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#2058413 - 11/30/11 05:39 PM Sierra 55gr GameKing
GrizleyHunter Offline
Die Hard Member II

Registered: 03/09/07
Posts: 1150
Loc: Michigan,Mackinac county
Have any of you guys used the Sierra 55gr GameKings HPBT #1390
in your 223 AR.
What kind of luck do you have with them and how do they shoot.
I have a old cardboard box of 100 of them and thinking of trying a new load with them using Varget.
Thanks
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Good things come to those who wait but not to those who wait to late

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#2058470 - 11/30/11 06:34 PM Re: Sierra 55gr GameKing [Re: GrizleyHunter]
ackleyman Offline
PM senior

Registered: 01/08/03
Posts: 5408
Loc: Hickville
I shot a lot of p. dogs with them out of an HBAR years ago.

Also killed a lot of coyotes with them in a 788 in 223 and a Rem 700 in 22/250.

The Sierra BTHP is a little tougher bullet than the nosler Ballistic tip and will break both shoulders well, spine, and hip joints. You also get great penetration on quartering shots.

As a general rule of thumb, you get exceptional accuracy with this bullet.

If you use varget, use A cci 450 primer, accuacy will be a warm load.

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#2058482 - 11/30/11 06:41 PM Re: Sierra 55gr GameKing [Re: ackleyman]
GrizleyHunter Offline
Die Hard Member II

Registered: 03/09/07
Posts: 1150
Loc: Michigan,Mackinac county
Ackleyman
Thanks for the info
All I have is winchester primers on hand so I hope they work well.
Are you saying that you had best accuracy with loads on higher side of load data.
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Good things come to those who wait but not to those who wait to late

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#2058813 - 11/30/11 11:28 PM Re: Sierra 55gr GameKing [Re: GrizleyHunter]
cornstalker Offline
Die Hard Member II

Registered: 02/09/08
Posts: 1727
Loc: Colorado
That was a close one...

The 55 SGK HPBT over Varget is exactly the combo I want to try when my SD upper comes in. I was about to sell off my CCI 450's though. Thanks for the info ackleyman.

venatic has shot a few coyotes and a bunch of feral hogs with it and had good results. The same question when I posed it elsewhere drew very credible recommendations for the 55gr SBT SGK #1365 instead.

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#2059201 - 12/01/11 01:17 PM Re: Sierra 55gr GameKing [Re: cornstalker]
K-22hornet. Offline
Die Hard Member II

Registered: 11/06/03
Posts: 1261
Loc: Colorado
I've only used the SPBT #1365. I have noticed a difference on coyotes with this bullet, compared to a Nosler BT. With the Sierra, I get better penetration, but the Nosler gives more dramatic kills.

Very accurate bullet in my 222mag and I run a stiff charge of Varget, 29.0grs to be exact. My speeds are 3,550fps. This had me concerned about pressures, even though I had no signs, so I backed off to 28.5grs.
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#2059212 - 12/01/11 01:28 PM Re: Sierra 55gr GameKing [Re: K-22hornet.]
reelhook Offline
Predator Master

Registered: 02/20/03
Posts: 67
Loc: ok
1365 is a great bullet-game and varmits-38.5 gr ww/760 with mag primer-usual load disclaimer-my rifle vs yours

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#2059260 - 12/01/11 02:40 PM Re: Sierra 55gr GameKing [Re: K-22hornet.]
Spike Online
Seasoned Member

Registered: 03/20/02
Posts: 299
Loc: Baggs, Wy. USA
k-22hornet, I have a 222mag in a model 7 and saw your load of 29grs of varget with a 55gr bullet. I looked at hodgdon's web site for the 222mag and do not see varget listed. please tell me where you got your load from as it appeals to me. thanks spike

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#2059263 - 12/01/11 02:42 PM Re: Sierra 55gr GameKing [Re: K-22hornet.]
Spike Online
Seasoned Member

Registered: 03/20/02
Posts: 299
Loc: Baggs, Wy. USA
k-22hornet, I have a 222mag in a model 7 and saw your load of 29grs of varget with a 55gr bullet. I looked at hodgdon's web site for the 222mag and do not see varget listed. please tell me where you got your load from as it appeals to me. thanks spike

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#2059332 - 12/01/11 04:14 PM Re: Sierra 55gr GameKing [Re: Spike]
mattwehrly Offline
Seasoned Member

Registered: 01/05/11
Posts: 147
Loc: kiowa,co
Not a varget fan, doesn't meter well for me. But the 55 Sierra hpbt shoots well for me behind near max load of benchmark. Meters better,temp stable and very clean burning.


Edited by mattwehrly (12/01/11 04:14 PM)

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#2059342 - 12/01/11 04:36 PM Re: Sierra 55gr GameKing [Re: mattwehrly]
K-22hornet. Offline
Die Hard Member II

Registered: 11/06/03
Posts: 1261
Loc: Colorado
Spike,

I use load data for the 223 and increase the charge a bit.

The 222mag has about 5% more case capacity than a 223 and Hodgdon lists 27.5gr of Varget as max with 55gr in a 223.
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Liberals are the most highly educated, stupid people I've ever met!

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#2060010 - 12/02/11 08:14 AM Re: Sierra 55gr GameKing [Re: K-22hornet.]
Spike Online
Seasoned Member

Registered: 03/20/02
Posts: 299
Loc: Baggs, Wy. USA
k-22hornet, thanks for the information, I will try the varget and see what velocity I get. spike

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#2060117 - 12/02/11 11:07 AM Re: Sierra 55gr GameKing [Re: Spike]
N Wolf Offline
Seasoned Member

Registered: 01/25/11
Posts: 358
Loc: north west missouri
I shoot the 55 gr gameking over 25.6 gr of varget. I get true 1 inch groups with it. I the sierra load data shows 27 gr of varget to be the max load for that bullet. I have not cronnoed it yet. But with the 16" barrel on my sporticle it cant be verry fast.
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#2060239 - 12/02/11 01:52 PM Re: Sierra 55gr GameKing [Re: N Wolf]
GrizleyHunter Offline
Die Hard Member II

Registered: 03/09/07
Posts: 1150
Loc: Michigan,Mackinac county
Just finished with my load devlopment this morning with 55gr Sierra GameKing BTHP and ended up with 26gr Varget.
Group size was great .385 at 106 yds.
And .955 at 200yds with 18" rock river.
Now look out coyotes this little bullet is comming your way.
_________________________
Good things come to those who wait but not to those who wait to late

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#2060880 - 12/03/11 08:27 AM Re: Sierra 55gr GameKing [Re: GrizleyHunter]
tack Offline
Predator Master

Registered: 02/10/11
Posts: 57
Loc: nova scotia
I have both the 55 grain GK and the sierra 60 grain varminter loaded up for my .223 both are very accurate, which would you use for coyote? Most shots will be under 200 yards. I did shoot one dog last year with the 55 gk at about 150 yards and wasn't terribly impressed with the results. First shot hit the dog in the chest and put it down, but he quickly got back up and started walking away, hit him again in the neck which put him down again but I was still seeing lots of movement as if he was trying to get up again, so a third shot was required to anchor him for good. It wasn't a real big dog either, bullets were passing right through with a small exit, I think I wasn't getting enough expansion, which is hard to believe with the large hp they have. I had selected the GK because it was known as a tough bullet, but maybe too tough on smaller dogs? Are the 60's as tough? or do the expand better? Not really looking for a frangible bullet though in the event that a get a shot at a real big one, I,m worried about lack of penetration.

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#2060914 - 12/03/11 09:24 AM Re: Sierra 55gr GameKing [Re: N Wolf]
venatic Offline
Moderator

Registered: 06/11/03
Posts: 6360
Loc: waco,tx

What twist rate is your barrel? The 60gr Sierra works well when you spin it fast enough or so it seemed to me. Very accurate too!
The 55gr BTHP is a tough bullet I load them in 22-250's for deer/hogs and have used them in the .223 also but I had the same experience of complete pass-thru's on coyotes.


Edited by venatic (12/03/11 09:52 AM)
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