Balistics

balcom · Post by **balcom** » Tue Apr 25, 2006 1:59 pm

Does anybody know the B C of 130grn Norma Diamond Projectiles. :?:

PeterH

bruce moulds · Post by **bruce moulds** » Tue Apr 25, 2006 3:44 pm

hi,
i believe tha norma has a 130 gn boat tail match bullet with a higher bc than the sierra 142 6.5.
would be greatly interested in getting some if you know where.
bruce.

balcom · Post by **balcom** » Tue Apr 25, 2006 4:19 pm

bruce moulds wrote:hi,
i believe tha norma has a 130 gn boat tail match bullet with a higher bc than the sierra 142 6.5.
would be greatly interested in getting some if you know where.
bruce.

Hi Bruce
Thanks for the info, I cant read swedish so I thought I would ask.
I use them every now & then and they shoot about the same elevation at 900yds as the 139 lapua.
I get them from Rebel Gun Shop, Woolongaba in Brisbane, last buy at $38.00 per 100 by the 1000 + F
I still dont know thier BC.
PeterH

Post by **AlanF** » Tue Apr 25, 2006 10:35 pm

Norma DiamondLine 130g has a BC of 0.548.

SMK 142 is 0.595 (conservative).

bruce moulds · Post by **bruce moulds** » Tue Apr 25, 2006 10:42 pm

peter,
sorry about that.
iwas sure i was right, but numbers speak louder than memories.
bruce.

Post by **AlanF** » Tue Apr 25, 2006 10:56 pm

Bruce,

You may have been confusing it with a solid copper 6.5mm bullet 108gr BC 0.598 which has been mentioned on the 6mmBR site recently.
http://home.snafu.de/l.moeller/6,5-mm/6,5-284-KSG.htm.
How good is that? Nearly 3500fps with a 0.598 BC bullet. However the jury is still out on how accurate (or not) they are!

Alan

balcom · Post by **balcom** » Wed Apr 26, 2006 7:54 am

AlanF wrote:Norma DiamondLine 130g has a BC of 0.548.

SMK 142 is 0.595 (conservative).

Hi Alan,
Thanks, where do you get the info from. :?:

PeterH

Post by **AlanF** » Wed Apr 26, 2006 8:45 pm

Peter,

Click on http://www.norma.cc/sida/eng/index.html then click BALLISTIC on the top menu line, then Ballistic on the second menu line. Wait for it to load then click ok on Match bullets, then click on .264 Diamond Line 130gr and the Ball. Coefficient will display near the top left of screen.

They certainly make you work for your information at Norma :roll:

!

Alan

balcom · Post by **balcom** » Thu Apr 27, 2006 2:06 pm

AlanF wrote:Peter,

Click on http://www.norma.cc/sida/eng/index.html then click BALLISTIC on the top menu line, then Ballistic on the second menu line. Wait for it to load then click ok on Match bullets, then click on .264 Diamond Line 130gr and the Ball. Coefficient will display near the top left of screen.

They certainly make you work for your information at Norma !

Alan

Thanks Alan