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Tech.stuff......bullet weight V`s rifle twist

 
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KILLITnGRILLIT



Joined: 14 Sep 2006
Posts: 894
Location: Looking at a screen in the front room
PostPosted: Thu Feb 08, 07 5:08 pm    Post subject: Tech.stuff......bullet weight V`s rifle twist  Reply with quote    

Anyone know much about this dark art as my cranium is near meltdown

I`ve sen the greenhill method but it seems too simplistic ...........Soooo any takers ??

dpack



Joined: 02 Jul 2005
Posts: 33834
Location: yes
PostPosted: Thu Feb 08, 07 5:38 pm    Post subject: Reply with quote    

lost river ballistic
seems to have a good article (in support of their rounds)but covering stuff like spin,speed and terminal effects

KILLITnGRILLIT



Joined: 14 Sep 2006
Posts: 894
Location: Looking at a screen in the front room
PostPosted: Thu Feb 08, 07 9:20 pm    Post subject: Reply with quote    

I wouldn`t ,and probably couldn`t afford, the alloy/copper ammo.

I should have stated I am working up handloads and then when talking to a friend we got onto weight/calibre and it descended into hades as we discovered(Cheers Mr.GOOGLE !) that there are other things,such as curve of the ogive etc.

After that we both had frazzled crania(?) so I had posted to see if someone can shed light on it in simple words and pictures

dpack



Joined: 02 Jul 2005
Posts: 33834
Location: yes
PostPosted: Thu Feb 08, 07 10:24 pm    Post subject: Reply with quote    

maybe finding an expert to match gun /n / round /n/ target is the way forward
[b becoming an expert on etc [/b

build a practice round for 100m ,use one of those ones fof a freezer shot

KILLITnGRILLIT



Joined: 14 Sep 2006
Posts: 894
Location: Looking at a screen in the front room
PostPosted: Fri Feb 09, 07 10:06 am    Post subject: Reply with quote    

I`m fine @ 100-200yds but need to get it right for 300-600yds as there is a world of difference.

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