|
|
Joined: Dec 2008
Posts: 893
Campfire Regular
|
Campfire Regular
Joined: Dec 2008
Posts: 893 |
Rahtreelimbs:
If you noticed Swamp and I joined the board about the same time. After the first few hundred of his posts, none of which added any value to any of the topics, I just put him on "Ignore"
Pretty easy to see from those who've quote him in replies since 2008, after 8400 additional posts he still has never added anything of substance.
Life is too short to suffer fools - just put him on "Ignore".
|
|
|
|
|
Joined: Jan 2010
Posts: 66
Campfire Greenhorn
|
|
Campfire Greenhorn
Joined: Jan 2010
Posts: 66 |
Pressures had to have been very high for that to happen. I use 45k as my upper limit. If you go beyond that the action will loosen after a couple shots and the lever will try to open when you fire. The 336 action is proofed at 60k something, and my guess is that the pressure seen in the blown up gun in the link was beyond the proof pressure.
It is good practice to use the slowest burning powder that delivers the performance you want. With fast burning powders, an extra grain or two or a different batch can make a bigger difference than an extra grain or two of a slow powder. I choose powders that fill my case 95-105%. When loading to the "edge" at 45k I also hand weigh every load versus relying on a powder drop.
The more I build up a tolerance to recoil, the more I need to get my fix.
|
|
|
|
|
Joined: Sep 2007
Posts: 26,524
Campfire Ranger
|
|
Campfire Ranger
Joined: Sep 2007
Posts: 26,524 |
How would you know? You clearly don't know anything about anything. Boolean logic would follow that he in turn knows something about everything. Or something about something Or everything about something. or everything about everything.
|
|
|
|
|
Joined: Nov 2008
Posts: 11,342
Campfire Outfitter
|
|
Campfire Outfitter
Joined: Nov 2008
Posts: 11,342 |
You don't know $hit either. That's the norm here.
1st Special Operations Wing 1975-1983
919th Special Operations Wing 1983-1985 1993-1994
"Manus haec inimica tyrannis / Ense petit placidam sub libertate quietem" ~Algernon Sidney~
|
|
|
|
|
Joined: Nov 2010
Posts: 37,056
Campfire 'Bwana
|
Campfire 'Bwana
Joined: Nov 2010
Posts: 37,056 |
Swampy gets off his medicine every now and then. It'll pass.
DF
|
|
|
|
|
Joined: Jun 2006
Posts: 10,084
Campfire Outfitter
|
|
Campfire Outfitter
Joined: Jun 2006
Posts: 10,084 |
So, Ive given this a lot of thought, I like leading fot the problem.
Snake
That which does not kill us makes us stronger
Friedrich Nietzsche
|
|
|
|
|
Joined: Jan 2006
Posts: 5,074
Campfire Tracker
|
|
Campfire Tracker
Joined: Jan 2006
Posts: 5,074 |
You don't know $hit either. That's the norm here. Consider yourself at the top of the list!
|
|
|
|
|
Joined: Oct 2011
Posts: 95
Campfire Greenhorn
|
|
Campfire Greenhorn
Joined: Oct 2011
Posts: 95 |
Pressures had to have been very high for that to happen. I use 45k as my upper limit. If you go beyond that the action will loosen after a couple shots and the lever will try to open when you fire. The 336 action is proofed at 60k something, and my guess is that the pressure seen in the blown up gun in the link was beyond the proof pressure.
It is good practice to use the slowest burning powder that delivers the performance you want. With fast burning powders, an extra grain or two or a different batch can make a bigger difference than an extra grain or two of a slow powder. I choose powders that fill my case 95-105%. When loading to the "edge" at 45k I also hand weigh every load versus relying on a powder drop. a 45-70 Marlin is good for about 38 to 39K psi, while the .450 is good for close to 43K psi. A Winchester will be a little less. Shooting a 45-70 Marlin at 45K psi is an accident simply waiting to happen. The SAAMI spec for the 45-70 is 28K psi in modern firearms and much lower in the older stuff gary
|
|
|
|
|
Joined: Nov 2010
Posts: 37,056
Campfire 'Bwana
|
|
Campfire 'Bwana
Joined: Nov 2010
Posts: 37,056 |
As you know, the 45-70 has three published pressure ranges, the top being the Ruger #1 with certain Mausers even stronger. The Marlin '95's are in the second tier. I don't know which Winchester(s) you're talking about, but generally the '92 and clones are stronger than the 1894 Marlin. You see Rossi and other '92 clones chambered for .454 and similar, not Marlins. I think the 1886 Winchester clones will tolerate more pressure than the Marlin 1895. My BPCR 1885 clone will operate at near Ruger #1 levels without a problem. Those JMB designs are very strong.
DF
|
|
|
|
|
Joined: Sep 2006
Posts: 18,005
Campfire Ranger
|
|
Campfire Ranger
Joined: Sep 2006
Posts: 18,005 |
The three published pressure levels for the 45-70 are well known. As you say, the 1886 clones are the strongest of the lever guns for this caliber, and will handle pressures in the 50,000 psi range.
Doug Turnbull manufactures his 475 and 470 Turnbull rifles on 1886 clone actions. They are seriously strong lever actions.
"I'm gonna have to science the schit out of this." Mark Watney, Sol 59, Mars
|
|
|
|
|
Joined: Feb 2004
Posts: 7,295
Campfire Tracker
|
|
Campfire Tracker
Joined: Feb 2004
Posts: 7,295 |
The pressure levels for the 45-70 are well known yet Wild West Guns makes an altered for length only version of the Marlin 1895 called the 457 Wild West Mag that operates at 45,000 CUP..Do the conversion and you will be right at 48,000 PSI.
When a Marlin blows up,it isn't from just one round over pressure,it is usually from a barrel obstruction.Test were done by Freedom Arms for the 454 Casull operating at 65,000 PSI SAAMI with the Winchester '94 and Marlin '95..The Marlin failed first at rounds in the 62-63,000 PSI level with just 20 rounds through it.
It did not "Blow Up" it just broke with the action mangled to where it would not function anymore.
Jayco
|
|
|
|
|
Joined: Mar 2009
Posts: 781
Campfire Regular
|
|
Campfire Regular
Joined: Mar 2009
Posts: 781 |
The pressure levels for the 45-70 are well known yet Wild West Guns makes an altered for length only version of the Marlin 1895 called the 457 Wild West Mag that operates at 45,000 CUP..Do the conversion and you will be right at 48,000 PSI.
When a Marlin blows up,it isn't from just one round over pressure,it is usually from a barrel obstruction.Test were done by Freedom Arms for the 454 Casull operating at 65,000 PSI SAAMI with the Winchester '94 and Marlin '95..The Marlin failed first at rounds in the 62-63,000 PSI level with just 20 rounds through it.
It did not "Blow Up" it just broke with the action mangled to where it would not function anymore.
Jayco And the tiny little model 1892 Browning design Winchester handles 454s just fine in the Rossi/Puma. Old JB knew what he was doing! 
ken@the river
GO DUCKS!
|
|
|
|
|
564 members (007FJ, 1OntarioJim, 219 Wasp, 1beaver_shooter, 1_deuce, 224th, 54 invisible),
2,066
guests, and
1,161
robots. |
|
Key:
Admin,
Global Mod,
Mod
|
|
|
Forums81
Topics1,191,069
Posts18,463,542
Members73,923
| |
Most Online11,491
Jul 7th, 2023
|
|
|
|
