|
Forums46
Topics538,074
Posts9,732,661
Members87,065
| |
Most Online25,604
Feb 12th, 2024
|
|
|
 Ammo question
#9025964
03/28/24 05:30 PM
|
Joined: Aug 2011
Posts: 1,704
Ronnie Oneal
OP
Pro Tracker
|
|
OP
Pro Tracker
Joined: Aug 2011
Posts: 1,704 |
What is TUMBLE ON IMPACT ammo ?
|
|
|
|
Re: Ammo question
[Re: Ronnie Oneal]
#9026453
03/29/24 05:25 PM
|
Joined: Dec 2011
Posts: 14,282
Ramsey
Pepe' Le Pew
|
|
Pepe' Le Pew
Joined: Dec 2011
Posts: 14,282 |
TOI - bullets will tumble after piercing the skin and hut vitals causing a greater wound.
Big Beckett!!
|
|
|
|
Re: Ammo question
[Re: Ronnie Oneal]
#9026484
03/29/24 06:16 PM
|
Joined: Apr 2013
Posts: 8,494
freerange
THF Trophy Hunter
|
|
THF Trophy Hunter
Joined: Apr 2013
Posts: 8,494 |
They are designed to do that??
At some point in life its time to quit chasing the pot of gold and just enjoy the rainbow. FR
Keep your gratitude higher than your expectations. RWH
|
|
|
|
Re: Ammo question
[Re: Ronnie Oneal]
#9026517
03/29/24 07:48 PM
|
Joined: Sep 2022
Posts: 456
duffas
Bird Dog
|
|
Bird Dog
Joined: Sep 2022
Posts: 456 |
Typical 223 Mil ammo. Fast spin rate causes tumbling when impacting target. Like a tumbling gyro, excess spin energy causes the trajectory to change RAPIDLY when NORMAL trajectory is slightly deviated. Was a design goal for 223 NATO stuff - injure vs kill enemy. So change from 12:1 to 7:1 twist. Solution to non-expanding UN requirement for Mil ammo. Bullet goes straight till it hits something, then goes crazy.
|
|
|
|
Re: Ammo question
[Re: Ronnie Oneal]
#9026538
03/29/24 08:47 PM
|
Joined: Nov 2011
Posts: 3,639
DStroud
Extreme Tracker
|
|
Extreme Tracker
Joined: Nov 2011
Posts: 3,639 |
This doesn’t make sense to me. Not sure I am buying what they are selling as there is no way to accurately predict how the bullet will react once hitting its target. Too many variables so bullet could just pencil right thru? Is it velocity dependent or spin rate sensitive just doesn’t seem like a very dependable solution to exactly what problem?
"Anyone taking up handloading necessarily plays with unknown factors and takes chances. But so does anyone who drives a car,goes to a cocktail party,eats in a restaurant,or gets married."
Jack O'Connor 1963
|
|
|
|
Re: Ammo question
[Re: Ronnie Oneal]
#9026542
03/29/24 09:08 PM
|
Joined: Jan 2009
Posts: 19,258
Judd
#1 Creedmoor Fan
|
|
#1 Creedmoor Fan
Joined: Jan 2009
Posts: 19,258 |
This is one of the things that I geek out about quite a bit. I've watched hours and hours of late nite videos of ballistic gel stuff. Lots of bullets (ones that are very popular) tumble and are consistent at tumbling. There are a ton of those videos on YouTube...check them out, it's very educational. I've even went so far as to consider doing some my own ballistic gel testing...but that pesky thing called time just doesn't fit all this cool stuff in.
Don't let your ears hear what your eyes didn't see, and don't let your mouth say what your heart doesn't feel
|
|
|
|
Re: Ammo question
[Re: Ronnie Oneal]
#9026549
03/29/24 09:31 PM
|
Joined: May 2007
Posts: 1,225
papa45
Pro Tracker
|
|
Pro Tracker
Joined: May 2007
Posts: 1,225 |
The M16 was relatively new when I was in Viet Nam. As I recall, the high-velocity 5.56 "tumbling bullet" that caused great devastation was part of the hype to sell the foot soldier on this new toy rifle.
|
|
|
|
Re: Ammo question
[Re: Judd]
#9026561
03/29/24 10:03 PM
|
Joined: Apr 2013
Posts: 8,494
freerange
THF Trophy Hunter
|
|
THF Trophy Hunter
Joined: Apr 2013
Posts: 8,494 |
This is one of the things that I geek out about quite a bit. I've watched hours and hours of late nite videos of ballistic gel stuff. Lots of bullets (ones that are very popular) tumble and are consistent at tumbling. There are a ton of those videos on YouTube...check them out, it's very educational. I've even went so far as to consider doing some my own ballistic gel testing...but that pesky thing called time just doesn't fit all this cool stuff in. Judd "watches hours and hours of late nite videos of ballistic gel stuff". hmmmmm.....
At some point in life its time to quit chasing the pot of gold and just enjoy the rainbow. FR
Keep your gratitude higher than your expectations. RWH
|
|
|
|
Re: Ammo question
[Re: duffas]
#9026593
03/30/24 12:44 AM
|
Joined: Jun 2015
Posts: 5,176
scottfromdallas
THF Trophy Hunter
|
|
THF Trophy Hunter
Joined: Jun 2015
Posts: 5,176 |
Typical 223 Mil ammo. Fast spin rate causes tumbling when impacting target. Like a tumbling gyro, excess spin energy causes the trajectory to change RAPIDLY when NORMAL trajectory is slightly deviated. Was a design goal for 223 NATO stuff - injure vs kill enemy. So change from 12:1 to 7:1 twist. Solution to non-expanding UN requirement for Mil ammo. Bullet goes straight till it hits something, then goes crazy. I always heard the opposite. The slower twist barrels made the bullet barely stable in flight which caused the bullet to tumble at impact. The switch to a faster twist reduced tumbling.
|
|
|
|
Re: Ammo question
[Re: Ronnie Oneal]
#9026601
03/30/24 01:12 AM
|
Joined: Jan 2009
Posts: 19,258
Judd
#1 Creedmoor Fan
|
|
#1 Creedmoor Fan
Joined: Jan 2009
Posts: 19,258 |
free…don’t think we’re talking about the same thing lol This guy does a lot and he’s firmly against tumbling bullets.
Don't let your ears hear what your eyes didn't see, and don't let your mouth say what your heart doesn't feel
|
|
|
|
Re: Ammo question
[Re: Ronnie Oneal]
#9026766
03/30/24 04:01 PM
|
Joined: Sep 2022
Posts: 456
duffas
Bird Dog
|
|
Bird Dog
Joined: Sep 2022
Posts: 456 |
'slower twist barrels made the bullet barely stable in flight'
As does too slow a bullet for twist. I've got a target from 40sw of bullets hitting sideways @ 7 yds. It's still a gyro problem. Change a gyro rotational axis and it wants to go 90 degrees to last path. Over-spin and you get enough rotational energy for the bullet to actually change path.
|
|
|
|
Re: Ammo question
[Re: Ronnie Oneal]
#9027266
03/31/24 10:24 PM
|
Joined: Jun 2011
Posts: 33,988
Buzzsaw
THF Celebrity
|
|
THF Celebrity
Joined: Jun 2011
Posts: 33,988 |
The left believe they all tumble and are very cruel to use the cop-killa bullets
SPACE FOR RENT
|
|
|
Moderated by bigbob_ftw, CCBIRDDOGMAN, Chickenman, Derek, DeRico, Duck_Hunter, hetman, jeh7mmmag, JustWingem, kmon11, kry226, kwrhuntinglab, Payne, pertnear, rifleman, sig226fan (Rguns.com), Superduty, TreeBass, txcornhusker
|
