Coal gets longer and longer

You stated the COAL is well below magazine COAL. Factory round did same. That points to throat for me.
1-scope the throat to see if there is anything there to interfere with bullet. Anything from lint, brass, carbon etc can cause this.
2-have you actually measured the max CBTO and max COAL with a comparator instead of using magazine as COAL reference?
3-Sharpie the heck out of bullet ogive and see if there are any rub marks.

Good luck!
 
Do the rounds in the magazine get shorter when you shoot any of them? At any rate you can cure the problem for sure with a Lee factory Crimp die, and it only takes a little. Please read the thread from Butterball. Can't believe he's not all over this one yet.
 
You stated the COAL is well below magazine COAL. Factory round did same. That points to throat for me.
1-scope the throat to see if there is anything there to interfere with bullet. Anything from lint, brass, carbon etc can cause this.
2-have you actually measured the max CBTO and max COAL with a comparator instead of using magazine as COAL reference?
3-Sharpie the heck out of bullet ogive and see if there are any rub marks.

Good luck!
I was wondering about the same thing. However, I still find it hard to believe all 3 rifles have the same issue.
 
I was wondering about the same thing. However, I still find it hard to believe all 3 rifles have the same issue.
Measured with 2 different hornady bto gauges and also tried it with measuring the overal length. I have fairly expensive calibers as well
 
My guess is the loads are jamming on something. Either the lands or really bad build up in the throat.
I have a rifle that will do this. It has a completely torched throat. Its a 22-6mm. If the barrel is very dirty it will pull the bullet on a loaded round and leave it in the throat. Gotta get a new barrel, but I suspect the throats in the barrel. Carbon? Gunk? Shot out like mine? Mine will completely pull the bullet with proper neck tension and a dirty throat if the bullet is not crimped. Maybe find someone with a borescope and zero in on the throat.
 
Means they're accurate. Not crappy so I trust them.
I have factory rifles in the $300-$400 shooting factory ammo to full custom in the $5000-$7000 range that are accurate. I trust all my rifles; otherwise, I get rid of them or re-build them to shoot for my intended purpose. Anyways, back to the issue at hand ...
 

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