Sako L461 (Vixen) barrel threads?

[SBS]

Any help on Barrel threads on a Sako Vixen? Can't seem to find any info.

 

[GenePoole]

Do you have one to check? My google fu turns up several possibilities: metric, SAE, or even Whitworth; depending on the vintage.

 

[Lucky Shooter]

Hopefully you'll get the correct metric thread from someone.

Many folks use 16 TPI successfully. I have two L46's which work with the 16 TPI.
Don't remember the tenon diameter.

I made a test stub to prove these actions would work with 16 TPI.

Here's hoping you get better info.

A. Weldy

 

[butchlambert]

My chart from Trinidad College of Gunsmithing says the tenon is .855 diameter, .845 long, and 16TPI.

 

[SBS]

My chart from Trinidad College of Gunsmithing says the tenon is .855 diameter, .845 long, and 16TPI.

That's the specs I have for the earlier L-46, but never before threaded for either the L-46 or L-461. I was concerned it might be metric, which I can't do. The L-57 action is 1.5mm x 25mm OD, while the L-579 is essentially a M70 thread - so my reason for the inquiry.

 

[SBS]

Hopefully you'll get the correct metric thread from someone.

Many folks use 16 TPI successfully. I have two L46's which work with the 16 TPI.
Don't remember the tenon diameter.

I made a test stub to prove these actions would work with 16 TPI.

Here's hoping you get better info.

A. Weldy

Thanks for the input.

 

[243winxb]

http://forum.accurateshooter.com/threads/sako-l461.3939504/ hope this helps.

 

[GenePoole]

Just my $0.02: the references that claim metric threads are probably wrong. 16 TPI works out to 1.588 mm so many claim that it is a 1.6mm thread, but 1.6 doesn't exist in any metric threading references I've seen. No lathe gearings I know of allow for it. Common metric pitches in this range are 1.3, 1.4, 1.5, 1.75, and 2.0. If I were a gambling man, I'd bet on 16 TPI.

 

[SBS]

Just my $0.02: the references that claim metric threads are probably wrong. 16 TPI works out to 1.588 mm so many claim that it is a 1.6mm thread, but 1.6 doesn't exist in any metric threading references I've seen. No lathe gearings I know of allow for it. Common metric pitches in this range are 1.3, 1.4, 1.5, 1.75, and 2.0. If I were a gambling man, I'd bet on 16 TPI.

Makes sense. My metric thread gage has 1.6, but I've not seen it elsewhere.

 

[SBS]

http://forum.accurateshooter.com/threads/sako-l461.3939504/ hope this helps.

That's a useful discussion. Missed it somehow in my search. Looks like 16 TPI works just fine.

Thanks for everyone's input.

 

[natdscott]

According to Otteson's seminal work on actual L-461 receivers and barrels, spec is 0.864"-16TPI with a 0.590" engagement.

 

[butchlambert]

According to Otteson's seminal work on actual L-461 receivers and barrels, spec is 0.864"-16TPI with a 0.590" engagement.

What in the "ell is .590 engagement?

 

[natdscott]

What in the "ell is .590 engagement?

Thread engagement..ie: tennon length.

 

[butchlambert]

Thread engagement..ie: tennon length.

You might want to check that. I measured a L461 last night at .845

 

[natdscott]

I'm not checking anything...don't own one, don't plan to. I do own the various publications of Stu Otteson though, and those thread engagement figures are a direct quote.

Perhaps he was speaking on the number of threads actually pulling rather than tennon length?

How much undercut did you have Butch? And/or, how much radius/chamfer is applied at the action face?

 

[butchlambert]

I'm not checking anything...don't own one, don't plan to. I do own the various publications of Stu Otteson though, and those thread engagement figures are a direct quote.

Perhaps he was speaking on the number of threads actually pulling rather than tennon length?

How much undercut did you have Butch? And/or, how much radius/chamfer is applied at the action face?

Undercut?? Are you saying thread relief? If you have no way to check and don't intend to check anything, fine. Now that you have cleared that up, the guys can make their own opinion.
I don't think I've given you a hard time, but It seems without info you are trying to piss on my shoes.

 

[sean68]

Butch,
They must not all be .845". The one sitting in front of me is .865"×16tpi with a tenon length of .795". William Hambly Clark's book shows .864x16tpi with a tenon length of .785"

 

[natdscott]

Undercut?? Are you saying thread relief? If you have no way to check and don't intend to check anything, fine. Now that you have cleared that up, the guys can make their own opinion.
I don't think I've given you a hard time, but It seems without info you are trying to piss on my shoes.

Butch, my shoes are dry, and I've no intent to aim at yours. I'm not a machinist, nor do I claim to be, but saying I am "without info" is bullshit. I do have a strong asshole radar.

I think you missed my smily face. Frankly, I don't really care to debate with you. I was just relating the information I have.

There WERE multiple generations, so your info doesn't mean I am incorrect, nor does it mean that the receiver in front of you is either.

I have no hard feelings about any of this, but I'm done here.

 

[Lucky Shooter]

Sako L461 extractor

Its been a while since I've had my hands on the L461------but----I think the
tip of the extractor portrudes past the bolt nose. This is definitely the case with the
L46's I have.

I'm a bit nervous about using a printed tenon length and think the distance
from the bolt face to the extractor tip should be measured.

The tenon length should be this measurement plus whatever clearance you feel
comfortable with.

Just one man's opinion.

A. Weldy

 

[sean68]

Sako L461 extractor

Its been a while since I've had my hands on the L461------but----I think the
tip of the extractor portrudes past the bolt nose. This is definitely the case with the
L46's I have.

I'm a bit nervous about using a printed tenon length and think the distance
from the bolt face to the extractor tip should be measured.

The tenon length should be this measurement plus whatever clearance you feel
comfortable with.

Just one man's opinion.

A. Weldy

I agree. There is more to it than just facing off the tenon at a particular length. There is clearance that needs to be cut for the extractor. It's not flat.