5.56 converted to 300 blackout?

[DIYARCHERYJUNKIE]

I've read on multiple other forums that all you have to do is swap barrels.  Is this true and besides being able to hunt with a 300 blackout round what advantage or disadvantages does the round have? 

[carpsniperg2]

Yep all you need is a barrel swap out. Runs using the same 223 bcg.

The 300blk out is not the best pick for hunting big game in the ar-15 but it most certainly will work.

Brass is pretty easy to make yourself with the right tools from 223 brass.

The biggest advantage of the round is being able to load the subsonic's for us guys who are running suppressors.

[DIYARCHERYJUNKIE]

What other calibers are better for hunting that will fit the ar15?  What other parts besides a barrel would I need for these different calibers?

[carpsniperg2]

The 6.5 Grendel is a great choice as well as 243wssm which is a monster in the ar15. Both would require a new barrel and bcg upgrades.

A really simple one that is a great choice is the 6mm-223. Swap a barrel and you are good to go. Super easy to neck a 223 up to 6mm. Good choice of bullets as well.

[Blacklab]

I'm not bias at all honest  Grendel is a hands down a great choice for hunting. The ballistics after 200 yards are outstanding. But remember I'm not bias 

[Biggerhammer]

I'm not bias at all honest  Grendel is a hands down a great choice for hunting. The ballistics after 200 yards are outstanding. But remember I'm not bias 

 

[DIYARCHERYJUNKIE]

The six five sounds like the right answer.  So I buy the barrel and bcg upgrades?  What are those. Where would have them for cheapest online and what price is fair?  What will be the cost to get it put together after I get it? Thanks for the help

[Biggerhammer]

All you need is a barrel, a Grendel bolt & a magazine. You can get barrels from Shilen, AA & Satern. Check Midway USA and Brownells. They get regular shipments of 6.5 Grendel barrels from the major makers, usualy these barrels come with a matching bolt. You need to be quick, put yourself on "Notification" on Midway, they go in a hurry. You can order one but there is a wait, I've been waiting on a custom Grendel barrel from Satern since last Oct. Rainier Arms has Grendel mags in stock last I checked 17.00 bucks or so.

[Blacklab]

lilja  produces Grendel also. you want a AR15 drop in barrel with matching bolt.

Here's a Grendel web site/forum million years of experience 

www.65grendel.com 
There's also 2 books to be had there. Also about the Grendel. Volume 2 a lot of info plus load data. I highly recommend getting them 

[Heredoggydoggy]

The 6.5 Grendel or the 6.8 SPC are good hunting cartridges, and legal for Big Game in this State.  The .300 blackout was developed mainly as a sub-sonic round for suppressed rifles.  There are hunting loads available, but as a Big Game gun, you'd be just as well off with a 30-30. 

[stuckalot]

The 6.5 Grendel or the 6.8 SPC are good hunting cartridges, and legal for Big Game in this State.  The .300 blackout was developed mainly as a sub-sonic round for suppressed rifles.  There are hunting loads available, but as a Big Game gun, you'd be just as well off with a 30-30. 

Which is one of the benefits of the 300blk it's only a couple steps behind the 30-30 and it runs in an ar platform easily. For those that feel the 5.56 is "anaemic" it matches the 7.62x39 ballistics.

In my opinion 6x45 is what the m16 should have been.

[DIYARCHERYJUNKIE]

I'm gonna go Grendel.  I have been looking at huskamaw scopes as well.  Any tips on the huskamaws.  I've seen a few for 1500 ish.  Is that about what a huskamaw scope is gonna run me?  This gun was my stepfathers and I want to convert it to a precise hunting rifle.  The 6.5 seems like the easy way to do so.  Its a colt with all magpull.  It's a le69 something.  Very nice ar15 with less than 1000 rounds through it.  I will also be getting a bipod for it.  I was thinking a longer bi pod that can be shot sitting up.  Thanks for all the help.  Any suggestions on scope choice by huskamaw?

[Blacklab]

I really think your going to enjoy the Grendel  As for the scope you mention no clue 

[Heredoggydoggy]

Never heard of Huskemaw scopes, but there are so many new scope brands on the market these days.  Seems like everyone is slapping their name on a Chinese-made scope...   

[hillbilli]

advantages of the .300 blackout (whisper) is same mag and bolt as std AR.. just requires a barrel change, and it's ability to run subsonic functioning load for suppressors.. disadvantage is ballistics are 7.62x39 (123@2350/208@1100).. works for deer, wouldn't use it on anything bigger. 6.5 Grendel uppers are also sold under the name '6.5 sporter' by Model one sales, and others..