Long Range Hunting Online Magazine


Go Back   Long Range Hunting Online Magazine > Rifles, Reloading, Optics, Equipment > Rifles, Bullets, Barrels and Ballistics


Reply

Where is my pressure coming from?

 
LinkBack Thread Tools Display Modes
  #8  
Old 09-27-2012, 09:42 AM
B23 B23 is offline
Gold Member
 
Join Date: Oct 2008
Location: Spokane, Wa.
Posts: 932
Re: Where is my pressure coming from?

Mike, take this for what you want but quickload shows your 96.5gr load as over 76,000 PSI if your COAL is 3.600 if you COAL is a bit longer say 3.750 it's still pretty hot load at 70,000 PSI. Max PSI is shown at just a little over 63,000.

Have you ever thought of using a little slower powder like H4831sc? QL shows H4831sc giving within 75 fps of your H4350 load but with less pressure.

Sounds like everything your doing is right but your load is just a little on the hot side. Hope this helps.
Reply With Quote
  #9  
Old 09-27-2012, 09:56 AM
Platinum Member
 
Join Date: Dec 2009
Location: 4422′44″N 1082′35″W
Posts: 3,879
Re: Where is my pressure coming from?

Quote:
Originally Posted by B23 View Post
Mike, take this for what you want but quickload shows your 96.5gr load as over 76,000 PSI if your COAL is 3.600 if you COAL is a bit longer say 3.750 it's still pretty hot load at 70,000 PSI. Max PSI is shown at just a little over 63,000.

Have you ever thought of using a little slower powder like H4831sc? QL shows H4831sc giving within 75 fps of your H4350 load but with less pressure.

Sounds like everything your doing is right but your load is just a little on the hot side. Hope this helps.
B23, my oal is 3.8, and I am considering just starting over with a new powder. I think I will probably try something like H4831sc. But I would first like to figure out what the heck is going on with this load. It is possible I suppose that the change in weather and humidity is to explain for the changes in pressure signs. I know its a very hot load. Thanks for running the number for me!
__________________
Mike

Anything less than overkill is underachievement!

" Real elk guns start with the number 3 or bigger and blow two holes, one in and one out." - My Dad
Reply With Quote
  #10  
Old 09-27-2012, 09:58 AM
Gold Member
 
Join Date: Sep 2002
Location: Illinois
Posts: 836
Re: Where is my pressure coming from?

See it's already been suggested.
Reply With Quote
  #11  
Old 09-27-2012, 10:03 AM
Platinum Member
 
Join Date: Feb 2007
Location: Townsend, Montana.
Posts: 7,816
Re: Where is my pressure coming from?

I agree that H4350 is a little fast for the case. I too would change powder. I am guessing the suspected rise in pressure is from case expansion durring previous firings and your case is now fitting the chamber tighter even though you are full sizing.

Jeff
__________________
Reply With Quote
  #12  
Old 09-27-2012, 10:10 AM
B23 B23 is offline
Gold Member
 
Join Date: Oct 2008
Location: Spokane, Wa.
Posts: 932
Re: Where is my pressure coming from?

Playing with QL, RL22 and 7828ssc look like they both would get you about the same FPS but with less pressure.
Reply With Quote
  #13  
Old 09-27-2012, 10:13 AM
Platinum Member
 
Join Date: Dec 2009
Location: 4422′44″N 1082′35″W
Posts: 3,879
Re: Where is my pressure coming from?

B23 how dense are the powder charges?
__________________
Mike

Anything less than overkill is underachievement!

" Real elk guns start with the number 3 or bigger and blow two holes, one in and one out." - My Dad
Reply With Quote
  #14  
Old 09-27-2012, 10:25 AM
B23 B23 is offline
Gold Member
 
Join Date: Oct 2008
Location: Spokane, Wa.
Posts: 932
Re: Where is my pressure coming from?

W/RL22 103.5gr is 105% fill capacity and show 64,000 PSI

W/7828ssc 103.5gr is 103.8% fill capacity and also 64,00 PSI

Your H4350 load of 96.5 and 3.80COAL was shown as 101.6% and 68,000 PSI
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes


Similar Threads for: Where is my pressure coming from?
Thread Thread Starter Forum Replies Last Post
.308 VTR coming together NONYA Long Range Hunting & Shooting 7 01-04-2013 10:54 PM
338 LM coming together! Korhil78 Long Range Hunting & Shooting 4 05-27-2012 08:59 PM
7 wsm, Coming or Going? The Duke007 Rifles, Bullets, Barrels and Ballistics 14 09-24-2011 01:18 PM
Coming to TN maccer South 0 06-20-2011 07:23 AM
ACI keeps coming loose Alan Griffith Long Range Scopes and Other Optics 3 09-14-2007 08:33 PM

Current Poll
Do you archery hunt for elk?
YES - 32.12%
62 Votes
NO - 52.33%
101 Votes
Not yet, but I plan to. - 15.54%
30 Votes
Total Votes: 193
You may not vote on this poll.

All times are GMT -5. The time now is 03:28 AM.


Powered by vBulletin ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Management Powered by vBadvanced CMPS
All content ©2010-2014 Long Range Hunting, LLC