Blew a primer and stuck a case

[Fjold]

Shooting an F class match this morning with my 6.5x284 and after my 38th round I opened the bolt (without feeling anything abnormal, felt around for the empty case and couldn't find it but thought that it had just rolled off my shooting mat.

I looked through the scope and saw that I had shot a 10 at 1:00, wrote down my score and dropped another round in the action. I felt the round stop as I tried to close the bolt so I stopped and looked and saw this:



I closed the bolt, snapping the extractor over the rim but I couldn't pull it out. I beat the bolt open with the heel of my hand but the case stayed in the chamber (The case looked flattened on the left side due to the extractor snapping over the case). I tried banging the case out with a cleaning rod while I was at the range and later at home but it will not budge.

I'm going to hit the case with canned air and try to chill it enough to shrink it down and try the cleaning rod again. If that doesn't work then I'll soak it with Kroil and get a length of .25" drill rod next.


The shot that did this felt absolutely normal and there was no gas blow back from the blown primer.
The bullet hit in the 10", 10 ring on the 1,000 yard target
All the cases from previously fired rounds look absolutely fine, with no indications of over pressure.
The load is 47 grains of H4350 and a 142 grain SMK seated .007" off the lands. (2,860 fps)
All powder charges are individually weighed and dropped.

[bsumoba]

Sucks Frank. Hopefully it comes out.

How many rounds do you think you have on the cases and are you full length sizing or neck sizing?

[pacrat]

Well that SUX.

I hope you get it removed without damaging your rifle.

[Fjold]

Sucks Frank. Hopefully it comes out.

How many rounds do you think you have on the cases and are you full length sizing or neck sizing?

The cases had one reload on them. Brand new Lapua cases, fired once to fireform them and reloaded on a Lyman FL Type S bushing die without the shoulder bumped back at all.

Just ran canned air (upside down) through the case until it had frost on it and still couldn't get the case out with a cleaning rod and jag.

[pacrat]

A suggestion if I may.

Canned air, isn't usually air. Products like "Dust Off" are liquid O2, CO2 or Nitrogen, in the can. If you are squirting it into the flash hole. It is mostly several inches up into the bore before it changes state for max chilling effect.

Place a small patch in muzzle or even a small piece of paper towel. Just as a bore seal at case mouth. Shove it in using cleaning rod just to the leade of chamber. And leave rod in place ready to go. Warm the rifles chamber area with a hair dryer to expand it. Then blast the upside down can into the flash hole using the tube that comes with it. That will hold the liquid inside the case for maximum chilling/heat absorption as it changes state. Then smack the rod several times.

Hopefully the warm chamber and quickly chilled case will pop it loose.

just a thought.

[Fjold]

Thanks,

I plugged the mouth of the case with a patch on the end of the cleaning rod and put the extension tube on the canned air can in the flash hole of the case.

I've got a can of Kroil and I'm going down at lunchtime to get some 1/4" brass and steel drill rod for the next step.

[BPS]

Good luck Frank, hopefully everything, comes out alright.

Lee

[Fjold]

I got it out.

I put the brass rod in and had to jiggle it to get it in the case mouth. I used a couple Teflon washers to protect the crown and put a 2x4 on the garage floor under the rear bridge.

Just tapping it with the hammer did nothing, it took a fairly hard whack to unseat the case.

The case looked it grabbed about 3/8" of an inch above the web. I looked at it and then set it down to put the tools away and now I can't find the damn thing.

I looked in the chamber using a high intensity light and couldn't see anything out of the ordinary, no scratches, etc.

[JagerDog]

So was the primer hole noticeable enlarged?

[Fjold]

So was the primer hole noticeable enlarged?

As soon as I can find it, I'll check. I think that forcing the extractor over the case head twice distorted it.

[pacrat]

The case looked it grabbed about 3/8" of an inch above the web. I looked at it and then set it down to put the tools away and now I can't find the damn thing.

That's what I call a brainfart when I do it.

Look in the tool box where you put the tools away.

Glad you got it cleared.

[fguffey]

I would have used a slide hammer, some refer to the slide hammer as being a dent puller.

F. Guffey

[Fjold]

I'm taking the borescope home from work tonight to get a good look in the chamber.

[Whiterabbit]

What I find interesting is your 6.5x284 load is identical to my 7x57 load with 140 grain bullets. And noone would really consider that a 1000 yard rifle yet the 6.5...

oh, and glad it came out easy enough. we all knew the moment you put a brass rod in there it'd pop right out

I've learned (hint for everyone here) that muzzleloaders can buy conical brass crown protectors for loading, a couple are great to have around the gun stuff for purposes just like this (or heck, even cleaning)

[Fjold]

Hodgdon says that with H4350 you can go to 46.5 grains with a 140 grain bullet which will get you 2,682 fps at 46,000 CUP. So, 47 grains should be more than possible.

The difference is that the 142 grain .264" bullet has a much higher Ballistic coefficient so it carries past 1,000 yards a lot better.

A .284" diameter bullet to match these ballistics would have to be between 175 and 180 grains and the 7x57 will only make about 2,300 fps with the bigger bullets. You need a magnum sized case to make enough velocity to make it a competitive 1,000 yard cartridge.