stuck bolt assembly

[foxx]

I have a Savage 12FCv .223 with a stuck bolt. There is a spent case in the chamber, and the bolt will lift, but will not draw back. Gunsmith says the Case may have ruptured and is causing it to stick... he is attempting to remove it.

My question is this: I removed the ejector pin/plunger because someone told me it may shoot more accurately if I reduced the tension on the ejector spring... rather than reducing the spring tension by grinding it town a bit, I removed the whole plunger and retaining pin. I then fired 12 rounds without issue. Now it is stuck. Did I do something stupid? Might I have damaged it?

Any ideas / advice is appreciated.

[thomae]

The pin/plunger is the ejector, not the extractor. It's what pushes your spent brass to the side so it falls out the loading/ejection port.
You may have a primary extraction issue. A shim inserted between your bolt handle ramp (on the side opposite the bolt handle) and the rear baffle might help you pull the brass loose.

If it were me, I'd probably push a wooden dowel down the barrel and bang on it with a hammer once I knew the bolt was lifted all the way up.

[foxx]

thanks, Thomae. Not sure I understand all you are telling me, but I also noticed the front baffle on the bolt appeared to be backed-out somehow as if it was loose from the bolt because it could be clearly seen along the ejection port even when the bolt was closed. Not sure I described that properly. :)

[thomae]

A picture or two might help a whole lot.

What you are describing might be normal. The .223 baffle has an extension that keeps the bolt from being pulled back too far.

[stangfish]

You may have a primary extraction issue. A shim inserted between your bolt handle ramp (on the side opposite the bolt handle) and the rear baffle might help you pull the brass loose.

If it were me, I'd probably push a wooden dowel down the barrel and bang on it with a hammer once I knew the bolt was lifted all the way up.

What Thomae was telling you to do is close the bolt. Place a shim between the rear of the action and the rear baffle. When you lift the bolt up the tolerence or slack is taken up and the ramp on the bolt will utilize the ramp on the rear baffle more effectively, possibly moving the case enough(primary extraction) to be able to open the bolt.

If that does not help making sure the bolt is open all of the way you could either use a dowel rod or a cleaning rod and insert it through the muzzle very carefully and tap on the end to push the cartridge back. A light taping on the bolthandle in the opening direction is anothr thing to try. Remember anytime you use a hammer it is with care and thought.

[BillPa]

thanks, Thomae. Not sure I understand all you are telling me

Here is a good video demonstrating short/late primary extraction and using a shim to verify it. The only difference, I place the shim between the bridge and baffle.


http://www.youtube.com/watch?v=x-1ddHYW6wA

Bill

[foxx]

Cool. That was easy! Well, I should have sought help from you all before leaving it with the 'smith.

As for the extended baffle... I hadn't noticed it before, and it didn't make sense to me that it could be different than my others.

Frankly, it bothers me a bit that I hadn't noticed. Oh, well.
Thanks.

[thomae]

Cool. That was easy! Well, I should have sought help from you all before leaving it with the 'smith. So are we to understand that you retrieved your rifle from the smith and fixed the problem?


What Thomae was telling you to do is . . . Thanks for clarifying and explaining what I meant. Seriously (no sarcasm intended). Upon rereading my post, it was a bit brief and your amplification helped foxx to understand better.

[foxx]

No, THomae, I did not retrieve it. At the time I thought it was worse than it is and did not think I had the tools, knowledge or competitence to fix it myself. I wish I hadn't left it with them, but now that I have I will not retrieve it. I suppose some day I will need their expertise and skills and will be happy if they are available to serve me. In the meantime, I an okay with paying a bit here and there if it keeps them in business and me shooting until I have the experience to fix stuff myself. I am okay with that, I guess. Having said that, I suppose next time I have a problem I will ( might?) not panic, and seek help from you all first!

[thomae]

I have no problem with you supporting your LGS. It never hurts to be friends with an expert.
Make sure you get your gunsmith to tell you what he did to fix it, or what the problem really was. We're offering suggestions, but of course, without looking and "playing" with your rifle there is no way to know if we DID come up with the right answer.

Let us know how this turns out.

[stangfish]

Look at the bright side, you will now know if your smith is taking advantage of you. Also you can talk the lingo and comprehend what needed to be done.

[foxx]

ok, guys, I got my rifle back. I was not able to discuss the problem/fix with the smith directly. However, written notes on the repair order said "the handload appeared to be quite hot. also, Lapua and Norma brass is .003" larger in the web area to better fill factory chambers, in some cases the brass is too large for a chamber and can cause this to happen."

My eye sees no sign of high pressure other than the previous round had some black soot around the primer. If there is any "cratering"on any of the others, it is VERY slight. I would not say there is.

I am using 69 g Sierra Matchkings , Fed 205 primers (small rifle), 23.2 g of Varget, seated just shy of the lands. Brass was 2x fired, neck sized only.

I do not know what he did to remove the case, and there appears to be no damage whatsoever. The bottom of the case does measure 0.374" on my Lapua brass... he test-fired 3x using Remington factory ammo, those empty brass measure 0.371" at bottom.

Maybe I should reduce loads and "bump" the shoulders back?

[CharlieNC]

Your load sounds conservative. Using Laupa brass in my 6BR, it is necessary for me to FL size every time. Necksizing them alone results in a tight bolt, and headspace measurements show the shoulders are stretching every time. Strange that this is the norm on my 6BR which is my best barrel (CBI) and brass (Lapua) while for other rifles necksizing has been adequate so far. Maybe it has a tighter chamber? Try FL sizing.

[dolomite_supafly]

I shoot 69 SMK's all the time. My load is 24.5 grains of Varget so yours is well under the max and actually under the minimum.

Have you set the barrel back any? As in have you loosened the barrel and set the headspace on your brass?

[foxx]

Have you set the barrel back any? As in have you loosened the barrel and set the headspace on your brass?[/QUOTE]

No, I have not done that. Are you suggesting I do so?


However, I had another, more experienced handloader tell me the primers were flattened. So he agreed (with the LGS) that they showed signs of excessive pressure. I do not know why. I have bumped the shoulders back and am trying lower charges.

[dolomite_supafly]

Are you 100% sure you loaded Varget? I have loaded 69 SMK's to over 25 grains of Varget and never had pressure signs like you describe. I also neck sized and never had an issue. Pretty sure Federal primers are known for being soft and that may be why they look like excessive pressure but are not.

I have literally loaded thousands of rounds using 69 SMK's and Varget using the data above, 24.5 grains. I have shot them in several different bolt guns as well as a few AR15's and I have never seen signs of pressure, ever. I have used CCI400, CCI41, R7.5's, Wolf SRM and Tula SRM with that load. I never used Federal because I heard they were soft.

I am not saying to reset your headspace. I was just curious whether you had or not.

Are you trimming your cases back below 1.76? If not then what might be happening is the throat is keeping the case mouth from opening and releasing the bullet. In some extreme cases the throat actual crimps the case mouth to a point the bullet is even harder to release out of the case. Either of these conditions can cause excessive pressures from a seemingly light load. I generally trim my cases to 1.745" and I can get 2-3 loadings before I trim again. But I ALWAYS check to make sure.

[ellobo]

Do you weigh yur charges or take them from a dispenser? Maybe your charge is larger than you think. And put that ejector pin and spring back in the bolt. No need to remove it.

El Lobo

[earl39]

My eye sees no sign of high pressure other than the previous round had some black soot around the primer.

There should be no soot around the primer. The soot coming out around the primer is a good sign that the load is too hot.

[foxx]

Are you 100% sure you loaded Varget? I have loaded 69 SMK's to over 25 grains of Varget and never had pressure signs like you describe. I also neck sized and never had an issue. Pretty sure Federal primers are known for being soft and that may be why they look like excessive pressure but are not.

I have literally loaded thousands of rounds using 69 SMK's and Varget using the data above, 24.5 grains. I have shot them in several different bolt guns as well as a few AR15's and I have never seen signs of pressure, ever. I have used CCI400, CCI41, R7.5's, Wolf SRM and Tula SRM with that load. I never used Federal because I heard they were soft.

I am not saying to reset your headspace. I was just curious whether you had or not.

Are you trimming your cases back below 1.76? If not then what might be happening is the throat is keeping the case mouth from opening and releasing the bullet. In some extreme cases the throat actual crimps the case mouth to a point the bullet is even harder to release out of the case. Either of these conditions can cause excessive pressures from a seemingly light load. I generally trim my cases to 1.745" and I can get 2-3 loadings before I trim again. But I ALWAYS check to make sure.


I am trimming back to 1.745 b/c that's my shortest case... And, yes, I believe everythig you are saying is true because my loads were well under published maximums for Sierra 69 HPBT-Match and Varget. and, I did not have any issues the first 20 or so... in fact, they were grouping less than .213 inches at 100 yds.

Yes, I weigh every load on an RCBS balance beam scale.

If I don't find a good group again with lower charges, I am gonna try again at 23.2g and see what happens. Maybe I had one heavy charge for some unknown reason and soft primers. Also, I am eager to see what the primers look like after firing the ligter loads.

[foxx]

There should be no soot around the primer. The soot coming out around the primer is a good sign that the load is too hot.

I agree. But I cannot believe (or am having trouble accepting) that 23.2 g is too much. I know every gun is different, but there is room for some reasonable expectations , no????