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Forum: 300 Whisper Ammo and Reloading

04-27-2008, 12:48 PM

Replies: 8

Loads that cycle a 10.5" upper

Views: 1,775

Posted By AlcoholicusMaximus

405 406 Stag Arms lower,M1S barrel with...

405

406
Stag Arms lower,M1S barrel with YHM QD 7.62. Assembled by myself.

Forum: 300 Whisper Ammo and Reloading

04-26-2008, 05:25 PM

Replies: 8

Loads that cycle a 10.5" upper

Views: 1,775

Posted By AlcoholicusMaximus

Model 1 Sales 10.5" bbl, ported .086@ pistol...

Model 1 Sales 10.5" bbl, ported .086@ pistol position,65deg.F. 850' Elev.
8.5gr AA#9 cci 450 220smk-1008 1018 1031 1007 981 991 955 958 all cycled.
8.6gr AA#9 cci 450 220smk-1026 1051 1043 1054...

Forum: 300 Whisper Ammo and Reloading

04-19-2008, 09:51 PM

Replies: 8

Loads that cycle a 10.5" upper

Views: 1,775

Posted By AlcoholicusMaximus

Opened up the gas port to .086, #44 bit. 8.5...

Opened up the gas port to .086, #44 bit.
8.5 gr AA#9 w/220gr.SMK cycled all 20 rds.from a full 20 rd mag. Velocities;
1018
1031
1007
964
955
981
991
958

Forum: 300 Whisper Ammo and Reloading

04-19-2008, 01:21 AM

Replies: 8

Loads that cycle a 10.5" upper

Views: 1,775

Posted By AlcoholicusMaximus

Well, I tried 8.5gr. AA#9 with 220gr.SMK's & CCI...

Well, I tried 8.5gr. AA#9 with 220gr.SMK's & CCI 450 primers.
1008
1069
1020
This load failed to cycle. Tried again with 8.8gr. of AA#9
...

Forum: 300 Whisper Ammo and Reloading

04-18-2008, 01:53 PM

Replies: 8

Loads that cycle a 10.5" upper

Views: 1,775

Posted By AlcoholicusMaximus

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...

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