Long Range Hunting Online Magazine 240gr SMK
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# 240gr SMK

#1
05-04-2009, 05:38 PM
 Platinum Member Join Date: Feb 2008 Location: IOWA Posts: 2,123
240gr SMK

Could someone measure the oal of a 30cal 240gr SMK for me. I would like to run a calc on twist required for a barrelto stabilize this bullet. Also want to know what the SF is on a 240gr at 3000fps in a 9.5 twist.
Thanks,
JIM
#2
05-04-2009, 06:47 PM
 Platinum Member Join Date: Nov 2003 Location: Washington State Posts: 2,726
Re: 240gr SMK

Quote:
 Originally Posted by trueblue Could someone measure the oal of a 30cal 240gr SMK for me. I would like to run a calc on twist required for a barrelto stabilize this bullet. Also want to know what the SF is on a 240gr at 3000fps in a 9.5 twist. Thanks, JIM
1.582 give or take, depending on the meplat
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#3
05-04-2009, 07:28 PM
 Platinum Member Join Date: Feb 2008 Location: IOWA Posts: 2,123
Re: 240gr SMK

Thanks,jmden
#4
05-05-2009, 08:57 AM
 Gold Member Join Date: Apr 2007 Location: ALASKA Posts: 504
Re: 240gr SMK

1.600 according to QL and Loadbase libraries. Mine measure up about like JMDENs do.

Loadbase calculator using the Miller formula says you get a SF of 1.82 @ 3000 fps and a 9.5 twist.

Informative post by Bryan @ Berger regarding twist rates and the math behind them.
Question: twist rate for .338 bullets - Sniper's Hide Forums

Last edited by Autorotate; 05-05-2009 at 08:58 AM. Reason: Can't spell
#5
05-05-2009, 05:47 PM
 Platinum Member Join Date: Feb 2008 Location: IOWA Posts: 2,123
Re: 240gr SMK

I came up with a similar SF with the help of the software Michael sent me.
Good to know .

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