Long Range Hunting Online Magazine


Go Back   Long Range Hunting Online Magazine > Rifles, Reloading, Optics, Equipment > Equipment Discussions


Reply

Kirby Allen 224 AM progress?

 
LinkBack Thread Tools Display Modes
  #50  
Old 02-06-2006, 01:51 PM
Platinum Member
 
Join Date: Jun 2003
Location: Hermiston, Oregon
Posts: 2,005
Re: Kirby Allen 224 AM progress?

I am kinda curious as to what is really being said here. Am I reading it right as, RL powders will burn out barrels more quickly then say IMR powders?? Can someone please explain??
Reply With Quote
  #51  
Old 02-06-2006, 05:29 PM
Platinum Member
 
Join Date: Jun 2001
Location: Potomac River
Posts: 5,057
Re: Kirby Allen 224 AM progress?

Rem
Not much is being said at all. Roy is interested in the 224AM and decided to use the thread to discuss powder temperatures experiments in a 338 Win mag that he is going to have rebarreled. I think he is trying to perfect a method to determine which powder will burn cooler in the 224 AM when he gets one. And he is just using a gun he intends to rebarrel as the test mule for developing his methodology for selecting cool burning powders.

We pretty much had the thread hijacked until somebody un-hijacked it but thanks to Jimm it is un-un-hijacked again. [img]/ubbthreads/images/graemlins/grin.gif[/img]
__________________
The Smokin Fur Rifle Club
Reply With Quote
  #52  
Old 02-06-2006, 06:46 PM
Platinum Member
 
Join Date: Jan 2004
Location: Blackfoot, Idaho
Posts: 8,037
Re: Kirby Allen 224 AM progress?

buffalobob,

You're pretty much correct except for the determination of which powder will burn cooler. What I am attempting to do is to determine if it is possible to get "any" powder to burn cooler. I am making the assumption that a cooler barrel for a given velocity indicates longer barrel live.

What I'm finding out is why laboratories are so expensive. Mother nature doesn't provide a very good one.

Keeping the "environment" constant is difficult if not impossible.

Today was another attempt that had a couple of gotcha's thrown in my Ma Nature and one flub by yours truly.

One thing that is emerging though, is that with a load that has a little less than full of powder behind the bullet, accuracy is definitely improve in the test cartriges.

I alway very much dislike when the researcher, at the end of the report states that "more research is needed." Sounds like the project is being milked. [img]/ubbthreads/images/graemlins/crazy.gif[/img]

However in this case, that is the case, just in case your wondering why no definite conclusions are being stated. Which is the case. [img]/ubbthreads/images/graemlins/blush.gif[/img]

I have a whole new idea for tomorrow. Instead of shooting a shot then measureing, I'll shot all six shots in very rapid succession then measure the temperature rise.

Noteworty observation is that with the "check" loads, the temperature rises steadily to the maximum. With the "test" loads it increases in stages which indicates, I think, that temperature is flowing.
__________________
I may be the slowest guy on the mountain . . . . but . . . . I'm on the mountain!
Reply With Quote
  #53  
Old 02-06-2006, 07:26 PM
Platinum Member
 
Join Date: Jun 2001
Location: Potomac River
Posts: 5,057
Re: Kirby Allen 224 AM progress?

Roy

As you probably know, the "Delta" is what drives the <font color="red"> rate </font> of heat transfer. This is true for the burning powder to the barrel and from the barrel to the air. In order to control delta all through the process, the shots must be equally spaced in time and completed at the same time. Otherwise you could have alot of heat loss during the middle of the sequence and end up with the same heat transfer from the powder but a lower ending barrel temperature.
__________________
The Smokin Fur Rifle Club
Reply With Quote
  #54  
Old 02-06-2006, 07:42 PM
Platinum Member
 
Join Date: Jun 2007
Location: west of Little Rock ,Ark.
Posts: 1,271
Re: Kirby Allen 224 AM progress?

Thanks , I think [img]/ubbthreads/images/graemlins/crazy.gif[/img]

What ? you didn't like my poem of hunters lament ? [img]/ubbthreads/images/graemlins/shocked.gif[/img]

I still say the handheld laser thermometer would work , reckon you would need a helper to get the reading as close a s possible to the same point each shot . I know what , I'll bring mine and while I'm at it I'll bring the Oehler along as well [img]/ubbthreads/images/graemlins/wink.gif[/img]

Now what did I do with those car keys,

Jim B
Reply With Quote
  #55  
Old 02-06-2006, 10:43 PM
Platinum Member
 
Join Date: Jan 2004
Location: Blackfoot, Idaho
Posts: 8,037
Re: Kirby Allen 224 AM progress?

Q=uADeltaT if I remember correctly. Been awhile but.......What messed me up this afternoon was that I had a mechanical problem that took me awhile to fix and the Starting barrel temp. for the last run dropped about 11 degrees below the starting temp for the other two runs. Patience or lack thereof prevented me from warming thing back to the typical starting conditions.

This test is a bit 'basic' to be kind, but am seeing some things. I just don't know what. After today's activities I think that 3 Tcs are needed. Divide the bbl into thirds and center a Tc in each third. All with realtime recording capability.

I don't think its worth all that work though. There are other 'mechanical' problems that need to be conquered first.

I took a drive this morning, and happened to see one yote. He was booking it about 300 yds out and went to about 800 and sat down and watched. Those are the one's I'm after. Two things against me at that time. 1) I had no rifle and 2) I was on the Res. [img]/ubbthreads/images/graemlins/frown.gif[/img] [img]/ubbthreads/images/graemlins/crazy.gif[/img]
__________________
I may be the slowest guy on the mountain . . . . but . . . . I'm on the mountain!
Reply With Quote
  #56  
Old 02-06-2006, 10:44 PM
Platinum Member
 
Join Date: Jan 2004
Location: Blackfoot, Idaho
Posts: 8,037
Re: Kirby Allen 224 AM progress?

[ QUOTE ]
I know what , I'll bring mine and while I'm at it I'll bring the Oehler along as well [img]/ubbthreads/images/graemlins/wink.gif[/img]

Now what did I do with those car keys,

Jim B

[/ QUOTE ]

I'll keep my good eye out for ya. [img]/ubbthreads/images/graemlins/grin.gif[/img]
__________________
I may be the slowest guy on the mountain . . . . but . . . . I'm on the mountain!
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes


Similar Threads for: Kirby Allen 224 AM progress?
Thread Thread Starter Forum Replies Last Post
Kirby Allen 115vld Long Range Hunting & Shooting 7 12-05-2008 04:50 PM
??? for Kirby Allen wildcat General Discussion 3 03-30-2007 03:37 PM
257 Allen Magnum progress continues to another level... Fiftydriver Rifles, Bullets, Barrels and Ballistics 16 12-22-2006 12:25 AM
Kirby Allen oneshot976 Equipment Discussions 12 12-20-2005 10:23 PM
Kirby Allen Brent General Discussion 2 11-17-2005 01:57 AM

Current Poll
Do you watch outdoor shows live or by recording them?
Always recorded - 13.34%
109 Votes
Mostly recorded - 24.24%
198 Votes
Sometimes recorded - 14.20%
116 Votes
Rarely or never recorded - 48.23%
394 Votes
Total Votes: 817
You may not vote on this poll.

All times are GMT -5. The time now is 12:26 PM.


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