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#3182021 - 01/01/19 11:29 AM Thinking about a SBR for coyotes
jk2paintworx Offline
Seasoned Member

Registered: 08/24/14
Posts: 450
Loc: Spokane WA
I am considering a SBR build for hunting coyotes with thermal in tight cover. I have a Silencerco harvester and it gets a bit cumbersome. Thinking around a 12" barrel and a 300blk out using subsonic sound like fun but probably more of a novelty since I don't think it will have the performance needed. Most of the shots are under 100 yards. I currently have a .223. 6.5Grendel. 6.8SPC and I use factory ammo with good results so not wanting to start reloading. I have seen that others are using 12" 6.8spc with better performance than the 300bo so wondering if that makes more sense. Thoughts?

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#3182208 - 01/01/19 10:01 PM Re: Thinking about a SBR for coyotes [Re: jk2paintworx]
Lazerus Offline
Die Hard Member

Registered: 12/08/16
Posts: 525
Loc: lost in the desert
I have a 16" 6.8 and it is a hammer. With suppressor it is a bit cumbersome but manageable. My main predator rifle is a 10.5" blk suppressed. Plenty of knockdown power inside 200 yrs. I do not hunt it subsonic though.
_________________________
Coyote...cowpie...don't make no sense no how...

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#3182257 - 01/02/19 12:12 AM Re: Thinking about a SBR for coyotes [Re: jk2paintworx]
crapshoot Offline
Retired PM Staff

Registered: 03/22/02
Posts: 22276
Loc: Henderson,Nevada,USA
10.5" seems to be the sweet spot as far as length and balance without losing to much velocity or damage your can. With that said, I have a 10.5" 223, a 5.5" 300 blk, and a 5.5" 7.62x39 AR15, and a 10" 7.62x39 ak47.
_________________________
I carry a gun because a cop is to heavy.

Average response time for a 911 call is 10 min.
Average response time for a .45acp is 900FPS.

Remember, if you're not pissing off a liberal......You are one!
Ted Nugent

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#3182334 - 01/02/19 10:44 AM Re: Thinking about a SBR for coyotes [Re: jk2paintworx]
Varminterror Online
Die Hard Member III

Registered: 03/23/12
Posts: 2874
Loc: Kansas
10.5Ē 6.8spc is where I landed for a coyote killing rifle.
_________________________
Conservationalist? I thought you said conversationalist!?!?!

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#3182338 - 01/02/19 11:17 AM Re: Thinking about a SBR for coyotes [Re: jk2paintworx]
jk2paintworx Offline
Seasoned Member

Registered: 08/24/14
Posts: 450
Loc: Spokane WA
I do like my 16" SPC but for some reason I am drawn to the 300. Probably because of the subsonic option. I just don't know if that's even realistic though. What would the effective range be for subsonic on coyotes with SubSonic 300BO factory loads?

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#3183038 - 01/04/19 11:06 PM Re: Thinking about a SBR for coyotes [Re: jk2paintworx]
cclark Offline
Seasoned Member

Registered: 02/22/07
Posts: 493
Loc: Michigan
I run a suppressed 10.5" barrel. I don't run subsonic, 60 grain V-max and it works great. On different note, while I was waiting on my can I shot a woodchuck with no hearing protection. I won't make that mistake again. Brutally painful!

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#3183071 - 01/05/19 09:54 AM Re: Thinking about a SBR for coyotes [Re: jk2paintworx]
willy1947 Offline
Die Hard Member III

Registered: 11/20/11
Posts: 3144
Loc: Ohio, Ohio


This is my SBR 300 Blackout 10.5/Specwar 7,62,
Midwest handguard, They make them to fit over your can and barrel.
The scope is the new ATN Day/Night scope/5X20.

_________________________
Writing in this blog is like guessing, the color of a pig in a poke. You are wrong a lot more than you are right.
"No one plans to fail; we only fail to plan!"
NRA Life Member

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#3183191 - 01/05/19 11:17 PM Re: Thinking about a SBR for coyotes [Re: Varminterror]
SubpaR Offline
Seasoned Member

Registered: 09/27/15
Posts: 239
Loc: Hays, KS
Originally Posted By: Varminterror
10.5Ē 6.8spc is where I landed for a coyote killing rifle.



What load are you shooting out of that? Velocity?
I'm probably going to go the SBR route and end up with an ARP barrel.

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#3183443 - 01/07/19 12:26 AM Re: Thinking about a SBR for coyotes [Re: jk2paintworx]
jk2paintworx Offline
Seasoned Member

Registered: 08/24/14
Posts: 450
Loc: Spokane WA
After some research I found out that I canít shoot 300BLK supersonic with a SBR through my Harvester. Thatís a bummer because I am sure I will want the option of SuperSonic at some point.

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#3183932 - 01/08/19 07:54 PM Re: Thinking about a SBR for coyotes [Re: jk2paintworx]
Greyhunter Offline
Die Hard Member

Registered: 05/13/08
Posts: 880
Loc: Iowa
How short of a barrel are you planning? The harvester is rated for .300WM so 300BO pressures are nothing. It may not be rated for say a 10.5" barrel but I would'nt hesitate to do it if you aren't going to be firing thousands of rounds or doing mag dumps.
I built a 10.5" .300BO upper just to play with subs, but if you were limited to under 100 yards I think you could make it work on coyotes, with a good expanding bullet like the Hornady SubX 190gr. Sounds fun to try.
I'm building a 12" 6.5 Grendel for a little more reach.

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#3184094 - 01/09/19 01:37 PM Re: Thinking about a SBR for coyotes [Re: jk2paintworx]
crapshoot Offline
Retired PM Staff

Registered: 03/22/02
Posts: 22276
Loc: Henderson,Nevada,USA
Originally Posted By: jk2paintworx
After some research I found out that I canít shoot 300BLK supersonic with a SBR through my Harvester. Thatís a bummer because I am sure I will want the option of SuperSonic at some point.


Reasoning? Barrel to short?
_________________________
I carry a gun because a cop is to heavy.

Average response time for a 911 call is 10 min.
Average response time for a .45acp is 900FPS.

Remember, if you're not pissing off a liberal......You are one!
Ted Nugent

Top
#3184120 - 01/09/19 03:18 PM Re: Thinking about a SBR for coyotes [Re: jk2paintworx]
jk2paintworx Offline
Seasoned Member

Registered: 08/24/14
Posts: 450
Loc: Spokane WA
Thatís what silencerco says. I imagine itís too much pressure with that short of a barrel. I donít know for sure but a suppressor failure on a SBR sounds un-fun. I think the harvester is a lightweight can with no intentions of full auto or SBR. Maybe someone has more info on this.

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#3184131 - 01/09/19 04:47 PM Re: Thinking about a SBR for coyotes [Re: jk2paintworx]
crapshoot Offline
Retired PM Staff

Registered: 03/22/02
Posts: 22276
Loc: Henderson,Nevada,USA
I probably shouldn't be running my SAS m-47 on a 16" 22-250 or my SAS Vengeance on a 5" 300bo or 5" 7.62x39 either....but...
_________________________
I carry a gun because a cop is to heavy.

Average response time for a 911 call is 10 min.
Average response time for a .45acp is 900FPS.

Remember, if you're not pissing off a liberal......You are one!
Ted Nugent

Top
#3184257 - 01/10/19 05:36 AM Re: Thinking about a SBR for coyotes [Re: jk2paintworx]
willy1947 Offline
Die Hard Member III

Registered: 11/20/11
Posts: 3144
Loc: Ohio, Ohio
Originally Posted By: jk2paintworx
After some research I found out that I canít shoot 300BLK supersonic with a SBR through my Harvester. Thatís a bummer because I am sure I will want the option of SuperSonic at some point.


I have Silencerco Specwar 7,62 I have no problems.
My new 300 BO upper 16 in, I got it with a pistol gas tube, Shoots great.
I was told on this site to buy a Specwar and that is what I did.
_________________________
Writing in this blog is like guessing, the color of a pig in a poke. You are wrong a lot more than you are right.
"No one plans to fail; we only fail to plan!"
NRA Life Member

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#3224961 - 12/28/19 02:24 PM Re: Thinking about a SBR for coyotes [Re: jk2paintworx]
Huckleberry75 Offline
Die Hard Member

Registered: 01/20/15
Posts: 673
Loc: Yukon, OK-ish
12.5" grendel with the 90gn Federal TNT varmint hp load. Short, handy and has enough punch for killing what I need to out to 200yds.. current truck / tractor gun.

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