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338 high BC bullets

 
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  #22  
Old 09-21-2010, 10:20 PM
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Re: 338 high BC bullets

Quote:
Originally Posted by NZ Longranger View Post
Joel,
Been talking to Dan about their bullets. Looking forward to trying some and see how they kill out aways. Do you think the 300's will stabilize in a 10" twist at 3200 plus fps?
Greg
The 300 gr will not stabilize out of a 10 tw barrel... You may want to try the 252 gr as it worked fine for me out of a 10 tw. I ran it much faster than 3200 because I was using the .408 case.
We barreled up a 8.5 tw for the 300 gr...

I'll get some data and pics here soon. Been stacked with work..
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  #23  
Old 09-21-2010, 10:35 PM
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Location: Hawkes Bay New Zealand
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Re: 338 high BC bullets

What about the 275gn? Should be able to push that at 3350ish fps in the 338 Lunatic. It pushes Wildcat 250gn AT's at 3550fps. I've also got a 9.3" twist Broughton barreled Lunatic, that might go close with the 300gn? We built that one with the 300gn Wildcat AT in mind, before Richard stopped making them. Doesn't need the 9.3" for the 300gn SMK, but the all copper bullet is obviously way longer. Looking forward to your results!
Greg
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  #24  
Old 09-22-2010, 10:34 PM
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Re: 338 high BC bullets

As promised... here are the results we logged when comparing the 300 gr solid with the 300 SMK..

Both bullets were shot at a velocity of 3200 fps give or take a few ft + or - variation.
The 300 SMK was shot out of a 33" 10 tw barrel, and the 300 gr solid was shot out of a 30" 8.5 tw barrel. Both loads are single digit ES.

We did not shoot for group, just engaged rocks approx 12" in diameter. Two shots per rock at each range.

300 SMK


650 yds 9.5 moa
785 yds 12.5 moa
1,293 yds 27.75 moa
1,460 yds 34.75 moa
1,789 yda 49.25 moa

300 gr solid


650 yds 8 moa
785 yds 11.5 moa
1,293 yds 25.5 moa
1,460 yds 31.25 moa
1,789 yds 44.25 moa

As you can see, the solid was 5.0 moa flatter at 1,789 yards. That equates to 90" or 7.5 ft.
They were extremely consistent from shot to shot at each target.

Not an all encompassing test by any means, but certainly some hard data to ponder....

Here's a photo of the solid compared to the SMK...
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