Long Range Hunting Online Magazine


Go Back   Long Range Hunting Online Magazine > Hunting > Extreme Long Range Hunting & Shooting (ELR)

Extreme Long Range Hunting & Shooting (ELR) Over 1,000 Yds.


Reply

How i Test Ballistic Coefficients-Matrix 175gr

 
LinkBack Thread Tools Search this Thread Display Modes
  #8  
Old 07-17-2012, 12:34 PM
Junior Member
 
Join Date: Apr 2012
Posts: 19
Re: How i Test Ballistic Coefficients-Matrix 175gr

Great thread, thank you for the time you put in to this research! You and BnG are my 270 "idols", lol.

My question would be, do you feel that the difference in claimed BC to calculated BC would be the same/similar in the 165 gr bullet? Subscribed fo sho.
Reply With Quote
  #9  
Old 07-19-2012, 02:27 PM
Silver Member
 
Join Date: Dec 2008
Location: Tri-Cities, WA
Posts: 129
Re: How i Test Ballistic Coefficients-Matrix 175gr

I have not done the extensive testing with the 165's, however a reliable source that uses similar BC testing told me he is using .638 for the 165's. That sounds right to me given the fact that they both have the same Ogive and boat tail design. The 175 has a longer bearing surface and higher sectional density and I believe that is why its BC is only marginally higher. The 175 does shoot incredibly out of a 9 twist 5R Benchmark though and I have severe doubts that I could get another bullet to preform that accurately.
Reply With Quote
  #10  
Old 07-19-2012, 09:30 PM
Junior Member
 
Join Date: Apr 2012
Posts: 19
Re: How i Test Ballistic Coefficients-Matrix 175gr

Do you or anyone you've seen have any recovered Matrix bullets from impact, whether animal, gelatin, wet newspaper or other? I'm wondering how they do in the expansion department.

Ultimately i'd like to use my 270 wsm for northern Ontario moose, and right now I'm leaning towards the Partition 160 gr, since I don't need much for distance (<300 yards), and the fact that I'm stuck with a 23" 1:10 twist barrel in my rifle for now, but the Matrix 165 definitely interests me.

Has anyone had any experience with Woodleigh bullets? They make a 180 grn .277 bullet that might also be good for bigger game. http://www.woodleighbullets.com.au/b...onal/264q-333q
Reply With Quote
  #11  
Old 07-19-2012, 10:21 PM
Platinum Member
 
Join Date: Nov 2008
Location: SW Montana
Posts: 4,529
Re: How i Test Ballistic Coefficients-Matrix 175gr

The only Matrix I have been able to recover from animals is shots under 100 yards and hitting a bull elk in the neck or shoulders. They end up in a twisted copper mess on the off side, not much weight is left but it's blowing bone all the way and does an amazing job blowing the life out of stuff. Farther out I have not been able to get one to stay in an elk even shooting them through shoulders. I shot a bunch of deer last year and all exited, even with very heavy quartering shots at close range. I shoot mostly the 165 Matrix and the wound channels have been very even when shot through the chest, they seem to open at the same time and the organ damage has been even with exit holes all about 1.5-2 in.
Bullets pulled out of the berms at 1000 yards are opened up a little over half way. Personally I would not hesitate to put a 165 Matrix behind the shoulder of a moose but I'm very, very comfortable with these bullets!!!
__________________
High Fence, Low Fence, Stuck in the Fence, if I can Tag it and Eat it, it's Hunting!

"Pain is weakness leaving your body"
Reply With Quote
  #12  
Old 09-06-2012, 04:48 PM
Bronze Member
 
Join Date: Aug 2012
Posts: 95
Re: How i Test Ballistic Coefficients-Matrix 175gr

Good to know on the 165's!!

will start with .638 and see how they track to 500 and 700 yards. Going to try and get 2850 FPS out of them using H4831sc in my 270 Win.

Been reading lots about the jump sensitivity on VLD Bullets.

How much sensitivity are we talking??? if the weapon can shoot 1 MOA with factory loads, and 3/4MOA with basic hand loads, would the group blow up to say 1.5 MOA with a VLD??

Just want to get an idea how bad the groups swell with a VLD???
Reply With Quote
  #13  
Old 09-06-2012, 05:26 PM
Junior Member
 
Join Date: Apr 2012
Posts: 19
Re: How i Test Ballistic Coefficients-Matrix 175gr

I can't speak from experience just yet, but if I'm not mistaken the VLD's will require playing around with the seating depth to tighten your groups. There was an article written about playing around with the gap, but I can't seem to find it now.

Edit: disregard, I just read the 'jump sensitivity' part. Duh!
Reply With Quote
  #14  
Old 09-07-2012, 10:37 AM
Bronze Member
 
Join Date: Aug 2012
Posts: 95
Re: How i Test Ballistic Coefficients-Matrix 175gr

well, guess I will just have to jump in and see how it performs.

Dont have a precision mic, but with a 1-28 thread pitch...I should be able to get within +- .005

prolly start off with 53 ot 54 grains on 4831sc.

27 inch barrel

any other suggestions??
Reply With Quote
Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes


Similar Threads for: How i Test Ballistic Coefficients-Matrix 175gr
Thread Thread Starter Forum Replies Last Post
BALLISTIC COEFFICIENTS/Twist Rates 300spanker Rifles, Bullets, Barrels & Ballistics 26 08-30-2010 12:35 AM
Nosler ballistic coefficients accurate? mcseal2 Long Range Hunting & Shooting 6 07-23-2010 06:09 PM
G1 vs. G7 Ballistic Coefficients Newbie Rifles, Bullets, Barrels & Ballistics 2 06-16-2004 03:18 PM
ballistic coefficients? cdixon Rifles, Bullets, Barrels & Ballistics 34 08-28-2003 08:32 PM
Ballistic Coefficients Tested Jon A Rifles, Bullets, Barrels & Ballistics 3 07-15-2002 04:27 AM


All times are GMT -5. The time now is 09:20 PM.


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