Slight binding when closing action.

To check that, could pull the bullets on the ones that won't chamber and see if the empty case still binds.

If the marker is rubbing off in the throat of the chamber could the bullet not be seated square, due to the 110 being very short?

These 110s are short but being flat based they still seat in the case about .245 inches.
 
It still looks like the shoulder angle is out, or too far forward to me. A thou or two can make all the difference in the world, and I believe I see quite a difference in the shoulders of those two cases. If you were near me I would lend you a Forster datum dial kit.


Have you measured the diameter of the 110's with a micrometer?

The factory round is .3065 and the 110s are .3075 inches.
 
I think you bumped the shoulders... there is a slight donut there... did you notice that there was a slight give at the bottom of the press stroke? Try backing off the die a full turn and turning down the seater a full turn.
 
I like to check my cases in my chamber after I've resized but before priming, charging, seating. Usually I'll take a few of the freshly resized from a batch and make sure they fit in the chamber of the rifle I'm loading for before I proceed to the rest of case prep.
 
I like to check my cases in my chamber after I've resized but before priming, charging, seating. Usually I'll take a few of the freshly resized from a batch and make sure they fit in the chamber of the rifle I'm loading for before I proceed to the rest of case prep.

No binding on the cases at all, only the projectile. Got to thinking and decided to cycle a few factory rounds and see if anything there. As you can see in the picture the factory round has the same markings. Being that the factory round measured .3065 and the 110s are .3075, bordering on .308 inches at the ogive, would that thousands, thousand and a half of an inch make much of a difference in felt binding?

 
If that is the issue, then yes, the metal of the bullet jacket is strong enough to be felt if there is more than a thou press fit.

It's starting to sound like there might be a slight issue in the rifles chamber.
 
I don't think the marks on the bullet have anything to do with the interference issue. Have you noticed the difference in the shoulders between the sized case and the factory case? Think, Grasshopper...
 
Well, This is exhausting but I put my money on "Bullet Run out" Based on what I see and hear.
If you can measure or spin a few rounds you might be able to see the runout,
that would be where the rub mrks are coming from and some from the feed rails etc.
A good friend could spin these on one of the concentricity guges out there.
BB
 
I don't think the marks on the bullet have anything to do with the interference issue. Have you noticed the difference in the shoulders between the sized case and the factory case? Think, Grasshopper...

It appears the shoulder on the factory round is at a sharper angle or at least more defined. Could this be an issue that the once fired brass is not fire formed to my rifle but some other rifle?
 
The marks shown on the bullet do not look like the lands are hitting the bullet they look like feed ramp scuff marks coming into the chamber (the marks left by seating too close to the lands are distinct individual scares left around the circumference of the bullet). If you are getting a stiff feeling when closing the bolt I would look to your Full length sizing die and focus on that. The other thing that may want to check out is your trim length. I used to have all kinds of issues with my 30-378 in the Sako chamber and what I ended up doing was trimming my my cases an extra couple thou and that fixed the problems. Every rifle has a unique chamber dimension and a thou here and a thou of an inch there is sometimes the issue. Good Luck.
 
All chambers and sizing dies have the same shoulder angle. Did you try the trial I suggested in my first post? Think, Grasshopper...

Must have missed your first post so went back and read it. I seated them a little deeper. OAL is now 3.155 from 3.17. Has made a difference so I'll play with that for now, thanks to all that chimed in with advice. Much appreciated.

Thanks Ernie
 
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