Tight Bolt & Line On Casing

[csmcclain]

Bought some snap caps for a new gun (no ammo yet), and when I tested them, the first (right) chambered perfectly. The second and third (left and middle) would get stuck and were left with a little dent across the case and bullet. What is going on? Is this the seating depth issue or do you think it’s a chamber problem?

 

[farmer_john]

Bought some snap caps for a new gun (no ammo yet), and when I tested them, the first (right) chambered perfectly. The second and third (left and middle) would get stuck and were left with a little dent across the case and bullet. What is going on? Is this the seating depth issue or do you think it’s a chamber problem?View attachment 800665

Those snap caps or just bullets with no powder?.

What i do for reloading to get my start to seat. I take my rem bolt apart and put a round in thats very over sized on length and slowly back it down until the bolt closes on it with 0 effort. And your right at the lands

 

[csmcclain]

Those snap caps or just bullets with no powder?.

What i do for reloading to get my start to seat. I take my rem bolt apart and put a round in thats very over sized on length and slowly back it down until the bolt closes on it with 0 effort. And your right at the lands

Technically, I guess bullets with no powder, but the primer is rubber so I’m going to call and snap caps for the sake of this

 

[farmer_john]

Whats that goop on the bullets. My first guess would be thats potentially an issue. But those long lines got me beat have you looked in your chamber for anything that might be in there?

 

[csmcclain]

Whats that goop on the bullets. My first guess would be thats potentially an issue. But those long lines got me beat have you looked in your chamber for anything that might be in there?

Nail polish to mark the dummies. Didn’t even think that might be an issue. Guess I’m going out to dig out my wife’s nail polish remover and see

 

[farmer_john]

Nail polish to mark the dummies. Didn’t even think that might be an issue. Guess I’m going out to dig out my wife’s nail polish remover and see

Use a sharpie if your going to mark dummies or theres a brass die that will black the case but wont add thickness

 

[Grumpy gumpy]

That scratch and dent looks to be caused by a burr or sharp edge. Mark a case with sharpie or similar around the neck and projectile and mark the top of the case, for orientation and chamber a round, when ejected it should show the spot to check
Gumpy

 

[Rare Breed]

Technically, I guess bullets with no powder, but the primer is rubber so I’m going to call and snap caps for the sake of this

Snap caps worked great in my DRs and Rigby told me unless I was doing thousands of dry fires on my bolt actions don’t worry. I decided to make my own anyway by taking a spent case putting a bullet in it then pouring silicon in the priming hole. Works great!

 

[csmcclain]

That scratch and dent looks to be caused by a burr or sharp edge. Mark a case with sharpie or similar around the neck and projectile and mark the top of the case, for orientation and chamber a round, when ejected it should show the spot to check
Gumpy

I will definitely do that. I also have a borescope coming in as we speak.

 

[EjectorSwipe]

Are you sure the lines weren’t already there? Easy to buckle the small shoulders when seating the bullet if the neck tension is too high. I’d measure the shoulder diameter vs a factory or resized brass round. Before I figured out my 6x47 rem it would do this crap all the time.

Also possible they made the snap caps with junk brass.

 

[csmcclain]

Are you sure the lines weren’t already there? Easy to buckle the small shoulders when seating the bullet if the neck tension is too high. I’d measure the shoulder diameter vs a factory or resized brass round. Before I figured out my 6x47 rem it would do this crap all the time.

Also possible they made the snap caps with junk brass.

No. On those two rounds specifically they are actually getting stuck in the chamber and the bolt cannot close. On the other one, it’s fine. I have also run a test to find exactly where in the chamber they are getting caught (shoutout to @Grumpy gumpy for giving me a quick and basic idea).

 

[Ontario Hunter]

I'm pretty sure you've got a burr in the chamber. Remove the bolt. Then get a 3-piece cleaning rod and a bore brush that's for somewhat smaller cartridge. Screw brush onto just the last length of rod. Wrap some medium coarse steel wool onto the bristles of the brush. Then put the other end of the cleaning rod into portable drill and tighten. Insert brush into chamber and start drill. You may need two lengths of rod to clear the stock's comb depending on stock design. Clean thoroughly afterwards.

 

[Gomer]

Are their scope bases mounted on the receiver? Do you have a base screw that’s protruding a little bit?

 

[NIGHTHAWK]

If the receiver is drilled through into the chamber and you use lock tight. Even the lock tight can get pushed through, harden, and cause that problem. Don’t add any kind of lubricant that can fill voids and cause pressure and that can cause issues. Seen that on sizing does too… Maybe worth a trip to a gun smith to quickly sort it out.

 

[csmcclain]

Are their scope bases mounted on the receiver? Do you have a base screw that’s protruding a little bit?

If the receiver is drilled through into the chamber and you use lock tight. Even the lock tight can get pushed through, harden, and cause that problem. Don’t add any kind of lubricant that can fill voids and cause pressure and that can cause issues. Seen that on sizing does too… Maybe worth a trip to a gun smith to quickly sort it out.

Receiver is drilled, not the issue. Scratch is on the bottom of the casings.

 

[csmcclain]

I'm pretty sure you've got a burr in the chamber. Remove the bolt. Then get a 3-piece cleaning rod and a bore brush that's for somewhat smaller cartridge. Screw brush onto just the last length of rod. Wrap some medium coarse steel wool onto the bristles of the brush. Then put the other end of the cleaning rod into portable drill and tighten. Insert brush into chamber and start drill. You may need two lengths of rod to clear the stock's comb depending on stock design. Clean thoroughly afterwards.

Good idea. Will try. I’m thinking but as well.

 

[Sabre]

As others have said about the sharpie on the casing, is what I would do.

I would also put a small borescope type camera into the chamber and look for something sticking out. There are so many inexpensive options for those nowadays that it's worth it to have around. And in your case, it likely could lead to a definitive answer of what's going on.

 

[uplander01]

The sharp mark on the cases is definitely a sharp edge of the front corner of your mag box or feed ramp, the dent could mean that the tip of the bullet is hitting the chamber mouth or just inside the chamber and the case head isn’t coming up out of the mag in time so it’s binding (timing issue). I had a 500 jeffery that did this only with 600 grain bullets ( they were longer than 535’s)

 

[csmcclain]

The sharp mark on the cases is definitely a sharp edge of the front corner of your mag box or feed ramp, the dent could mean that the tip of the bullet is hitting the chamber mouth or just inside the chamber and the case head isn’t coming up out of the mag in time so it’s binding (timing issue). I had a 500 jeffery that did this only with 600 grain bullets ( they were longer than 535’s)

When my borescope comes in, I’m going to watch the feeding in slo-mo from the barrel. I still think it’s just very strange that one of them feeds absolutely perfectly every time (minus a faint scratch), but I cannot even close the bolt on the other two.

 

[csmcclain]

Fixed! Shoutout to @Ontario Hunter for the idea.