What degree does gas exit?

  • Thread starter dano1955
  • Start date
  • #1
1
0

Main Question or Discussion Point

Going to crown a rifle barrel and need to know what degree does gas exit?
Was told they are using this as per NASA information as opposed to a 90 degree crown.
Dan
 

Answers and Replies

  • #2
647
3
What?
 
  • #3
867
60
Your question makes no sense. I suspect you are using gun-smithing jargon mixed with very bad grammar. Could you please restate the question using common English terms and correct grammar?
 
  • #4
berkeman
Mentor
56,440
6,358
Going to crown a rifle barrel and need to know what degree does gas exit?
Was told they are using this as per NASA information as opposed to a 90 degree crown.
Dan
Welcome to the PF.

There are lots of resources to help you with deciding how to crown your rifle barrel. Google turns up lots of them:

http://www.google.com/webhp?sourceid=toolbar-instant&hl=en&ion=1&qscrl=1&rlz=1T4GGLL_enUS301US302#hl=en&qscrl=1&rlz=1T4GGLL_enUS301US302&output=search&sclient=psy-ab&q=crown a rifle barrel&oq=&gs_l=&pbx=1&fp=eed90faf6d3fee18&ion=1&bav=on.2,or.r_gc.r_pw.r_qf.&biw=1234&bih=865

It would probably be more productive for you to read through the hits on that Google search list, to look at the tradeoffs for the different crown angles and styles. As the bullet leaves the end of the barrel, the gasses will expand out at a pretty steep angle. Probably not all the way to 90 degrees (for the highest velocity flow), but probably pretty close.
 

Related Threads for: What degree does gas exit?

Replies
5
Views
1K
Replies
0
Views
3K
  • Last Post
Replies
8
Views
3K
Replies
6
Views
5K
Replies
13
Views
2K
  • Last Post
Replies
10
Views
6K
Replies
2
Views
2K
Replies
6
Views
7K
Top