Modern Sporting Rifle Evolution
Sign up Calendar Latest Topics
 
 
 


Reply
  Author   Comment  
JBFA

Avatar / Picture

Industry Partner
Registered:
Posts: 2,413
Reply with quote  #1 
So, I went to a local shoot this weekend at my home range and one of my friends asked me to take his upper apart and evaluate the damage. "Ya, there's lots, i said". Short story and the series of mistakes made, 458 Socom, he was testing subsonics, A, without a chronograph and B, took some load data he found online and actually started lower than what he found. I guess the biggest mistake is he should have just called me. Needless to say, he knows the error and I'm just glad nobody got hurt. I told him if he would have looked at the forum before loading subs, I did a baseline tutorial with a soft warning that would have saved a Wilson Combat barrel.
Remember, follow basic rules of subsonic loading(if you dont know them, ASK, or look them up)

Attached Images
jpeg 20181020_134333.jpg (2.31 MB, 32 views)
jpeg 20181020_134338.jpg (2.31 MB, 36 views)
jpeg 20181020_134541.jpg (2.18 MB, 39 views)
jpeg 20181020_134545.jpg (2.89 MB, 36 views)


__________________
JB'sFirearms,LLC 07/02 



 

0
honeycomb

Avatar / Picture

MSR Enthusiast
Registered:
Posts: 451
Reply with quote  #2 
whoops a daisy
__________________
As a nation and a culture, we are already compromised. You however, are not. Act accordingly.
0
Dvalin

Avatar / Picture

Gold Contributor
Registered:
Posts: 349
Reply with quote  #3 
Yeeeoowww!
0
Bajabusdoc

Avatar / Picture

Gold Contributor
Registered:
Posts: 860
Reply with quote  #4 
Holy split Batman..what a rupture!
0
Omega

Avatar / Picture

MSR Enthusiast
Registered:
Posts: 239
Reply with quote  #5 
Let me guess, squib with a follow up? Glad there were no human injuries, but I bet this lesson will never be forgotten.
__________________
"Freedom is the sure possession of those alone who have the courage to defend it." ~Pericles~
0
Nomadic

Avatar / Picture

Gold Contributor
Registered:
Posts: 456
Reply with quote  #6 
Those pictures are amazing. We all know how much pressure is involved as far as numbers, but i think we sometimes forget what those numbers actually mean in the real world. When you stop to think what it would take to split a barrel like that, it is sobering
0
JBFA

Avatar / Picture

Industry Partner
Registered:
Posts: 2,413
Reply with quote  #7 
Quote:
Originally Posted by Nomadic
Those pictures are amazing. We all know how much pressure is involved as far as numbers, but i think we sometimes forget what those numbers actually mean in the real world. When you stop to think what it would take to split a barrel like that, it is sobering

That's why I thought I'd put them up.

__________________
JB'sFirearms,LLC 07/02 



 
0
Cabob

Gold Contributor
Registered:
Posts: 290
Reply with quote  #8 
Wow, glad no one was hurt!
0
txcoder

Avatar / Picture

Gold Contributor
Registered:
Posts: 458
Reply with quote  #9 
Expensive lesson learned, but it could have been much worse. Hopefully something we can all be reminded of.
__________________
Programmer/Analyst
NRA Benefactor Life Member
Texas Bullet Pens
0
muellerdeal

Senior Member
Registered:
Posts: 84
Reply with quote  #10 
oh wow! sobering right there!
0
RangerJoe

Avatar / Picture

Administrator
Registered:
Posts: 4,626
Reply with quote  #11 
JB - Thanks for posting these.  That's more than duct-tape and bailing wire can patch.  Was that a 2-round "event"?

Should be mandatory viewing for everyone starting with rifle subsonics! 

__________________
Sua Sponte | Ranger Joe
0
JBFA

Avatar / Picture

Industry Partner
Registered:
Posts: 2,413
Reply with quote  #12 
Quote:
Originally Posted by RangerJoe
JB - Thanks for posting these.  That's more than duct-tape and bailing wire can patch.  Was that a 2-round "event"?

Should be mandatory viewing for everyone starting with rifle subsonics! 

I forgot to mention the other Big mistake was that he "heard something different in the last round" but brushed it off, instead of checking!

__________________
JB'sFirearms,LLC 07/02 



 
0
RangerJoe

Avatar / Picture

Administrator
Registered:
Posts: 4,626
Reply with quote  #13 
Don't 'ya just HATE it when the 2nd (or 3rd) error magnifies those immediately preceding by about 10,000 times?  [nono]
__________________
Sua Sponte | Ranger Joe
0
Jaron

MSR Enthusiast
Registered:
Posts: 219
Reply with quote  #14 
Quote:
Originally Posted by Nomadic
Those pictures are amazing. We all know how much pressure is involved as far as numbers, but i think we sometimes forget what those numbers actually mean in the real world. When you stop to think what it would take to split a barrel like that, it is sobering

Yep, in paintball you learn real quick the damage a mishandled 4500 psi tank can cause.  With firearms, you often deal with 10x that pressure, or even more.

__________________
Always fear the man with nothing to lose.
0
ThatDude

Member
Registered:
Posts: 3
Reply with quote  #15 
My google-fu is weak. [tongue] What are the basic rules of subsonic loading? [confused]
0
MDWS

Avatar / Picture

ADMINISTRATOR
Registered:
Posts: 5,670
Reply with quote  #16 
Quote:
Originally Posted by ThatDude
My google-fu is weak. [tongue] What are the basic rules of subsonic loading? [confused]


The opposite of supersonic loading...

Supersonic:  Start lower and work up

Subsonic loading: Start higher and work down

__________________

Don't mistake kindness for weakness...

We are charged with upholding the constitution, from all threats, foreign or domestic, and we will bear true faith and allegiance to the same.

-Mark
0
Jaron

MSR Enthusiast
Registered:
Posts: 219
Reply with quote  #17 
^^^

Those pics show the dangers of what's called a squib load.  The charge was too low to push the bullet fully out of the barrel.  If the shooter is not paying proper attention ( as mentioned, he heard something different that round but didn't inspect it ), another shot is fired when the barrel is blocked, and you see the results of that.

About the only thing worse I can think of is called a 12-20 combo in a shotgun.

__________________
Always fear the man with nothing to lose.
0
RangerJoe

Avatar / Picture

Administrator
Registered:
Posts: 4,626
Reply with quote  #18 
Quote:
Originally Posted by MDWS
Supersonic:  Start lower and work up

Subsonic loading: Start higher and work down

And ALWAYS - ALWAYS STOP and inspect when something doesn't sound/feel right. A large percentage of accidents are the result of the 2nd or 3rd sequential error.  Just like this shooter... I can't tell you how many times I've heard people say "... well, the shot before this didn't seem right, but..."

__________________
Sua Sponte | Ranger Joe
0
battle rattle

MSR Enthusiast
Registered:
Posts: 379
Reply with quote  #19 
Quote:
Originally Posted by ThatDude
My google-fu is weak. [tongue] What are the basic rules of subsonic loading? [confused]


the post / thread is pinned in the 277 Wolverine Load Data and Handloading Techniques section

https://mdws.forumchitchat.com/post/warning-about-loading-subs-please-read-7291141?pid=1303065844

maybe add "Start From A Known Safe Load And Work Down .... "

and use a chronograph yada yada yada, if you can afford a can you can afford a chrono
0
Previous Topic | Next Topic
Print
Reply

Quick Navigation:

Easily create a Forum Website with Website Toolbox.