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Author Topic: What's involved with AI  (Read 436 times)

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Offline Sourdough

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What's involved with AI
« on: February 08, 2005, 08:29:28 AM »
Want to get an Ultra and have it converted to Ackley Improved.  What is the process to do this?  I remember having read something about set back, what's that mean?  Rog
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Offline quickdtoo

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What's involved with AI
« Reply #1 on: February 08, 2005, 08:35:24 AM »
As I recollect, the set back is required cuz an AI case ends up slightly shorter than the standard round. Ackley improving a handi can only safely be done with a rimmed cartridge like a 30-30, etc......I think that's the way it goes, anyway!
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Offline Sourdough

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What's involved with AI
« Reply #2 on: February 08, 2005, 09:32:18 AM »
So what I need to do to get a 30-06 AI, is to order a .308 and have the chamber reamed to 30-06AI.  That would get the correct length, and solve the set back problem.  Need to check with a local gunsmith and see if he can do that.  Thanks for the info.
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What Is A Veteran?
A 'Veteran' -- whether active duty, discharged, retired, or reserve -- is someone who, at one point in his life, wrote a blank check made payable to 'The United States of America,' for an amount of 'up to, and including his life.' That is honor, and there are way too many people in this country today who no longer understand that fact.

Offline fish280

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What's involved with AI
« Reply #3 on: February 08, 2005, 10:10:47 AM »
what ya wanna do that for, dough-man? everything i've read says the '06 is the ackley chambering that benefits least from the so-called improvement, maybe 50 fps.
instead of ackley, maybe you could go the 300 howell route, which is a bit longer case but same case head as the '06. the boost is significantly over the ackley version.
check out this: www.hunting-rifles.com/casecomp.html and
this: www.hunting-rifles.com/ballistics.html
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Offline Alaninga

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crush fit of rimless rounds,,,,,,,,,,
« Reply #4 on: February 09, 2005, 01:54:51 AM »
is necessary if firing factory ammo or new unformed cases. This is another reason other than being incapable of setting the origional barrel back,,,for NOT reaming to Ackley Improved for a rimless round. The RIMMED rounds never need a 'crush fit', and only need to be properly sized for light contact of shoulder on future firings after the initial fireform shot. And,,the initial shot is headspaced by the rim of the case, and the rim recess in the barrel face. Rimmed cases are the way to go if you want an Ackley in a hinge barrel rifle. I really enjoyed my Handi 30/30AI while I had it,,great little rifle that would touch the first three rounds at 100 yds. If you want a rimless round to Ackley Improve,,use a bolt action rifle with its inherent camming ability-best for the first round fireform shot and "crush" fit. I've made and had several Ackleys,,,and the only reason I needed was,,,,," I want one".
alan in ga.
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