223 hard chambering question

[DLT]

If you have your seating die down too far it will sometimes bulge the shoulder area, and or could possibly be causing a slight crimp that may be contributing to the problem.

Back the die out at least half a turn and run the seating stem in further to make up the difference

It should cause a roll crimp, I will check it but I did set the die up some time ago and by their instructions. No problems until a few weeks ago.

 

[DLT]

Also What causes the flare to form or start forming ?

 

[SeabeeKen]

I've seen this happen when I was reforming cases into something else. They would come out of the sizing die with a flare at the case mouth. I was not running the cases over the expander ball. Its as though the mouth went above the sizing part of the die and the excess brass went forward and made a flare. I dunno.

 

[DLT]

I have seen this before. Measure loaded outside neck dimensions of different case brands. I have a .223 rifle that does not chamber Lapua brass well but will chamber Winchester with no problem. Not all .223 reamers are the same.

I hope that’s not what I have going on. The rifle is hammering with the brass I have and I have enough to last through this barrel

 

[DLT]

Take a sized case that is less than 1.760 in length and chambers correctly, NO primer/powder. Start with the bullet seated out long, seat deeper until dummy cartridge chambers. Otherwise if fitment issue is a tight tolerance, a proud primer can tighten up the bolt closure.

I measured my trim lengths and scoped them while chambered. They are all over the free bore step. I expanded the neck, when I did the bell/flare is gone. I trimmed 1 piece to 1.755 primed, charged and seated my bullet. It chambered fine. Going to do 3 more. Will keep posed.

Of the 3 I loaded, 2 went easy, 1 was snug. I colored bullet and case with sharpie and chambered a couple different times. Didn’t see a scuff any where. I cleaned all the sharpie off got mad walked outside and fired that round. Opened the bolt pulled brass out and it rechambers easy. That goes back to bullet hitting the freebore or lands. Will check that again. I’m shooting 77 smk they are consistent and I have been getting consistent seating cbto. It’s going to drive me damn crazy.

I pushed the bullet on in .025 deeper. Didn’t change a thing. The only swipe I can see is on the case head from trying to close. My bullets to measure .224 I have checked that so it’s got to be neck thickness. Which doesn’t make sense because my fired lapua is .256 if it was a neck thickness problem I wouldn’t think they would expand at all upon firing.

 

[fkimble@charter.net]

Is the rifle a REM 700 by chance? If so, check the extractor. Last two I bought the extractor had a hard time slipping over the rim. It was to the point of having to hammer the bolt with the heel of my hand. A look at rim will also show serious scraping.

Frank

 

[L.Sherm]

Strip the bolt and start over. Size 3 cases then try to chamber just the 3 cases if everything is good then seat the bullet in all 3 then try that

 

[K22]

Is the rifle a REM 700 by chance? If so, check the extractor. Last two I bought the extractor had a hard time slipping over the rim. It was to the point of having to hammer the bolt with the heel of my hand. A look at rim will also show serious scraping.

Frank

I don't think this is his problem because other case brands chamber without issue.

However, I have witnessed this extractor problem on newer Remington's several times at the range. It one case, it was so bad that the owner could not chamber a factory round. How that rifle got out of the factory is beyond my imagination!

 

[DLT]

Is the rifle a REM 700 by chance? If so, check the extractor. Last two I bought the extractor had a hard time slipping over the rim. It was to the point of having to hammer the bolt with the heel of my hand. A look at rim will also show serious scraping.

Frank

This is a salvage title

 

[DLT]

Strip the bolt and start over. Size 3 cases then try to chamber just the 3 cases if everything is good then seat the bullet in all 3 then try that

All cases and brands chamber easily both sized and fired. It’s only lapua with a seated bullet that’s giving me a fit.

 

[Frankm]

As someone mentioned check the web diameter…. I had a 22-250 AI that gave me fits with Lapua brass and I gave 200 cases that d been fired a couple times to a friend and the cases ran fine in his gun; which by the way was chambered by the same gunsmith with the same reamer !! Go figure.

So I bought some lowly WW brass and it works great in my gun ….

 

[deadeyemike]

Have you checked to see if you have a donut forming at the bottom of the neck? If your bullets are seated deep enough to hit it the neck diameter could be too large with a seated bullet.

 

[L.Sherm]

All cases and brands chamber easily both sized and fired. It’s only lapua with a seated bullet that’s giving me a fit.

Then it has to be a bullet or seating issue

 

[L.Sherm]

What does a 3 time fired Lapua case measure at the .200 vrs a sized one?

 

[DLT]

Have you checked to see if you have a donut forming at the bottom of the neck? If your bullets are seated deep enough to hit it the neck diameter could be too large with a seated bullet.

No but I will, I thought about that while testing the other items on the list. Thanks for the reminder

 

[DLT]

What does a 3 time fired Lapua case measure at the .200 vrs a sized one?

They have all been fired several several times. I’ll have to get the measurement tomorrow. I sharpie colored the whole case body and not a scuff mark anywhere when chambered. I did that after I colored the ogive and neck with no marks. I can push the case in all but all the way with my finger such as the neck length I’m satisfied it’s all but the final few thousandths that the bolt has to rotate what ever it isn’t much. It feels like a real hard bullet jam probably even harder than that

 

[L.Sherm]

What action is this

 

[DLT]

As someone mentioned check the web diameter…. I had a 22-250 AI that gave me fits with Lapua brass and I gave 200 cases that d been fired a couple times to a friend and the cases ran fine in his gun; which by the way was chambered by the same gunsmith with the same reamer !! Go figure.

So I bought some lowly WW brass and it works great in my gun ….

I’ll have to get those tomorrow. I believe in earlier post my .200 line was either .374 or .375 . I have a hornady die that I tried on one piece that die squeezes the piss out of brass so I sized one and checked my bump it was still difficult to close bolt with a bullet seated

 

[DLT]

What action is this

Salvage title. Savage model 12.

This brass has been shot im sure 10+ times. I have some more that’s only seen one firing I bought used but same batch as this. I could grab some of them and see what happens I guess

 

[L.Sherm]

Are you measuring a fired case with comparator then bumping .002 according to comparator measement or what is the difference fired vrs sized.
What I'm getting at is if your just going off of comparator measurements you may not be bumping back enough to get no resistance. Eric Cortina has a good example on his podcast doing the Wheeler method were he had to bump .004 to get no resistance. If you haven't bump 1 case .006 and see what happens.