AR question - Calibers?

[Mr_Sheesh]

Hey all.

Considering getting one+ AR's (again) - Last one I had was just 5.56; If you were going to get say 2-4 different lowers, in what calibers would you get uppers for them?

Probably mostly will try varminting with these as that's sorta my thing, at various ranges. Pretty long ranges would be nice.

I've considered of course 5.56, maybe 300 BO for closer in varmints using CBs; for varminting what else would you think would be good?

Current plans are not to move to an area where there are wild hogs, so I don't know if I need a large caliber or not... Probably Montana if all goes well.

Most other niches are covered, just scratching my head and thinking on what I need / want & thought you folks might have ideas.

I'll probably plink etc. somewhat too, of course

Thanks!

[Lloyd Smale]

556 obviously. A 9mm would defineately be next on my list, king of the plinking ars! I shoot my two 9s more then all the rest put together and it also makes a great home defense **** gun. maybe a big bore like a 450 458 or 50 beo. 300bo is a winner. Maybe the 6.5 Grendel and im looking hard at the new 350 Winchester.

[Boomsticks Firearms]

One of my favorites is 17 Remington and the others that I have is 6.8 SPC, 223 Wylde, 6.5 Grendel, 300 BO, 7.62x39, and 308 win

[Rcmaveric]

6.5 Grendel and .277 Wolverine but I am biased. I would go with 7.62x39 before i would go with 300 BO.

Sent from my SM-G950U using Tapatalk

[cwlongshot]

BUNCH of GREAT calibers!!

For vermin and ease of fodder the 223/556 is probably your best bet.

But know and beware, upper swaps are easy as opening the wallet, pressing and de-pressing two pins... So know you might just own a few in a few years...

CW

[jmort]

I like three. The original, really versatile, and the 300 BO and the 458 SOCOM. All three use unmodified AR mags.
My mags are color coded so there will not be any surprises. I get why there is a continious push to replace the 300 BO, but I really like it best of all. With 120 grain +/- bullets it will smoke medium game and Goblins. Waiting for a 230 grain 300 BO group buy mold from Mihec with a serious hollowpoint. That will be nice as I like big subsonic bullets. The beauty of the 300 BO is the ability to shoot 90 to 250 grain bullets, supersonic to subsonic, and do it well/cycle the gun.
The .458 SOCOM will also do supersonic and subsonic with 250 to 600 grain bullets, and do it well. It is a hammer and plug and play, unlike other big bore options.
I am set with these three. There are so many choices, that is the beauty of the AR15. Hope you find what you are looking for.

[sparky45]

300BO ; 5.56 ; and now I'm smitten by the prospect of the 357AR.

[dragon813gt]

Calibers? Let’s see, 22, 25, 30, 35, 45, 50 and w/ all the wildcat cartridges you can pretty much fill in every other caliber I didn’t list.

[ikarus1]

Go big or go home. The .458 Socom is a barrel change (and maybe some ejection port relief or get a special upper from Anderson) away from giving you a serious thumper in a lightweight AR platform.

I have several 5.56 ARs, a 6.5 Grendel 12.5" pistol upper, an 8.5" .300BLK that I love, and then there's the .458.

[lefty o]

i have 223/223wylde/5.56, and 300Ham'r. if i felt the need for bigger in a AR15 without going up in size to an AR10, id probably lean towards the 450bushmaster. in reality, there are a ton of cartridges that fit the AR platform, pick something that meets your needs/criteria, and run with it.

[Boolit_Head]

223 wylde (chamber) for general principal, 300 Blackout is fun, 6.8 spc makes a good hunting round.

There are some nice wildcats out there too. I've been watching the 10 mm AR Mag with interest. I'm hoping they get it worked out soon.

[ShooterAZ]

My choices are: 5.56mm, 300BO, 6.8SPC, and 450 Bushmaster. This demonstrates the versatility and utility of the AR platform.

[Ramjet-SS]

I own 5.56, 6.8 SPCII, 458 SOCOM going to add a 338 Specter or a 375 SOCOM

[cwlongshot]

223 wylde (chamber) for general principal, 300 Blackout is fun, 6.8 spc makes a good hunting round.

There are some nice wildcats out there too. I've been watching the 10 mm AR Mag with interest. I'm hoping they get it worked out soon.

I agree! I also like what I am seeing with this 350 Legend!

CW

[geezer56]

AR's are like crack. I have waaay too many. 5.56 and 7.62x39 get used the most, but I really like my Grendel. The 25-45 Sharps is fun too. Got the 458 and a 450 BM for thumping stuff. Just getting started with the 30 American. Hey, if it's worth doing it's worth overdoing.

[Mr_Sheesh]

If AR magazines were longer I'd see about a 7mm TCU AR, but I'd definitely have to seat the bullets rather deeply for those to work in an AR!

[jmort]

"Hey, if it's worth doing it's worth overdoing."

That is funny. I like it.

[Japlmg]

My son has:
22 LR, 7.62x25, 7.62x39, 9mm Luger, 40 S&W, and 45 ACP.

[KYCaster]

I have a couple of friends who really like their 224 Valkyries.
Looks like it would be a great long range varmint cartridge.

Jerry

[nawagner]

Count me as another 6.5 Grendel fan. Great long range caliber.