A friend asked me earlier today about loading a 223 Rem round that would feed/function in an AR style semi auto rifle that was close to sub sonic? Looking through my manuels i haven't came across one that even gets close. So...What is the "lightest/function" round you've loaded for the .223 Rem? be specific please. thanks

I think you will find that they aren't so much light loads as heavy bullets loaded to subsonic levels. There are several that actually sell them.

http://www.midwayusa.com/viewp...productnumber=136315
http://www.ableammo.com/catalo...hp?products_id=91045

As an example

In Theory QL will let you get down to 11-1200 with a 80-90 gr bullet using a 85-90% charge of real slow powder. Can't even begin to imagine how they would function.

Also NEAR sub sonic will have a report pretty much the same as a full load. Going super sonic is going super sonic.

How about a case full of WC860?
could be close to subsonic.

Antelope Sniper,

you could measure those loads in feet per minute...

Rich

WEll, it would be subsonic!!!

When I get a chance, I think I will try that in my AR with some 69gr NCC's....just for grins.