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#3125759 - 01/15/13 08:46 PM .27 cal 150 gr. btsp sierra gameking
Rockhound
10 Point


Registered: 04/04/11
Posts: 2904
Loc: Lawrence Co. TN

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Anybody have any 270 data for this bullet and imr 4350 or imr 4831?
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#3125905 - 01/15/13 10:13 PM Re: .27 cal 150 gr. btsp sierra gameking [Re: Rockhound]
Jcalder
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Registered: 09/18/12
Posts: 1126
Loc: Tennesse

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Found this. Hope it helps

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#3125907 - 01/15/13 10:16 PM Re: .27 cal 150 gr. btsp sierra gameking [Re: Jcalder]
Jcalder
8 Point


Registered: 09/18/12
Posts: 1126
Loc: Tennesse

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Sorry. That's for 130gr. Hornady manual says 47.4 of 4350 at 2500 fps. Max is 52.5 at 2800. 4831 min is 48.1 at 2500 fps and max is 53.8 at 2800 fps. Hope that gives you an idea
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#3125910 - 01/15/13 10:19 PM Re: .27 cal 150 gr. btsp sierra gameking [Re: Jcalder]
Deer Assassin
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Registered: 08/01/03
Posts: 87214
Loc: Kingston Springs

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45.2 to 52.4 imr 4350 sierra 150 gn in their manula
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#3125979 - 01/15/13 11:09 PM Re: .27 cal 150 gr. btsp sierra gameking [Re: Deer Assassin]
bjohnson
6 Point


Registered: 11/23/10
Posts: 603
Loc: Ft. Hood, TX / Afghanistan

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Have you tried RL-17 in your .270? A little off topic but may give you a bit more velocity.

Edited by bjohnson (01/15/13 11:18 PM)
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#3126024 - 01/16/13 01:15 AM Re: .27 cal 150 gr. btsp sierra gameking [Re: Deer Assassin]
Rockhound
10 Point


Registered: 04/04/11
Posts: 2904
Loc: Lawrence Co. TN

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 Originally Posted By: Deer Assassin
45.2 to 52.4 imr 4350 sierra 150 gn in their manula


Thanks DA does it give a coal?
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Isaiah 40:31.... Those who wait upon The Lord .....shall renew there strength ......

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#3126025 - 01/16/13 01:16 AM Re: .27 cal 150 gr. btsp sierra gameking [Re: bjohnson]
Rockhound
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Registered: 04/04/11
Posts: 2904
Loc: Lawrence Co. TN

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 Originally Posted By: bjohnson
Have you tried RL-17 in your .270? A little off topic but may give you a bit more velocity.


Just working with what i have for now
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Isaiah 40:31.... Those who wait upon The Lord .....shall renew there strength ......

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#3126052 - 01/16/13 05:25 AM Re: .27 cal 150 gr. btsp sierra gameking [Re: Rockhound]
EastTNHunter
10 Point


Registered: 03/08/10
Posts: 2940
Loc: Rhea Co., TN

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I would start by seating a little off the lands on my OAL. The manual OALs are usually just SAAMI spec, and are "suggestions." Smoke or mark your bullet with a marker, insert it long in an unsized case (probably will have to bend the neck slightly jsut to get it to hold), then carfeully place in the rifle and close the bolt. This will seat the bullet to lands depth for a measurement, and you can adjust from there.
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#3127619 - 01/16/13 09:43 PM Re: .27 cal 150 gr. btsp sierra gameking [Re: Rockhound]
Deer Assassin
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Registered: 08/01/03
Posts: 87214
Loc: Kingston Springs

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 Originally Posted By: Rockhound
 Originally Posted By: Deer Assassin
45.2 to 52.4 imr 4350 sierra 150 gn in their manula


Thanks DA does it give a coal?
3.315
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#3127623 - 01/16/13 09:44 PM Re: .27 cal 150 gr. btsp sierra gameking [Re: EastTNHunter]
Deer Assassin
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Registered: 08/01/03
Posts: 87214
Loc: Kingston Springs

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 Originally Posted By: EastTNHunter
I would start by seating a little off the lands on my OAL. The manual OALs are usually just SAAMI spec, and are "suggestions." Smoke or mark your bullet with a marker, insert it long in an unsized case (probably will have to bend the neck slightly jsut to get it to hold), then carfeully place in the rifle and close the bolt. This will seat the bullet to lands depth for a measurement, and you can adjust from there.


or spend a few buck and buy the tool and a bullet comparator


best way to do it however the above woks fine

.010 off lands usually always produce great groups
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