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Joined: Aug 2008
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Amazing how people can bicker so much over stuff that doesn't matter. The .243 is semi-improved already. Blown out to AI the shoulder gets a lot steeper and moves forward, which changes body taper, but shoulder diameter hardly changes at all. I've no idea what that does to internal volume. The only thing that matters is what it does to how it shoots. My first 243AI was a rechambered factory 700 varmint barrel. Comparing accuracy loads......as a 243AI it shot 70's at the same speed it shot 60's before as a std. 243......3800fps. That's a good enough improvement to make it worthwhile. I've had a few re-barrels since then. Accurate velocity from a 25 & 26" barrel with 70's is 3855 + or - depending on which bullet/primer, and which gun. That combo works fine on pds or rockchucks at 500yds.

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Thanks Ackman. Looking forward to getting mine together.

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Originally Posted by longshot3
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Yeah, Steel. I want another three shot group like this!


Weren't necessarily about the tube make but about the twist. Going 1-10" twist makes as much sense as screwing together a 22/250 with a 1-14"


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Originally Posted by Swampman700
The wildcats are dead and have been for years. They offer nothing. That said if you want to waste your money make it worth your while. The AIs are no better that their factory parents.


More uninformed posting. This and the one about a 50fps increase. You must be trying to look the fool.

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Quote
the huge extractor pulling the cartridge to one side of the chamber helps too


In a 700 with the extractor capturing the case head on one side and the spring loaded ejector plunger pushing on the other, how is the situation any different?

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Steel,
This is a deer and yote rifle. For bullets up to 120gr and VLD under 100, this is the ideal twist rate. What is your reccomendation for twist rates for these bullet weights?

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I'd not go slower than 1-9", but that's because I would always want the option of running the 105 vld/amax in any rile I had put together. My lightweight 243AI (7#'s all up) is going to be running 105's as well. I've never had any issues running ligher bullets in fast twisted rifles, the fastest/lightest I've ran is the 40Vmax's in my 1-8" 22-250 and they shot great.

I just enjoy shooting longrange with all my rifles, and that's why the faster twist rates... at least for me.

Be sure and post up some results when you get it back.


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I will, and thanks for all the info. I am kinda on a budget, truth be told, and got a really good deal on a new 1/10. I think it will work for what I am trying to get(I hope)

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Originally Posted by mathman
Quote
the huge extractor pulling the cartridge to one side of the chamber helps too


In a 700 with the extractor capturing the case head on one side and the spring loaded ejector plunger pushing on the other, how is the situation any different?


The short answer is it's not a bit different, though it would require that he understood the definition of headspace and how neither extractor has an effect on the final outcome of accuracy.

I too, regrettably considering the company; would not use a Mauser for the project, but that is due to the material that needs to be removed from the critical surfaces during a full blueprint that would render the case hardening useless and in need of another shot through the furnace.

The 243AI is a neat round for sure and I've grown quite fond of mine sitting in a McMillan Classic Compact.



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Matt, it's good to see you back here!


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