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Posted: 3/17/2011 5:36:03 AM EDT
[#1]
It's been improved by Ackley????
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Posted: 3/17/2011 5:38:04 AM EDT
[#2]
What's the difference between a duck?
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Posted: 3/17/2011 5:38:12 AM EDT
[#3]
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Posted: 3/17/2011 5:38:26 AM EDT
[#4]
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]
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Posted: 3/17/2011 6:20:23 AM EDT
[#5]
If it exists (I've never heard of it), it has less case taper and a sharper shoulder for more capacity.
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Posted: 3/17/2011 6:22:53 AM EDT
[#6]
The closest thing to an Ackley improved 50 bmg, would look like a .416 Barrett with a 40 degree shoulder.
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Posted: 3/17/2011 6:29:32 AM EDT
[#7]
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.
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Posted: 3/17/2011 6:31:39 AM EDT
[#8]
does anyone have a link for some of the 50BMG ackley dies. I have a friend looking for some. Im not having any luck.
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Posted: 3/17/2011 6:42:36 AM EDT
[#9]
Quoted: 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. |
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Posted: 3/17/2011 6:51:53 AM EDT
[#10]
Quoted: 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.Quoted: 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. 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. |
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Posted: 3/17/2011 7:07:53 AM EDT
[#11]
Quoted:
Quoted:
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.
Quoted:
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. 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. |
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Posted: 3/17/2011 8:22:00 AM EDT
[#12]
Quoted: Quoted: Quoted: 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.Quoted: 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. 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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