subsonic question

[willsnipe]

I was just set to buy a 300 whisper reamer, then see 300 AAC blackout everywhere I look. They look to be the same in all but name, but I can't find dimensional drawings on the aac round. Can anyone here tell me if my assumption is correct? I'd sure appreciate the help.

 

[dzhitshard]

Re: subsonic question

there's a very informative thread on 300 AAC on page 2.
They do not appear to be one & the same dimensionally.

 

[Austan]

Re: subsonic question

From what I could gather, the 300BLK is 4 thou longer in the headspace than the whisper and has a longer throat.

 

[willsnipe]

Re: subsonic question

Thanks, Guys.

 

[Austan]

Re: subsonic question

Borrowed image from one of the other threads. Cant find a whisper drawing right now.