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300 SMK's BC???

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Unread 08-16-2008, 01:39 PM
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Join Date: Jun 2004
Location: Fort Shaw, Montana
Posts: 6,841
Re: 300 SMK's BC???

From 2500-2800 fps 0.770 is about perfect at my elevation.

At 2900-3100 fps I have found that 0.790 is perfect.

At 3300-3500 fps, I have used 0.800 to 0.820 depending on rifle.

These are all out of 1-10 barrels of different chamberings for the various velocity ranges.

For an all around average I always use 0.800 and that will get you extremely close with any velocity out to 1K so you can tweak your drops from there.
Kirby Allen(50)

Allen Precision Shooting
Home of the Allen Magnum, Allen Xpress and Allen Tactical Wildcats and the Painkiller Muzzle brakes.

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Unread 08-18-2008, 01:30 PM
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Join Date: Nov 2005
Location: Texas
Posts: 1,844
Re: 300 SMK's BC???

Yes---Kirby is right about the BC---your software will tell you what the drop is at a specific range. For guys like me who shoot 1k BR this is very important esp. when I am shooting longer ranges at the ranch. When you look at the BC and the TOF along with the wind speed and how long the velocity stays within a specific speed it will make your head hurt to try and figure this out---use software!! The drop is only one part of the equation windage is the other!!
The Truth Is Not Always Good For Business!!
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Unread 08-18-2008, 08:29 PM
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Join Date: Jan 2006
Posts: 225
Re: 300 SMK's BC???

Does anyone know what the new 300grn scenar is? I havent found any published BC not even on lapuas sight?

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Unread 08-18-2008, 08:59 PM
Join Date: Dec 2004
Location: El Reno, OK
Posts: 1,922
Re: 300 SMK's BC???

I'll second Kirby's observations on the low and high end. Those #'s work real well out of an edge and out of a 338 AM.
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Unread 08-18-2008, 09:48 PM
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Join Date: Jan 2002
Posts: 439
Re: 300 SMK's BC???

Sierra's published B.C is right on with my rifle. My velocity is around 2825 fps. The barrel has 9.3 twist.
To achieve the maximum possible accuracy, all variables must be remove or at least minimize.
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Unread 08-18-2008, 10:55 PM
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Join Date: Feb 2005
Location: Nevada
Posts: 2,782
Re: 300 SMK's BC???

I'm confused. :confused: No more!
Sorry guys I need to rest.

Jesus Christ the same yesterday, and to day, and for ever.

Our Lord Jesus said that as it was in the days of Noah and
also as it was in the days of Lot so it shall be in the days...
It's happening again!!! God sent to us His prophet, and His Word
to this generation and we once more are rejecting it as was prophesied!!!

---> As promised, God Sent His Prophet to us!
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