Mosin Addiction....anyone else? - Page 2

Czubek · 03-28-2012, 11:46 AM

Quote:

Originally Posted by RetVet

The Mosin action can be a bitch to open after firing a 7.62x54 round. Would it not be worse with a 45-70?

Why do so many people seem to have that problem? I clean the chambers once and a while and have almost zero problems. A loose connecting bar (fork end) could cause a problem, but that's an easy fix.

Brian

RetVet · 03-28-2012, 12:15 PM

Every one of my Mosins exhibit this symptom and they are all squeaky clean. I believe even the Russian field manuals noted the proper way to open the bolt after firing was a firm upward slap to the bolt handle.

Rick in NY · 03-28-2012, 12:20 PM

Well, given that the base diameter (not rim) is almost the same (0.489 for the MN, 0.505 for the 45-70) the major factor of bolt thrust is then pressure.

The 7.62x54R runs at 57,000 psi, while the 45-70 goes to 28,000 (SAAMI specs)

That gives the Mosin 3,407# bolt thrust vs 1,785# bolt thrust for a 45-70.

Between just over half the bolt thrust and better QC on cutting the chamber, I don't forsee any issues opening it after a shot.

RetVet · 03-28-2012, 12:22 PM

Quote:

Originally Posted by Rick in NY

Well, given that the base diameter (not rim) is almost the same (0.489 for the MN, 0.505 for the 45-70) the major factor of bolt thrust is then pressure.

The 7.62x54R runs at 57,000 psi, while the 45-70 goes to 28,000 (SAAMI specs)

That gives the Mosin 3,407# bolt thrust vs 1,785# bolt thrust for a 45-70.

Between just over half the bolt thrust and better QC on cutting the chamber, I don't forsee any issues opening it after a shot.

Good point.

Rick in NY · 03-28-2012, 12:24 PM

No problem, and don't ever hesitate to warn me that I may have overlooked some issue somewhere. I'd much rather be reminded 99 times of something that I was already aware of than to overlook that one important detail that could be the difference between a good shot and a ka-boom.

Czubek · 03-28-2012, 12:41 PM

Quote:

Originally Posted by RetVet

Every one of my Mosins exhibit this symptom and they are all squeaky clean. I believe even the Russian field manuals noted the proper way to open the bolt after firing was a firm upward slap to the bolt handle.

Try tightening up the fork end of the connecting bar. Take the slack out of it. Believe it or not, that does work, sometimes.

Brian

Rew · 03-28-2012, 03:02 PM

You very well could be right right Czubek. But I don't have any idea what the "fork end of the connecting bar" is. I do know the bolt handle is too short to provide much leverage. Considering it's a cock on opining action, and a rimmed cartridge which is harder to extract and a really short bolt handle, it can be rather hard to work the bolt some times.

bounce · 03-28-2012, 11:18 PM

I've got it.

Boris · 03-28-2012, 11:29 PM

I own 2,a 1929 (I think) 91/30 and a 42 M38 with a M44 lammy stock,,both bolts seems to lock up on em too,I actually tried what Brian is describing with the bolts and it seemed to help,I took the bolt apart on my 91/30 accidently at first and cleaned it very thourghly and that also seemed to help,they were very thick with grease and I cleaned it all out and sprayed silicone lubricant on it instead,problem solved,,at least for now,,ok rifles I guess but I would trade 10 of em for a Swedish Mauser,,20 if the mauser had a tiger striped stock

DirtySteve · 03-29-2012, 03:53 PM

Gotta be Russian about it when working the bolt.

bounce · 03-29-2012, 11:04 PM

treat her like a woman.

yyz · 03-29-2012, 11:20 PM

i don't know if this qualifies as having a mosin addiction, but i once did the happy dance in the fargo nd gander mountain when i found an izhevsk m44 with a 1943 date. at the moment i have 10 mn of various types. hmm i need a couple more....

TinmanIA · 03-30-2012, 12:28 AM

I have virtually no action issues when using Winchester white box. Silver Bear is a little tricky, and Wolf is a bieoch to open the bolt up after firing.

Longcolt6 · 03-31-2012, 10:26 PM

Yep,I got the mosin cravings , dont know why? just pick one up at the gun show last week, it felt good. Then I started doing my homework and study on em, now I cant stop. Felt like an old kentucky long gun when I picked it up. the dealer at the show let me go thru the 10 or 12 boxes he had. I pick a 1939 91/30 Tula, round reciever mainly looking at the wood grain of the stock, now all the hisory behind those old Dragoons has got me hooked. I may have a couple more before my curiosity subsides??

Rew · 04-01-2012, 03:11 AM

Good for you Harry, they are a good rifle, they were built for Russian peasant troops. They are very simple and robust. The 7.62x54R is in the 30-06 class. This round is still used today in belt fed machine guns and Russian sniper rifles. For a round introduced (if I'm correct here) in 1891, that's a pretty good career.

03-28-2012, 12:15 PM	#17
RetVet Statistical Error Join Date: Mar 2006 Location: Homeless Posts: 43,653	Every one of my Mosins exhibit this symptom and they are all squeaky clean. I believe even the Russian field manuals noted the proper way to open the bolt after firing was a firm upward slap to the bolt handle. __________________ ^^^ For entertainment purposes. Use only as directed. ^^^ III

03-28-2012, 12:20 PM	#18
Rick in NY Resident Nuisance Join Date: Mar 2011 Location: NY Finger Lakes Posts: 718	Well, given that the base diameter (not rim) is almost the same (0.489 for the MN, 0.505 for the 45-70) the major factor of bolt thrust is then pressure. The 7.62x54R runs at 57,000 psi, while the 45-70 goes to 28,000 (SAAMI specs) That gives the Mosin 3,407# bolt thrust vs 1,785# bolt thrust for a 45-70. Between just over half the bolt thrust and better QC on cutting the chamber, I don't forsee any issues opening it after a shot. __________________ Great minds think alike, but so do equally disturbed ones...

03-28-2012, 11:29 PM	#24
Boris Senior Member Join Date: Jan 2009 Location: N Michigan Posts: 11,032	I own 2,a 1929 (I think) 91/30 and a 42 M38 with a M44 lammy stock,,both bolts seems to lock up on em too,I actually tried what Brian is describing with the bolts and it seemed to help,I took the bolt apart on my 91/30 accidently at first and cleaned it very thourghly and that also seemed to help,they were very thick with grease and I cleaned it all out and sprayed silicone lubricant on it instead,problem solved,,at least for now,,ok rifles I guess but I would trade 10 of em for a Swedish Mauser,,20 if the mauser had a tiger striped stock __________________ The Constitution is not an instrument for the government to restrain the people, it is an instrument for the people to restrain the government - lest it come to dominate our lives and interests.” Patrick Henry

03-29-2012, 11:20 PM	#27
yyz Senior Member Join Date: Jul 2010 Location: UP of MICH Posts: 1,816	i don't know if this qualifies as having a mosin addiction, but i once did the happy dance in the fargo nd gander mountain when i found an izhevsk m44 with a 1943 date. at the moment i have 10 mn of various types. hmm i need a couple more.... __________________ "if you can't buy off a merc who can you trust?"

03-30-2012, 12:28 AM	#28
TinmanIA Demon of the Midwest Join Date: Feb 2010 Location: In a room with no windows. Posts: 4,118	I have virtually no action issues when using Winchester white box. Silver Bear is a little tricky, and Wolf is a bieoch to open the bolt up after firing. __________________ Don't you ever stand for that sort of thing. Someone ever tries to kill you, you try to kill 'em right back. 3% Throw Me To the Wolves, I Will Come Back Leading The Pack

03-28-2012, 12:24 PM	#20
Rick in NY Resident Nuisance Join Date: Mar 2011 Location: NY Finger Lakes Posts: 718	No problem, and don't ever hesitate to warn me that I may have overlooked some issue somewhere. I'd much rather be reminded 99 times of something that I was already aware of than to overlook that one important detail that could be the difference between a good shot and a ka-boom.

03-28-2012, 03:02 PM	#22
Rew Junior Member Join Date: Mar 2006 Location: Colorado Posts: 9,710	You very well could be right right Czubek. But I don't have any idea what the "fork end of the connecting bar" is. I do know the bolt handle is too short to provide much leverage. Considering it's a cock on opining action, and a rimmed cartridge which is harder to extract and a really short bolt handle, it can be rather hard to work the bolt some times.

03-28-2012, 11:18 PM	#23
bounce Senile Member Join Date: Aug 2007 Location: 7310 ft .002 mach :N AZ Posts: 2,463	I've got it.

03-29-2012, 03:53 PM	#25
DirtySteve Senior Member Join Date: Aug 2009 Posts: 4,798	Gotta be Russian about it when working the bolt.

03-29-2012, 11:04 PM	#26
bounce Senile Member Join Date: Aug 2007 Location: 7310 ft .002 mach :N AZ Posts: 2,463	treat her like a woman.

03-31-2012, 10:26 PM	#29
Longcolt6 Member Join Date: Dec 2009 Location: Ga. Posts: 742	Yep,I got the mosin cravings , dont know why? just pick one up at the gun show last week, it felt good. Then I started doing my homework and study on em, now I cant stop. Felt like an old kentucky long gun when I picked it up. the dealer at the show let me go thru the 10 or 12 boxes he had. I pick a 1939 91/30 Tula, round reciever mainly looking at the wood grain of the stock, now all the hisory behind those old Dragoons has got me hooked. I may have a couple more before my curiosity subsides?? __________________ "Speak, Americans...I will not lie to you; do not lie to me."~ Cochise "Those who hammer their guns into plows will plow for those who do not" ~ Thomas Jefferson "The two enemies of the people are criminals and goverment, so let us tie the second down with the chains of the Constitution so that the second will not become the legal version of the first" ~ Thomas Jefferson

04-01-2012, 03:11 AM	#30
Rew Junior Member Join Date: Mar 2006 Location: Colorado Posts: 9,710	Good for you Harry, they are a good rifle, they were built for Russian peasant troops. They are very simple and robust. The 7.62x54R is in the 30-06 class. This round is still used today in belt fed machine guns and Russian sniper rifles. For a round introduced (if I'm correct here) in 1891, that's a pretty good career.