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7MM Berger Conundrum

 
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  #8  
Old 04-10-2012, 10:13 AM
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Re: 7MM Berger Conundrum

Just the person I wanted to chime in.

Btw. I got a chance to skim through your book, Look forward to buying it here soon.

What i got out of reading *Most* of your 2 articles is (At a much lower velocity) the 168 and the 170 are very similar and not enough difference between them to really care which one ins being launched (excluding Energy for hunting). This is what i found in my simulations.

Big question now, if they preform almost identicle then what is the purpose for having 2 bullets the same. I would think it would be cost effective to drop the 180 and go for just the 168, develop a 190 or something that would have a ballistic advantage?

For anyone who wants quick reference the 2nd link he posted scroll down to where you see targets it summs it up pretty good i feel.
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Old 04-10-2012, 01:55 PM
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Re: 7MM Berger Conundrum

Quote:
Originally Posted by kc0pph View Post
...Big question now, if they preform almost identicle then what is the purpose for having 2 bullets the same. I would think it would be cost effective to drop the 180 and go for just the 168...
Some rifles 'tune' better with one or the other. In other words, they may be practically the same performance-wise, but if your rifle shoots one in 1/2 MOA groups, and the other in 1 MOA groups...

That's the same reason there are so many .22 cal varmint and target bullets in such a small weight range. 50 grains, 52 grains, 55 grains, 60 grains. All flat base hollow points. Not that there's much (if any) ballistic difference, but some rifles like certain weights better than others.

Take care,
-Bryan
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  #10  
Old 04-10-2012, 02:12 PM
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Re: 7MM Berger Conundrum

Quote:
Originally Posted by kc0pph View Post
I would think it would be cost effective to drop the 180 and go for just the 168, develop a 190 or something that would have a ballistic advantage?
What Bryan said.

...plus, he/they are working on a 195 that should have even more of an advantage if you have a rifle/cartridge capable of exploiting it.

-- richard
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  #11  
Old 04-10-2012, 03:40 PM
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Re: 7MM Berger Conundrum

Yeah that would make sense. Well just loaded up 20 of the 180's and we will see how well they do at the range tomorrow. Hoping 1/2 MOA out of them. Ill let you guys know how they do.

Do we have a estimate on the B.C of the 195 gn bullet? Just a rough guess??
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  #12  
Old 04-10-2012, 03:56 PM
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Re: 7MM Berger Conundrum

please post your results i shoot a 7mm 300wby and would like to see if you get them to work. i have not been able to get them to work.
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  #13  
Old 04-10-2012, 04:11 PM
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Re: 7MM Berger Conundrum

Well I somehow lost my micrometer and so can not measure the OAL of the loaded rounds but I loaded 20 with 75gn H870 (Light load) and seated them pretty far in. The rifle i am shooting them out of will get here tomorrow, plan is to clean it, scope it and head to the range. The rifle has a .180 freebore in it so not sure if that will help or not. Ill post pictures of my targets.
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Old 04-10-2012, 04:55 PM
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Re: 7MM Berger Conundrum

Quote:
Originally Posted by kc0pph View Post
Do we have a estimate on the B.C of the 195 gn bullet? Just a rough guess??
Berger to introduce 7mm 195 gr EOL Hybrid Hunting Bullet
"It has an estimated averaged G1 BC of .794 and a G7 BC of .406."
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