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Archived [ARCHIVED THREAD] - Disassembled a 300 BO Sig Sauer 220 gr subsonic round.
Posted: 10/17/2020 8:40:40 AM EDT
COAL was 2.120.

I’ve been working on a cast load for 300 BO, and a friend gave me a round to look at. I see my bullet can be seated a lot deeper which should take care of some problems I was having. Here is one of my dummy rounds and the components of the Sig round:Attachment Attached File


I’m using 1680 powder. They are using 10.5gr of this:Attachment Attached File

Any guesses on what powder that is?

Link Posted: 10/17/2020 10:35:20 AM EDT
[#1]
Some non-cannister powder they bought to spec. by the train car load.

Link Posted: 10/17/2020 11:58:44 AM EDT
[#2]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
Some non-cannister powder they bought to spec. by the train car load.
View Quote


This.

Archived [ARCHIVED THREAD] - Disassembled a 300 BO Sig Sauer 220 gr subsonic round.
Page Armory » Reloading
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