Win M70 ejector adjustment (CRF-models)

[Ontario Hunter]

I am curious how OP's rifle ejects loaded cartridges. Are bullets also smacking into the receiver?

 

[farrokhrt]

]][emoji[emoji6]][emoji[emoji6][emoji6]][emoji[emoji6]]" data-quote="CBeck" data-source="post: 0" class="bbCodeBlock bbCodeBlock--expandable bbCodeBlock--quote js-expandWatch">

In my opinion, I would leave it alone as you’ve already noted, The force of the ejection is related to how fast and hard you cycle the bolt.

If you’re wanting to protect your brass for reloading, then don’t cycle the bolt as hard… but in a Hunting situation, I would rather have it clear my brass.

+

 

[EVR]

I have a G3 / HK91 semi auto build from a parts kit. Trust me, your brass aren't dented much. My rifle can mostly close a case mouth once in a while, then throws brass 30 feet. Just push a drift punch into case mouth so taper sort of rounds case mouth back open and then run thru sizer die. Have 6+ reloads on some brass with no issues, even without annealing neck. I wouldn't go filing on your rifle because of a little brass ding if it otherwise runs reliably.

Haha. Indeed!
HK 91's and Hakims are superb tools for returning cartridge brass to its original condition before the foundry got to work on it.

 

[cajunchefray]

Thanks, but the question is regarding the ejector, not the extractor.

Yes I stand corrected.

Within this thread, the combined function of the extractor with the ejector is addressed.
I would not mess with it.
Cases will be dented, but if they eject every single time, then you have reliability.

 

[cajunchefray]

Hello, Somnas,

Do NOT modify the Ejector. If anything, you may have too much Extractor Tension, but without having your rifle in front of me, that's impossible to say for sure. However, there is a such a thing as too much extractor tension.

Cajunchefray, we just recently (within the last 2 months) bought 2 new Super Grades and both guns, a 7mm-08 and a .30-06 came from the Factory with ZERO Extractor Tension. I'm an Armorer so adjusting them was easy enough, but only time will tell if the spring-steel their using is good, or not.

Good Luck to y'all,

@BobReed, thanks for that information on current production M70s extractors. I did not know that.
My 2008 M70 in 7mm Mauser has good extractor tension, and works.
A good testament that ALL new production rifles need to be carefully evaluated and adjusted as needed.

 

[EVR]

Hello, Somnas,

Do NOT modify the Ejector. If anything, you may have too much Extractor Tension, but without having your rifle in front of me, that's impossible to say for sure. However, there is a such a thing as too much extractor tension.

Cajunchefray, we just recently (within the last 2 months) bought 2 new Super Grades and both guns, a 7mm-08 and a .30-06 came from the Factory with ZERO Extractor Tension. I'm an Armorer so adjusting them was easy enough, but only time will tell if the spring-steel their using is good, or not.

Good Luck to y'all,

@BobReed: Do you know if any modern production "pre-64"-type M70 extractors will fit a pre-64?

 

[dogcat1]

Mine do that. Leave them alone and enjoy a fine shooting rifle. If you reload, then resize the entire case. No big deal. You want a "violent extraction" to be sure the case gets out of the way.

 

[Ontario Hunter]

Yes I stand corrected.

Within this thread, the combined function of the extractor with the ejector is addressed.
I would not mess with it.
Cases will be dented, but if they eject every single time, then you have reliability.

Unless it is a stainless rifle I would not want empty cases smacking against my gun's receiver "every single time," especially the sharp edge of case mouth. Only a matter of time, probably a very short time, before the receiver shows damaged finish.

I am fairly confident this is a spring tension issue which is easily resolved by slightly reshaping the extractor. I know they are spring steel but can't be terribly brittle or they would easily break under stress of normal operation. I was able to reshape my 98 Mauser extractor by simply applying pressure in hands. Always easy to return to original shape if needed.

 

[RR 314]

Haha. Indeed!
HK 91's and Hakims are superb tools for returning cartridge brass to its original condition before the foundry got to work on it.

What is crazy is one of my 91s will throw brass 25-30 feet, and if shooting prone, you can generally pick up all cases without moving your feet! . Good precision and accuracy on spent brass.

 

[One Day...]

Do not "adjust" anything...Somnas (I was tempted to write: "Do not mess up anything").

As previously mentioned several times in the thread, but it does not seem to be understood by everyone in the thread, cases coming back to hit the action and have their mouth dinged HAS NOTHING TO DO with either ejector length (plunger or blade, depending on action type) nor extractor tension. I am tempted to add: period.

As also previously mentioned, and from the beginning by CBeck, the sole cause for cases flying back to hit the action and have their mouth dinged is bolt rear movement speed. I am again tempted to add: period.

This is why, semi autos like the G3 bend their cases' mouth a lot more, because the bolt in semi auto mode moves back a lot faster than a manually operated bolt.

If you want to convince yourselves of this:

• Somnas, cycle your bolt slowly and you will see that your cases are not projected back against the rear of the action;
• Ontario Hunter, cycle your bolts briskly and you will see that the cases come back to hit the action (that is unless you have done so much "adjustment" to your rifles that their function has been altered...).

I can predict the outcome of "trimming the ejector": failure to eject...............................

 

[Ontario Hunter]

Do not "adjust" anything...Somnas (I was tempted to write: "Do not mess up anything").

As previously mentioned several times in the thread, but it does not seem to be understood by everyone in the thread, cases coming back to hit the action and have their mouth dinged HAS NOTHING TO DO with either ejector length (plunger or blade, depending on action type) nor extractor tension. I am tempted to add: period.

As also previously mentioned, and from the beginning by CBeck, the sole cause for cases flying back to hit the action and have their mouth dinged is bolt rear movement speed. I am again tempted to add: period.

This is why, semi autos like the G3 bend their cases' mouth a lot more, because the bolt in semi auto mode moves back a lot faster than a manually operated bolt.

If you want to convince yourselves of this:

• Somnas, cycle your bolt slowly and you will see that your cases are not projected back against the rear of the action;
• Ontario Hunter, cycle your bolts briskly and you will see that the cases come back to hit the action (that is unless you have done so much "adjustment" to your rifles that their function has been altered...).

I can predict the outcome of "trimming the ejector": failure to eject...............................

Well, I can jack my 98 Mauser's bolt as fast and hard as Superman and no empty cases hit the receiver. Never. Period. If the ejector location is in tune with the extractor tension, the empty cases will be ejected horizontally and at 90° from receiver no matter how much energy is imparted to bolt during cycling. Period. I know this because my 98's extractor did have inadequate tension and it did affect the angle of ejection until I tuned it. Sure, I can pull the bolt back slowly and the cases will barely eject but the angle of ejection does not change. Period.

And no, my Mauser does not fail to cycle. I have posted a YouTube video of me loading and cycling it flawlessly at brisk speed. And another video of it flawlessly snapping over on same four dummy rounds dropped in the chamber one after the other. All flawless and smooth as silk.

 

[Ontario Hunter]

Do not "adjust" anything...Somnas (I was tempted to write: "Do not mess up anything").

As previously mentioned several times in the thread, but it does not seem to be understood by everyone in the thread, cases coming back to hit the action and have their mouth dinged HAS NOTHING TO DO with either ejector length (plunger or blade, depending on action type) nor extractor tension. I am tempted to add: period.

As also previously mentioned, and from the beginning by CBeck, the sole cause for cases flying back to hit the action and have their mouth dinged is bolt rear movement speed. I am again tempted to add: period.

This is why, semi autos like the G3 bend their cases' mouth a lot more, because the bolt in semi auto mode moves back a lot faster than a manually operated bolt.

If you want to convince yourselves of this:

• Somnas, cycle your bolt slowly and you will see that your cases are not projected back against the rear of the action;
• Ontario Hunter, cycle your bolts briskly and you will see that the cases come back to hit the action (that is unless you have done so much "adjustment" to your rifles that their function has been altered...).

I can predict the outcome of "trimming the ejector": failure to eject...............................

I can also confirm that my 03A3 Springfield has never to the best of my knowledge extracted a case that has struck the receiver. Not once in sixty years no matter how hard or weakly I work the bolt. Period. And all three CRF rifles - Model 70, 98 Mauser, and 03A3 - employ basically the same ejector/extractor design.

 

[EVR]

What is crazy is one of my 91s will throw brass 25-30 feet, and if shooting prone, you can generally pick up all cases without moving your feet! . Good precision and accuracy on spent brass.

Indeed. The Danes actually produced a deflector for training exercises to minimize injuries to bystanding soldiers!!