http://www.bharat-rakshak.com/ubb/Forum1/HTML/003517-2.html ↑このページのちょうど中ほどにも、こんな記述が。 「9mm x 39 Russians have unveiled a new series of special purpose silenced sniper rifles. This caliber is worth evaluation. Though suppressed versions of 7.62 and 12.7mm sniper rifles may be able to do most of the tasks.
12.7mm x 99 A suppressed variant may also be developed for Special Forces.」