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Author Topic: 280AI vs 280Improved 40 degree  (Read 864 times)

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Offline weasel

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280AI vs 280Improved 40 degree
« on: November 24, 2007, 06:31:20 PM »
Are these the same cartridge?
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Offline Nobade

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Re: 280AI vs 280Improved 40 degree
« Reply #1 on: November 25, 2007, 05:06:32 AM »
Most of the time. Normally the Ackley Imp rounds use a 40 deg. shoulder, but there are versions out there that people call AI that aren't really an Ackley design, but something else.
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Offline sdb777

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Re: 280AI vs 280Improved 40 degree
« Reply #2 on: November 25, 2007, 08:19:13 AM »
Quote from: weasel on November 24, 2007, 06:31:20 PM
Are these the same cartridge?

Yup!  Unless someone made the reamer incorrectly?





Scott ( :o) B
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Offline iiranger

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MAYBE??? Re: 280AI vs 280Improved 40 degree
« Reply #3 on: November 26, 2007, 09:36:57 AM »
Mr. Ackely seems to be remembered for cartridges that were mainly 40 degree shoulder and this is a strong possibility. BUT Mr. Ackley worked with many designs, he was an engineer, and some were 28 degrees and some 30 degrees and ??? so you need to be very careful. If you had another shoulder and tried using the 40 degree dies, you might ruin some cases. Don't see great danger... but it is a good question that deserves a good answer. Cast the chamber and be sure. (Cerrosafe or sulphur easy).  luck.
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