The Varmint Hunters Association Members Only Forum
Publishers of: The VARMINT HUNTER Magazine®
The Best Club! The Best Magazine!
Members Login
Username 
 
Password 
    Remember Me  
Post Info TOPIC: 243 win and 243 ackley improved?


Shooting Star

Status: Offline
Posts: 1319
Date:
243 win and 243 ackley improved?
Permalink  
 



  I was wondering what is the diffrence between the 243 win and 243 ackley improved? I know that you can shoot 243 win ammo in the 243 ackley improved and it will fire form the case then you use the cases with the ackley dies and reload.But are 243 ackley improved rifles factory rifles or do you have to have the chamber wallered out or what? Also what is the ballistic diffrence in the same peice of lead ,say a 90 grain nosler bt? Thanks for imput on this post! smoke.smile

__________________

"God is Great , Life is Good, And people are Crazy"



Senior Member

Status: Offline
Posts: 479
Date:
Permalink  
 

the ackley improved is a wildcat, so you wont find it in a factory rifle (maybe a cooper). the AI gains 100-200fps, thats the only real difference.

__________________


Life Member

Status: Offline
Posts: 1601
Date:
Permalink  
 

  Smoke, Lefty_O is right there, not really all that much difference in preformance. The difference in the case is that the sholder angle is steeper, the Ackley Improved changes the sholder angle on the 243 from 20 Deg. to 40 Deg. I think on all Ackley Improved chambers 40 deg or an 80 Deg included angle is common. This is where the added case capacity comes from as with all other ackley improved chambers. The cases can last longer because you have little to no case stretch when firing. The brass can't flow around that steep sholder angle very well. A lot of the ackley chambers are tight necks as well and require turning the case neck walls thinner. My 243 Ackley has a .270 neck. On my loaded round the neck measures .266-.267. The turned necks wall thickness is .0115. All this is to hold the bullet in as perfect alignment with the bore as possible. A tight neck chamber rifle in the hands of someone who doesn't know it can be dangerous. I wonder why the bolt was so hard to close?(KABOOM)

  Fact:  In the United States, you are more likely to be killed by a bee sting than a shark attack. 

   Personally I'd prefer to take my chances with the bee.
 
                                               
 Beekeeper

-- Edited by TJVarmint at 13:39, 2008-05-22

__________________

Some days you're the Top Dog and some days you're the squeaky toy.   




Shooting Star

Status: Offline
Posts: 1319
Date:
Permalink  
 

Thanks for the info guys! smile

__________________

"God is Great , Life is Good, And people are Crazy"



Life Member

Status: Offline
Posts: 1601
Date:
Permalink  
 

Smokepoles Fact:  Some lions mate over 50 times a day.

I think I may have come pretty close to that a time or two when I was about 19. biggrinbiggrinbiggrin


__________________

Some days you're the Top Dog and some days you're the squeaky toy.   




Senior Member

Status: Offline
Posts: 479
Date:
Permalink  
 

gotta be sore as heck the next day!!!!!

__________________


Life Member

Status: Offline
Posts: 1601
Date:
Permalink  
 

Lefty o wrote:

gotta be sore as heck the next day!!!!!



I have little doubt about that Lefty but don't remember for sure. 19 years old has been too long ago.  cry



__________________

Some days you're the Top Dog and some days you're the squeaky toy.   


730


Member

Status: Offline
Posts: 2
Date:
Permalink  
 

Smokepole - I don't have a 243AI but do have 2 30-30AI's. Brass does not seem to stretch, increase of app 200 fps and no one else around my parts has one!wink.gif

__________________


Guru

Status: Offline
Posts: 802
Date:
Permalink  
 

I have a .243 that I shoot occasionally,and ordered a .Ackley improved in Heavy varmit,28"+Vais muzzle break.I should have i within a few weeks,from Hart.Mine will also have a .270 neck,so I am turning necks for a loaded round of .267 +/-.001.I asked to have the chamber cut, so virgin brass will be a slight crush fit on the shoulder.I don't want it loose,to require me to seat the bullets into the lands, for fireforming.I also expect to work up varmit loads on the virgin 243 brass to shoot PDs and fireform at the same time.Ackley designed his chambers to shoot factory ammo for fireforming,and they may shoot very accurately.Except for neck turning,my rounds will be just like my parent .243 rounds.I'll use the fireformed cases from working up varmit loads to see what I can come up with, in AI,for the Sie 95gr Match Kings.

__________________
Page 1 of 1  sorted by
Quick Reply

Please log in to post quick replies.

Tweet this page Post to Digg Post to Del.icio.us

Counter Installed on June 12, 2007