove
the barrel.
Thanks Starman, that makes sense, similar to WR I guess.
I have owned and own takedowns with normal thread and not as good. I have an early (1913) H&H 375 Belted Magnum magazine rifle on a Magnum Mauser action, takedown in the barrel unscrewing as distinct to the latter H&H method of removing the barreled action from the stock. Nice rifle but not as good as square thread for longetivity.
Cheers