I need some help on determining what thread size these two barrels have. They are the same size. One is a nosler m48 sporter barrel and the other is a sako a7. I need to get an adaptor to size them up to 5\8 x 24. I have a suppressor on the way. I have searched manuals to no avail. I found one suggestion its 1\2 x 28. Thanks for any help
