Bullet stuck in seater die

[rcerro]

I'm loading a compressed load of H4831sc in 260 Rem seating 120 gr Barnes ttsx 2.819''. Every time I seat a bullet it pulls out of the case neck and is stuck in the seater cup. The seating die I am using is a standard rcbs unit. I tried polishing the inside of the cup with steel wool and cleaned up the edge with a dremel. I have also tried applying a very thin layer of patroleum jelly to the tops of the bullets. None of this has worked. Do I need a different type of seating die? Any help is appreciated. Thanks

 

[CJ6]

Seating on a COMPRESSED load is probably where your troubles lie. Trying to compress the powder with the bullet is forceing the bullet into the seating stem (the bullet nose obturates to the stem).

 

[rcerro]

I thought using a compressed load is a fairly common practice. I'm using 50 gr of h4831sc which is max load according to hodgdon. What does everybody else do when this happens?

 

[CJ6]

You are trying to compress TOO much (powder only compress just so much). Try useing a long drop tube 6-8" slowly pouring the powder in to help settle, or vibrate the filled case (held on base and mouth with fingers).

 

[NorCalMikie]

Put your finger over the case neck and tap on it with something just hard enough to rattle the powder down. See if that makes a difference.

 

[bozo699]

rcerro,
What kind of neck tension are you running? New or fired cases if fired how many firings? how full is the case, clear to the top of the neck?
Wayne.

 

[rcerro]

New remington brass, not sure what the neck tension is. The powder comes all the way to the base of the neck after tapping case with a screwdriver. Thanks for the replies.

 

[RonAKA]

How far is the bullet going back into the case? Because copper bullets are less dense than lead bullets, they are going to be significantly longer. You may be better off with a conventional lead core bullet that is shorter. Also flat base bullets tend to be shorter than boat tails.

 

[CJ6]

A question? Are you useing a die setup for a taper crimp ? If so you may be crimping too soon/much.

 

[rcerro]

No, I think the die will make a roll crimp but I have it set up to seat without a crimp.

 

[rcerro]

the bullet protrudes past the base of the neck into the case .3''.

 

[CJ6]

.3 That's a lot of compression. Here's an example, neck length on a 260 Rem is .2595 +- you're trying to compress a powder charge .0405 higher than the neck of your cartridge to the base of the neck. Or in fact from the base of your neck .3 into the case. I'm sure those kernels are just crunching to pieces.

 

[rocketron]

i'm not sure what the rcbs seater stem looks like........

i know the redding stems (comp seater)can crack when doing compressed loads.....

if yours is cracked this may be some of the sticking problem

Ron

 

[rcerro]

the powder sits level with the bottom of the neck not the top. :-\

 

[jimbires]

I'd contact RCBS and ask if they make a seater stem that will work with the TTSX bullets . I ran into this problem with a set of Hornady dies , Hornady makes a few different seating stems for their dies . here is a link to the Hornady ones . Jim


http://www.hornady.com/store/Miscellaneous-Die-Accessories/?page=2

 

[RonAKA]

I take it the reason you are seating the bullet so deep in the case is to make it fit the magazine?

Just to test the theory that there is too much compression, have you tried to seat it just to the bottom of the neck? If that works, then it seems you need to seat it out longer, or if that is not possible, then go to a shorter bullet.

 

[CJ6]

rccero, please reread my above post #11.

 

[jonbearman]

Just out of curiosity ,did you resize the new case's? Check your expander bal l to make sure it is the size it is supposed to be as well.I have used compressed loads for many cartidge's and had no problem.The drop tube is a must.

 

[rcerro]

seating depth is .030 off the lands. I think barnes recommends .050. I will call rcbs about the seater stem. Maby I will have to use a different powder or bullet. The bullets seat with normal pressure but the seater cup just pulls them out again. I've inspected the powder in these cases and cant find any crushed or broken up kernals. I did not fl size cases just deburred flash holes & chamfer necks.

 

[bozo699]

rcerro,
Try doing as somebody already sugested and only seat them 2/3 the length of your neck, that way they shouldn't even be touching your powder and see if the seater stem is still pulling the bullet out, if it is you have neck tension or seater stem problems. I have never hear of not sizing new brass either @ least run them through a sizing mandrel.
Wayne.