JeffinPTC
Senior Member
New from 21 Dec.
It doesn't say if these loads will cycle or lock back the bolt though.
I haven't had luck with H110 cycling a subsonic load from the Hornady data, even though to Hornady #10 says it will. Several FTFs.
Evidently AA1680 is the best choice.
https://sierrabulletsblog.com/2017/12/21/sierra-bullets-300-aac-blackout-load-data/
PDF pages for your Sierra Manual 5. They print as 2 pages per sheet and didn't print so you could cut to fit 2 sided. recommend one side only
https://sierrabullets.files.wordpress.com/2017/12/300-aac-blackout-12212017.pdf
It doesn't say if these loads will cycle or lock back the bolt though.
I haven't had luck with H110 cycling a subsonic load from the Hornady data, even though to Hornady #10 says it will. Several FTFs.
Evidently AA1680 is the best choice.
https://sierrabulletsblog.com/2017/12/21/sierra-bullets-300-aac-blackout-load-data/
PDF pages for your Sierra Manual 5. They print as 2 pages per sheet and didn't print so you could cut to fit 2 sided. recommend one side only
https://sierrabullets.files.wordpress.com/2017/12/300-aac-blackout-12212017.pdf