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Old 04-18-2008, 01:53 PM
AlcoholicusMaximus AlcoholicusMaximus is offline
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Join Date: Nov 2007
Posts: 39
Loads that cycle a 10.5" upper

I see quite a few members here that either have a .300 Whisper SBR AR15 or have one on the way. I just received my 10.5" M1S custom barrel yesterday.It has a .082" gasport @ the pistol position.So far, the only subsonic loads I have been able to find here for this configuration are;

Noveske 10.5",.0875 port, 12.3 gr.AA2015 w/220gr. SMK

10.5" barrel, .110 port 8.5gr.AA#9 w/220gr. SMK

Noveske 10.5",9.2gr.H110 w/220gr. SMK.

I assume most would only be interested in loads that will cycle an AR15 action. I will open the port if necessary, but will try the loads above first.
Feel free to dump your AR15 SBR .300 Whisper loads here for all to disseminate. Don't forget to add barrel length & gas port dia. if possible.

Last edited by AlcoholicusMaximus; 04-18-2008 at 08:00 PM.
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