Long Range Hunting Online Magazine


Go Back   Long Range Hunting Online Magazine > Rifles, Reloading, Optics, Equipment > Rifles, Bullets, Barrels and Ballistics


Reply

G7 vs G1 BC

 
LinkBack Thread Tools Display Modes
  #1  
Old 08-05-2013, 04:24 PM
Junior Member
 
Join Date: Jul 2013
Location: NE Pennsylvania
Posts: 11
G7 vs G1 BC

Okay I'm new to this whole thing so please bear with me... Why is the difference between the two BC's and when do I use which one. Thanks
Reply With Quote
  #2  
Old 08-05-2013, 05:10 PM
Gold Member
 
Join Date: Jan 2012
Location: Hot Springs, South Dakota
Posts: 504
Re: G7 vs G1 BC

A quick internet search produced this reuslt and it explains it pretty well: G1 vs. G7 Ballistic Coefficients — What You Need to Know Daily Bulletin
Reply With Quote
  #3  
Old 08-05-2013, 05:16 PM
Silver Member
 
Join Date: Sep 2011
Location: Germany
Posts: 122
Re: G7 vs G1 BC

They use different bullets for comparison. The G1 projectile is a flatbase shortnosed bullet, the G7 is a boattail pointed nose design. If you shoot a boattail bullet use the G7 coefficient.

Buy Applied Ballistics for Long Range Shooting, it will teach you the basic theory behind external ballistics applicable for lr shooting.
Reply With Quote
  #4  
Old 08-05-2013, 10:20 PM
Gold Member
 
Join Date: Oct 2012
Location: Colorado
Posts: 583
Re: G7 vs G1 BC

Quote:
Originally Posted by Beng View Post
They use different bullets for comparison. The G1 projectile is a flatbase shortnosed bullet, the G7 is a boattail pointed nose design. If you shoot a boattail bullet use the G7 coefficient.

Buy Applied Ballistics for Long Range Shooting, it will teach you the basic theory behind external ballistics applicable for lr shooting.
Yep, x2...great book too
Reply With Quote
  #5  
Old 08-05-2013, 11:52 PM
Platinum Member
 
Join Date: Jul 2004
Location: Texas
Posts: 5,384
Re: G7 vs G1 BC

With the older style bullets the G1 was OK but now with all of the high BC bullets the old model is
just not accurate when trying to develop a drop chart.

The real problem is that the manufactures can use ether the G1 or the G7, and if you were a manufacture
would you want to say your bullet has a BC of .400 when everyone else was using the G1 method and claiming a BC of .700+.

In testing a long range load you will find that the G7 BCs are closer to actual drop And can be
very accurate to calculate ACTUAL BCs of your bullet.

If you can get past the lower numbers, the G7 method is the best.

Just my opinion

J E CUSTOM
__________________
"PRESS ON"
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes


Current Poll
Spot & Stalk or Ambush For Western Deer?
MOSTLY - Spot & Stalk - 73.65%
1,009 Vote
MOSTLY - Ambush - 26.35%
361 Votes
Total Votes: 1,370
You may not vote on this poll.

All times are GMT -5. The time now is 04:14 PM.


Powered by vBulletin ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Management Powered by vBadvanced CMPS
All content ©2010-2014 Long Range Hunting, LLC