6mm-223

[buckshotbarlow]

soooo...it looks like u just get a 223AI redding type s bushing die, swap out a 6mm set and your gtg. Outside of a few fps gained, you would have an easy way to see the difference between a 223 and a 6x45AI. Other issues I saw was jump if you got the tcu route since it's throat is longer to support the bigger poison pills...

[buckshotbarlow]

looks like here are some dies...http://www.ch4d.com/products/dies/caliber-list?page=3

[buckshotbarlow]

brought the older post to the top...with this post...

i guess the 6x45ackley is the same as the 6tcu...
http://www.6mmbr.websitetoolbox.com/post?id=1770476

[IceAxe]

Is there really any significant gain in the AI for the 6mmx45? I would imagine you have to start with a new barrel as reaming an existing barrel would call for shortening the barrel at the extension and would be problematic for the gas tube length. I would love to collect some data for comparison. From an efficiency standpoint I already find the 6mm x 45 to be a rockstar.

[buckshotbarlow]

In theory, you pull off the extensions, run the reamer and reattach the extension. You're not shortening anything, headspace stays "almost" the same as a regular 223. Here's a reference on the change.
http://www.accurateshooter.com/cartridge-guides/223rem/

Taken from the link..."This is because the overall geometry doesn’t change very dramatically other than the shoulder angle. You’re not blowing the shoulder forward into the neck."
Also, you increase the case volume around 7-8%, you get appx 100-140 fps more......All the more for a faster shooter, also looking at doing a switch barrel with my 223 savage.

I have an email into bert, i think he might kick my ass over this.

[IceAxe]

I think I would like to try this on the 24" BHW barrel. Let me know if you set this up, perhaps I could piggy back the effort.

[buckshotbarlow]

i know someone who was very very naughty today....

[hghclsswhitetrsh]

i know someone who was very very naughty today....

Oo oo who was it?

[buckshotbarlow]

Oo oo who was it?

I guess Bert will find out...

[buckshotbarlow]

I think I would like to try this on the 24" BHW barrel. Let me know if you set this up, perhaps I could piggy back the effort.

We're in action,hghclsswhitetrsh just put an order in. I'm going to break down my ar's when his stuff arrives and we're going to meet at Berts. This is gonna be fun...