Converting a AR180b for hunting?

Icefire

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What is the low cost solution to convert a .223 AR-180b to a .243/6mm minimum caliber?

In quebec deer hunting need 6mm/.243 minimum...
Also, It need to be a standard round, something easy to find.

Thanks
 
Not a lot of options, not cheap ones anyways. 6.5 Grendel and 6.8 SPC would fit the magazine, but you can not buy the rounds in Canada very easily. If you want your AR180b converted you will need to take up reloading.
 
Well I'm looking at buying a AR-15 looking gun non restricted that I could take for hunting deer.

The only thing I think of is a AR-180b with a barrel swap/boring..

I like the 4 position stock on the ar15 so that would be something required for the firearm.
 
Yeah ar180b would be way enought to kill a deer, just no legal.
Reason I ask if there is a round that could fit with a lathe on the barrel like 6 or 7mm.

6PPC, .25-20, .256 magnum, 6.5 Grendel would all be shorter but a bit fatter than .223.

6.8SPC, 7mmBR, .280 British, .30 Carbine, 7.62x45mm M52, 7.62x39 M42, .32-20 Win Would also fit

Some are way shorter and would probably need mags modification but
7.62x39 is only 6mm shorter, so it would probably be good to go.
 
you could move to Ontario, we allow 22 hornet as silly as that sounds. Even though I can use my 180B for deer I use for something heavier.

Brian
 
There is a round known as 6x45. It is a .223 case necked up to 6mm., no other changes. It would be necessary to have a new barrel fitted, of course, but would be an option.
 
I have an AR barrel in 6 x 45 unfired but a little beat up. I will remove the barrel extention and you could use it for your progect. PM me and I'll try to figure out how to send you a photo!

Scott
 
Well, there you go!
Incidentally, the 6x45 is a very good cartridge. It isn't intended for the heavier bullets, but should do fine with 70 grainers.
I have a BR rifle in 6x47, which is a very similar cartridge, and it shoots very well indeed.
 
6x45 would means hand loading...

I would prefer a commercial round.. maybe 7.62x39mm as it would fit in AR mags.
 
6x45 would means hand loading...

I would prefer a commercial round.. maybe 7.62x39mm as it would fit in AR mags.
If I were you I'd take up reloading rather than go through all the hassle, effort and expense of your other options. Basically you're building a whole new gun! I'm skeptical you'll be happy with your butchered "military rifle" when you're all finished. No matter what, it's not going to be as good as a rifle and cartridge combo meant to take larger game.

Besides, if you're planning on using a gun for something it was never designed to do, you're going to need to compensate with very specific ammo. Which means, you're going to need to reload no matter what.

It just seems to me that replacing the barrel with 6x45 and reloading would be cheaper and more effective.
 
This 6x45 sounds interesting... I want to do a barrel swap on the 180B just for fun (to do it).

How does one "neck up" brass? Wouldn't the brass split? I reload for pistol now, but would consider reloading for rifle too.
 
If it ends up working, I want to know everything about it. Been thinking of doing this for almost a year now.
 
.223 brass is easily neck expanded. Preparing cartidges would be very straightforeward. AR type rifles have been commercially offered in 6x45. Apart from the barrel no modifications are needed to convert an AR. I believe that there was experimentation done with the 6x45 for a possible SAW.
7.62x39 would require serious alterations to the bolthead.
 
6x45 would means hand loading...

I would prefer a commercial round.. maybe 7.62x39mm as it would fit in AR mags.

Would be much cheaper and far easier to go out and buy a 7.62x39mm semi then. They start at 150 bucks. Another option would be a CZ858 if you like the pistol grip military look. You would be looking at big bucks to convert the Ar180 to 7.62x39mm, most likely pretty close to the purchase price of a ar180...
 
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