Long Range Hunting Online Magazine


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


Reply

Effect of Bullet Tipping on Terminal Performance

 
LinkBack Thread Tools Display Modes
  #1  
Old 09-11-2012, 07:41 AM
Gold Member
 
Join Date: Sep 2005
Location: Central AZ
Posts: 859
Effect of Bullet Tipping on Terminal Performance

From the outset, let's establish that there is a difference between meplat trimming and meplat tipping. The first process provides uniformity to the meplat making for a more consistent BC. Bullet tipping reduces the size of the meplat, or thickness of the jacket at the nose, as well as increasing angle at the nose. Trimming reduces the BC ever so slightly, while tipping increases BC slightly.

My question us this: Does tipping the bullet have a negative impact on the terminal performance of the bullet? Intuitively, I would think that tipping would make it more difficult for the hollow point to open up? Or perhaps just delay expansion a little longer? Did a couple of searches, but couldn't find much on changes in terminal performance.
Reply With Quote
  #2  
Old 09-11-2012, 04:49 PM
Platinum Member
 
Join Date: Feb 2010
Location: Gillette, WY
Posts: 2,393
Re: Effect of Bullet Tipping on Terminal Performance

I've read a little (very little) about that subject. One would tend to think your thought process is on the correct path. From what i've read & seen, meplat uniforming (I've been playing with one of these tools) enlarges the meplat & should enhance the quickness of the bullet's expansion as it increases the cross sectional are of of the meplat & the size of the hollow point. Pointing as your statement suggested should slow expansion as you are in essence reversing what meplat uniforming offers. I have seen some exceptional gains in Ballistic Coefficient reported after pointing certain bullets, especially the smaller ones 6mm etc.


I can't confirm or deny any of that. I've uniformed about 100 of my 300 SMK's just for giggles. They look great! Will they behave differently? Don't know yet but my initial shooting at 1100 yards (20-30 rounds) hasn't shown a noticable loss in BC. More testing will have to be conducted to very of course.

t
__________________
"I, however, view ethics as an individual decision. My ethics are mine - and I won't explain or justify them to anyone else. I seek nobody's approval, just that of my own conscience. "

Reply With Quote
  #3  
Old 09-11-2012, 09:15 PM
Platinum Member
 
Join Date: Dec 2008
Location: Northern Id.
Posts: 3,103
Re: Effect of Bullet Tipping on Terminal Performance

I just posted on this subject earlier tonight and didn't see this until now. I think you would be interested in the pics that I included. (long range bullet minimum expansion).....Rich
Reply With Quote
  #4  
Old 09-12-2012, 05:07 AM
Gold Member
 
Join Date: Sep 2005
Location: Central AZ
Posts: 859
Re: Effect of Bullet Tipping on Terminal Performance

elkaholic,

Great post. Confirms what I have been reading over the years about min. velocity. Did the Berger 215 have a trimmed meplat? What were your findings on min. expansion velocities for trimmed vs. std. factory meplat?
Reply With Quote
  #5  
Old 09-12-2012, 08:54 AM
Platinum Member
 
Join Date: Feb 2010
Location: Gillette, WY
Posts: 2,393
Re: Effect of Bullet Tipping on Terminal Performance

Rich, that was an informative read. Thanks for taking the time to do that. The SRX looks impressive to say the least. That test would be fun using the 300SMK uniformed & un-uniformed as well....
__________________
"I, however, view ethics as an individual decision. My ethics are mine - and I won't explain or justify them to anyone else. I seek nobody's approval, just that of my own conscience. "

Reply With Quote
  #6  
Old 09-12-2012, 10:27 AM
Platinum Member
 
Join Date: Dec 2008
Location: Northern Id.
Posts: 3,103
Re: Effect of Bullet Tipping on Terminal Performance

Quote:
Originally Posted by azsugarbear View Post
elkaholic,

Great post. Confirms what I have been reading over the years about min. velocity. Did the Berger 215 have a trimmed meplat? What were your findings on min. expansion velocities for trimmed vs. std. factory meplat?
Those were stock bullets. I have done testing with the meplat drilled out with a .040" and .055" drill bit which will aid expansion. I need to follow up with some silicon in the tip but the Hybrid has a very large cavity and I'm not sure if it will work or not?.....Rich
Reply With Quote
  #7  
Old 09-12-2012, 05:59 PM
Platinum Member
 
Join Date: Mar 2012
Location: ND
Posts: 2,537
Re: Effect of Bullet Tipping on Terminal Performance

Quote:
Originally Posted by elkaholic View Post
I need to follow up with some silicon in the tip but the Hybrid has a very large cavity and I'm not sure if it will work or not?.....Rich
What does the silicon do?
__________________

I'm 15
"Firearms are second only to the Constitution in importance; they are the peoples' liberty's teeth."
~George Washington

"The only advantage a light rifle has is weight, all other advantages go to the heavy rifle."
~ JE CUSTOM

"Dope that scope and tickle that giggle switch"

~Doublezranch

Biggest fail of 2014 so far... http://www.longrangehunting.com/foru...ea-ftf-128972/
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes


Similar Threads for: Effect of Bullet Tipping on Terminal Performance
Thread Thread Starter Forum Replies Last Post
Effect of bullet diameter (caliber) on terminal performance. grit Rifles, Bullets, Barrels and Ballistics 14 02-10-2012 03:34 PM
Meplat trimming & bullet tipping? joseph Reloading 23 04-13-2011 09:03 AM
Altering the HP meplat for terminal effect sscoyote Rifles, Bullets, Barrels and Ballistics 2 01-11-2010 04:06 PM
Bullet Terminal Performance Test - Want In? royinidaho Rifles, Bullets, Barrels and Ballistics 32 08-02-2008 11:53 AM
sectional density's effect on bullet performance sscoyote Rifles, Bullets, Barrels and Ballistics 3 08-03-2003 01:07 AM

Current Poll
Do you watch outdoor shows live or by recording them?
Always recorded - 14.09%
102 Votes
Mostly recorded - 24.31%
176 Votes
Sometimes recorded - 13.40%
97 Votes
Rarely or never recorded - 48.20%
349 Votes
Total Votes: 724
You may not vote on this poll.

All times are GMT -5. The time now is 02:38 AM.


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