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190 gn Matrix Bullet B.C. .807 Who has tried them?

 
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  #22  
Old 03-28-2011, 04:26 AM
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Re: 190 gn Matrix Bullet B.C. .807 Who has tried them?

Quote:
Originally Posted by bsl135 View Post
Here are some further details on this bullet:
Matrix 190 VLD
-Bryan
Hi Bryan,
Thanks for making your data available. I find it very usefull.
That B.C. that you came up with is a bit lower than I expected and what is claimed by The Matrix mob. Any idea why the difference?

Would bullet pointing have much of an effect on the B.C. with this bullet?
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  #23  
Old 03-28-2011, 06:38 AM
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Re: 190 gn Matrix Bullet B.C. .807 Who has tried them?

Yes I do believe it would help topshot, this bullet has good form except for it's meplat- it's too big and ruins the aerodynamics with excessive detached bow shock. The ideal meplat size for this bullet would be around 35 thou if it could be achieved...
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  #24  
Old 03-28-2011, 07:23 AM
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Re: 190 gn Matrix Bullet B.C. .807 Who has tried them?

Since this bullet has a wide meplat (0.075") to begin with, I expect you could improve the BC by as much as 8%-10% by pointing the meplat. Bullets with smaller meplats (~-.058" to 0.064") have less to gain from pointing, around 2% to 4 or 5% typically.

The BC's stated by Matrix are estimates, and are therefore subject to quite a bit of error when compared to actual test results. Marshal is a good fella and knows this, but the prediction method was the only tool available to him and he wanted to provide something for BC's instead of nothing. I don't believe he's deliberately inflating the numbers, just using the only tool available to him.

-Bryan
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  #25  
Old 03-28-2011, 07:57 AM
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Re: 190 gn Matrix Bullet B.C. .807 Who has tried them?

Quote:
Originally Posted by groper View Post
Yes I do believe it would help topshot, this bullet has good form except for it's meplat- it's too big and ruins the aerodynamics with excessive detached bow shock. The ideal meplat size for this bullet would be around 35 thou if it could be achieved...
I have a Hoover pointing die and I had the guy at Hoover make me a special pointing punch specifically for the Matrix 190gr and I can get the point down to .053" without deforming the jacket.What percentange gain am I getting on the B.C. by having this done? Oh and yes they are accurate bullets, I am seating off the lands by .025". What distance are you guys seating them off the lands? I shoot a custom 7mm Dakota 25.5" Krieger 1-8.5 5R twist #5contour and using Retumbo 73.5grs for 2900fps.
Thx
Elmer
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  #26  
Old 03-28-2011, 10:04 AM
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Re: 190 gn Matrix Bullet B.C. .807 Who has tried them?

Quote:
Originally Posted by groper View Post
Yes I do believe it would help topshot, this bullet has good form except for it's meplat- it's too big and ruins the aerodynamics with excessive detached bow shock. The ideal meplat size for this bullet would be around 35 thou if it could be achieved...
It needs a ballistic tip..Rich
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  #27  
Old 04-02-2011, 02:05 AM
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Join Date: Aug 2008
Posts: 51
Re: 190 gn Matrix Bullet B.C. .807 Who has tried them?

Quote:
Originally Posted by bsl135 View Post
Here are some further details on this bullet:
Matrix 190 VLD
-Bryan
Bryan,
what is the form factor of the 210 berger as compared to the jlk210lbt. thanks,
chris
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  #28  
Old 03-16-2013, 11:10 PM
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Join Date: Jan 2013
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Posts: 95
Re: 190 gn Matrix Bullet B.C. .807 Who has tried them?

diggin up a old post. i just purchased some 190 matrix for a 7mm. hopefully shooting some next month. work is killin my toy time. shooting a 7 RUM.
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