|
S |
M |
T |
W |
T |
F |
S |
|
|
1
|
2
|
3
|
4
|
5
|
6
|
|
7
|
8
|
9
|
10
|
11
|
12
|
13
|
|
14
|
15
|
16
|
17
|
18
|
19
|
20
|
|
21
|
22
|
23
|
24
|
25
|
26
|
27
|
|
28
|
29
|
30
|
|
|
|
|
|
|
8 members (FallCreekFan, Argo44, lagopus, FlyChamps, earlyriser, geauga, 1 invisible),
1,133
guests, and
8
robots. |
|
Key:
Admin,
Global Mod,
Mod
|
|
|
Forums10
Topics38,469
Posts545,146
Members14,409
| |
Most Online1,335
Apr 27th, 2024
|
|
|
|
Joined: Jan 2006
Posts: 9,417 Likes: 314
Sidelock
|
OP
Sidelock
Joined: Jan 2006
Posts: 9,417 Likes: 314 |
Since I've always learned best with pictures  I cut the left barrel. The chamber was lengthened from 2 5/8" to 2 13/16". End of chamber WT at top 0.100" before to 0.090" after; start of forcing cone 0.127" to 0.100". At 4" top is .110" ![[Linked Image from photos.smugmug.com]](https://photos.smugmug.com/Barrel-Evaluations/Steel-Strength/i-7LHxtK8/0/526898f3/XL/Cast%20Steel%2011-XL.jpg)
|
|
|
|
|
Joined: Jan 2006
Posts: 9,417 Likes: 314
Sidelock
|
|
OP
Sidelock
Joined: Jan 2006
Posts: 9,417 Likes: 314 |
Sawed the 16g SAC barrel that was the victim of inexpert forcing cone lengthening and honing. ![[Linked Image from photos.smugmug.com]](https://photos.smugmug.com/Barrel-Evaluations/SAC-NDT/i-WQ7pbdn/0/14618bae/L/SAC%20%231-L.jpg) The chamber was still 2 9/16" but the wall thickness at the end of the chamber was .087" and at the forcing cone .098". The pilot put dents in the barrel, and long furrows in the bore; looking toward the breech ![[Linked Image from photos.smugmug.com]](https://photos.smugmug.com/Barrel-Evaluations/SAC-NDT/i-B53VmQs/0/8b8ccaa5/L/SAC%20%234-L.jpg) Barrel transected ![[Linked Image from photos.smugmug.com]](https://photos.smugmug.com/Barrel-Evaluations/SAC-NDT/i-BtrwwkD/0/847fb962/XL/SAC%2012-XL.jpg) Radiograph ![[Linked Image from photos.smugmug.com]](https://photos.smugmug.com/Barrel-Evaluations/SAC-NDT/i-tQ5v232/0/ed3b1f6f/XL/SAC%20XR%20%231-XL.jpg) The forward straight lucency is where the thinner tube was butt welded to the thicker breech section
|
|
|
|
|
Joined: Mar 2002
Posts: 7,718 Likes: 479
Sidelock
|
|
Sidelock
Joined: Mar 2002
Posts: 7,718 Likes: 479 |
People need to buy a Mec 600 jr, cut a few shells down and load proper length shells with reasonable pressures. This butchery, to shoot too long and way too high pressure loads in a gun is insane. You can still reload 12s for less than you can buy factory shells for most of the time. And factory shells are 10-11K psi so they can work an 1100, which is 2K more than most doubles were built to handle.
Last edited by KY Jon; 03/28/19 11:57 AM.
|
|
|
|
|
Joined: Jan 2002
Posts: 9,740 Likes: 97
Sidelock
|
|
Sidelock
Joined: Jan 2002
Posts: 9,740 Likes: 97 |
so then, what conclusion can one draw from this thread?
besides stan is a jerk...
and brent is child like...
Last edited by ed good; 01/04/24 05:05 PM.
keep it simple and keep it safe...
|
|
|
|
|
Joined: Jan 2004
Posts: 6,715 Likes: 415
Sidelock
|
|
Sidelock
Joined: Jan 2004
Posts: 6,715 Likes: 415 |
so then, what conclusion can one draw from this thread? Never ever buy a gun from you if it has lengthened chambers. Never.
_________ BrentD, (Professor - just for Stan) ![[Linked Image from i.imgur.com]](https://i.imgur.com/qclHjMQ.jpg)
|
|
|
|
|
Joined: Jan 2002
Posts: 13,149 Likes: 1147
Sidelock
|
|
Sidelock
Joined: Jan 2002
Posts: 13,149 Likes: 1147 |
so then, what conclusion can one draw from this thread? Different ones of us may draw slightly different conclusions, but you will draw none. That's because you always want others to do the thinking, and the leg work, for you. You do nothing in the way of research for yourself.
May God bless America and those who defend her.
|
|
5 members like this:
mc, graybeardtmm3, bushveld, John Roberts, BrentD, Prof |
|
|
|
|
Joined: Jan 2002
Posts: 9,740 Likes: 97
Sidelock
|
|
Sidelock
Joined: Jan 2002
Posts: 9,740 Likes: 97 |
gee stan, happy new year to you too...
keep it simple and keep it safe...
|
|
|
|
|
Joined: Feb 2002
Posts: 331 Likes: 6
Sidelock
|
|
Sidelock
Joined: Feb 2002
Posts: 331 Likes: 6 |
In one photo showing the breech scoring, isn't there a clear crack at about 12:00?
Tom Bryant, late of Cabelas, gave me a tip. Use your cell phone camera to snap a shot, then expand it to see stuff better.
It really works.
Joe
|
|
|
|
|
Joined: Jan 2006
Posts: 9,417 Likes: 314
Sidelock
|
|
OP
Sidelock
Joined: Jan 2006
Posts: 9,417 Likes: 314 |
Is this the image Joe? There could well be several cracks. They were not apparent on the radiograph, and if not deep, mag particle inspection would be unlikely to show them either. I think whatever is at the top is from the cleaning material ![[Linked Image from photos.smugmug.com]](https://photos.smugmug.com/Barrel-Evaluations/SAC-NDT/i-KPHHXVQ/0/111f6911/XL/SAC%20Cracks-XL.jpg)
|
|
|
|
|
Joined: Jan 2002
Posts: 11,377 Likes: 105
Sidelock
|
|
Sidelock
Joined: Jan 2002
Posts: 11,377 Likes: 105 |
Top one sure looks like a hair or a thread to me.
|
|
|
|
|
