Long Range Hunting Online Magazine


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

Rifles, Bullets, Barrels & Ballistics Applied Ballistics


Reply

G7 bc for .277 165 grain matrix vld

 
LinkBack Thread Tools Display Modes
  #1  
Old 01-20-2012, 10:39 PM
Junior Member
 
Join Date: Feb 2009
Posts: 27
G7 bc for .277 165 grain matrix vld

Can anyone give me this info?
Reply With Quote
  #2  
Old 07-03-2012, 09:28 PM
Silver Member
 
Join Date: Nov 2010
Location: Round Rock, TX
Posts: 180
Re: G7 bc for .277 165 grain matrix vld

Did you ever find out?
Reply With Quote
  #3  
Old 07-04-2012, 03:00 PM
Silver Member
 
Join Date: Dec 2008
Location: Tri-Cities, WA
Posts: 129
Re: G7 bc for .277 165 grain matrix vld

I have done extensive testing with the 175gr. It has a G1 of .6435 and a G7 of .3225.

My friend who is as anal as I am with checking the BC's has tested the 165gr at a G1 of .638, so the G7 profile would be a .319.
Reply With Quote
  #4  
Old 07-04-2012, 03:08 PM
Platinum Member
 
Join Date: Jul 2011
Location: Pennsylvania
Posts: 1,254
Re: G7 bc for .277 165 grain matrix vld

Quote:
Originally Posted by MuleHunter View Post
I have done extensive testing with the 175gr. It has a G1 of .6435 and a G7 of .3225.

My friend who is as anal as I am with checking the BC's has tested the 165gr at a G1 of .638, so the G7 profile would be a .319.
Did you happen to test these in the 270 WBY?
__________________

"The only thing necessary for the triumph of evil is for good men to do nothing"
http://www.longrangehunting.com/foru...4-build-83765/ - Build Thread
http://www.longrangehunting.com/foru...-284-a-124876/ - Gun Pictures/Ongoing Shooting Thread
Reply With Quote
  #5  
Old 07-04-2012, 03:34 PM
Silver Member
 
Join Date: Dec 2008
Location: Tri-Cities, WA
Posts: 129
Re: G7 bc for .277 165 grain matrix vld

No. These were tested at a muzzle velocity of 2,990fps with the 175gr and at 2,950fps with the 165gr.

Brian Litz tests Berger bullets from a 3,000fps muzzle velocity down to 1,500fps and that average BC across those velocity bands are the ones Berger lists on their website for their bullets. My testing gets as close to his results as possible without using sonographs at multiple ranges.

In my experience when you approach the 3,150-3,300fps range the average BC gets higher. My goal for testing these bullets was to mimic Litzs' testing as close as possible so that the average shooter shooting them in the 2,800-3,000 fps range would have an accurate average BC to start with.

The cartridges used were a 270 WSM and a 270 Win

I did a little write up on how I tested the 175gr in the ELR section of this forum.
Reply With Quote
  #6  
Old 07-04-2012, 05:48 PM
Platinum Member
 
Join Date: Dec 2008
Location: Great Falls, MT
Posts: 4,818
Re: G7 bc for .277 165 grain matrix vld

Quote:
Originally Posted by MuleHunter View Post
No. These were tested at a muzzle velocity of 2,990fps with the 175gr and at 2,950fps with the 165gr.

Brian Litz tests Berger bullets from a 3,000fps muzzle velocity down to 1,500fps and that average BC across those velocity bands are the ones Berger lists on their website for their bullets. My testing gets as close to his results as possible without using sonographs at multiple ranges.

In my experience when you approach the 3,150-3,300fps range the average BC gets higher. My goal for testing these bullets was to mimic Litzs' testing as close as possible so that the average shooter shooting them in the 2,800-3,000 fps range would have an accurate average BC to start with.

The cartridges used were a 270 WSM and a 270 Win

I did a little write up on how I tested the 175gr in the ELR section of this forum.
That's an excellent write up and thanks for sharing.

Do you mind sharing your 165/175 accuracy loads for the .270 Win? Thank you in advance.
__________________

I voted for my "FREEDOM", "GUNS", and "MONEY" - keep the change - UNK.



"I am always proud of my country!"

"Leadership Rule #2: Don't be an @zzhole." - Maj Gen Burton Field.
Reply With Quote
  #7  
Old 07-04-2012, 08:29 PM
Silver Member
 
Join Date: Dec 2008
Location: Tri-Cities, WA
Posts: 129
Re: G7 bc for .277 165 grain matrix vld

Norma brass for the WSM. Fed 210GM primers. .020 off the lands.

H1000 for both cartridges.

270 Win. Win brass, br-2 primers, .020 off the lands.

Work up in small increments like .2 gr

Im very anal about load prep with charge weight, brass prep, and bullet sorting. The Win is shooting .35 MOA, the WSM is 1/4 MOA or better.
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes


Similar Threads for: G7 bc for .277 165 grain matrix vld
Thread Thread Starter Forum Replies Last Post
G7 bc for .277 165 grain matrix vld Paramudd Long Range Hunting & Shooting 13 07-25-2012 10:04 PM
.277 Matrix bullets MuleHunter Reloading 6 11-23-2011 06:20 PM
165 Matrix in a 270 WSM Booney Reloading 2 09-28-2011 12:23 AM
7mm RUM and 190 Matrix sledder1 Reloading 3 05-18-2011 05:01 PM
Matrix Ballistics Ltd? Oliveralan Rifles, Bullets, Barrels & Ballistics 3 08-29-2010 09:34 PM


All times are GMT -5. The time now is 11:36 PM.


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