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12/6/2019 7:27:02 PM
Posted: 3/17/2011 4:35:34 AM EST
what is the difference in that over standard 50bmg?
Link Posted: 3/17/2011 4:36:03 AM EST
It's been improved by Ackley????

Posted Via AR15.Com Mobile
Link Posted: 3/17/2011 4:38:04 AM EST
What's the difference between a duck?
Link Posted: 3/17/2011 4:38:12 AM EST
Link Posted: 3/17/2011 4:38:26 AM EST
[Last Edit: 3/17/2011 4:46:04 AM EST by Stove_Pipe]
If it exists, it would be a slightly wildcatted round/chamber just like all of the Ackley improved calibers.

ETA:
http://en.wikipedia.org/wiki/P.O._Ackley
Parker Otto Ackley (25 May 1903, Granville, New York – 23 August 1989)[1] was a prolific gunsmith, author, columnist, and wildcat cartridge developer. The Ackley Improved family of wildcat cartridges are designed to be easily made by rechambering existing firearms, and fireforming the ammunition to decrease body taper and increase shoulder angle, resulting in a higher case capacity. Ackley improved not only standard cartridges, but also other popular wildcats, and was the first to create a .17 caliber (4.5 mm) centerfire cartridge.[2]


Link Posted: 3/17/2011 5:20:23 AM EST
Link Posted: 3/17/2011 5:22:53 AM EST
The closest thing to an Ackley improved 50 bmg, would look like a .416 Barrett with a 40 degree shoulder.
Link Posted: 3/17/2011 5:29:32 AM EST
There is such a creation floating around out there, as well as one that looks like an Ackley cartridge, but actually has a longer neck and the shoulder has been set back.
Link Posted: 3/17/2011 5:31:39 AM EST
does anyone have a link for some of the 50BMG ackley dies. I have a friend looking for some. Im not having any luck.
Link Posted: 3/17/2011 5:42:36 AM EST
Link Posted: 3/17/2011 5:51:53 AM EST
[Last Edit: 3/17/2011 5:56:50 AM EST by Ridgerunner9876]

Originally Posted By brouhaha:

Originally Posted By AL50bmgshooter:
does anyone have a link for some of the 50BMG ackley dies. I have a friend looking for some. Im not having any luck.

Unless you're talking about a chamber reamer, you don't need dies. Just fireform the brass.
You still need dies to reload them after fire forming. Even if you're just neck sizing, because the standard dies won't get to the base of the neck...the shoulder gets in the way.

The marginal difference you're going to get doing the AI to a .50bmg is really not worth it, imho. If you really wanted to hot rod it, drop it down to .40 and sharpen the shoulder...

AI does have a slight accuracy advantage over the traditional shoulder, too.

Link Posted: 3/17/2011 6:07:53 AM EST
Originally Posted By Ridgerunner9876:

Originally Posted By brouhaha:

Originally Posted By AL50bmgshooter:
does anyone have a link for some of the 50BMG ackley dies. I have a friend looking for some. Im not having any luck.

Unless you're talking about a chamber reamer, you don't need dies. Just fireform the brass.
You still need dies to reload them after fire forming. Even if you're just neck sizing, because the standard dies won't get to the base of the neck...the shoulder gets in the way.

The marginal difference you're going to get doing the AI to a .50bmg is really not worth it, imho. If you really wanted to hot rod it, drop it down to .40 and sharpen the shoulder...

AI does have a slight accuracy advantage over the traditional shoulder, too.



Interesting, most AI cartridges have shorter necks due to blowing out the shoulder to increase case capacity. So using regular dies isn't an issue.
Link Posted: 3/17/2011 7:22:00 AM EST

Originally Posted By PFC_Kramer:
Originally Posted By Ridgerunner9876:

Originally Posted By brouhaha:

Originally Posted By AL50bmgshooter:
does anyone have a link for some of the 50BMG ackley dies. I have a friend looking for some. Im not having any luck.

Unless you're talking about a chamber reamer, you don't need dies. Just fireform the brass.
You still need dies to reload them after fire forming. Even if you're just neck sizing, because the standard dies won't get to the base of the neck...the shoulder gets in the way.

The marginal difference you're going to get doing the AI to a .50bmg is really not worth it, imho. If you really wanted to hot rod it, drop it down to .40 and sharpen the shoulder...

AI does have a slight accuracy advantage over the traditional shoulder, too.



Interesting, most AI cartridges have shorter necks due to blowing out the shoulder to increase case capacity. So using regular dies isn't an issue.

Yes, they have shorter necks. You CAN use regular dies, BUT you're not sizing the entire neck down to the shoulder because the shoulder in the die is a shallower angle than the AI case. So, you run the neck into the die untill the shoulder just touches. You'll see a line on the neck where the die sized to. I guess it's not that big a deal, but if you're goind to all the trouble to chamber ream, fire form brass, etc you might as well have the right dies.

You could take a regular die and just relieve the shoulder, if you have a lathe.
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