Neck sizing question

[stubblejumper]

That is because all of your seating dies are roll crimp seaters. Not every die works this way. Lee dead length seating dies do not crimp and are adjusted to firmly contact the shellholder. They will not cause a bulge in the neck. Forster BR seating dies are another example. There are many others. However the OP mentioned a lot that is being needlessly addressed like shoulder bumping and over crimping. Rounds are not being crimped and brass chambers freely after sizing. Resistance occurs after bullet seating. With 1 thou neck tension and no crimp there wouldn't be much resistance from jamming the bullet. I believe Chinbullco has the real questio to be answered: are case necks too thick?

It's very easy to prove whether the seating die is contacting the shoulder or not. If he places a fired case in the shellholder and drops the press handle down all the way and then threads the seating die into the the press it should bottom out on the shellholder before he feels any resistance. If there is any gap at all between the seating die and shell holder, and he feels resistance as he threads the die into the press, then the die is touching the case shoulder.

 

[WhelanLad]

yeah fellas I was Partial FLS my cases prior to this an had no probs, being the first set of cases I used I was over sizing them and putting pressure on the cases after firing, worked that out an only necking about 6/8s of the neck an has been great.

bit spewing I will still need a FLS die after a few loadings but maybe I can get away with adjusting the die in a few firings an bumping the neck a little an get away with it..


sorry to go a bit off topic on this one, im unable to give you any help or directions as what to do next.. although im following with interest.
WL

 

[chrismc]

Get a bump gauge and measure - if you're only resizing 3/4 (or 6/8 as you say) of the way down the neck, IMHO, you are probably not bumping the shoulder enough. Measure before sizing, then adjust die to bump 1-2 thou back. That should solve the sizing issue. Then check the necks (neck wall thickness, make sure its consistent top to bottom of neck) if issue is not resolved with sizing.

 

[WhelanLad]

Get a bump gauge and measure - if you're only resizing 3/4 (or 6/8 as you say) of the way down the neck, IMHO, you are probably not bumping the shoulder enough. Measure before sizing, then adjust die to bump 1-2 thou back. That should solve the sizing issue. Then check the necks (neck wall thickness, make sure its consistent top to bottom of neck) if issue is not resolved with sizing.

haha 6/8s , 3/4 didn't sound right, LOL

nah I have no problems? the OP does.

cheers

WL

 

[Gandhi]

The reason I say it might not be the bullet seating die(no crimp) is that the bullet seating cone is stopped by the die itself and the inside wall of the die extends all the way up to an abrupt taper to facilitate the bullet. If the case is run all the way into the case, until it stops, there is still 3/32in sticking out the bottom. The shell holder provides additional play between the case neck and the top end of the seating die. Thus, the case neck stops short of the top end of the die. The only way the neck would contact the top end of the die is if the cases were un-trimmed.

 

[stubblejumper]

I am talking about a situation where the seating die makes contact with the shoulder, not the neck.

The reason I say it might not be the bullet seating die(no crimp) is that the bullet seating cone is stopped by the die itself and the inside wall of the die extends all the way up to an abrupt taper to facilitate the bullet. If the case is run all the way into the case, until it stops, there is still 3/32in sticking out the bottom. The shell holder provides additional play between the case neck and the top end of the seating die. Thus, the case neck stops short of the top end of the die. The only way the neck would contact the top end of the die is if the cases were un-trimmed.

 

[ReloaderRick]

That is because all of your seating dies are roll crimp seaters. Not every die works this way. Lee dead length seating dies do not crimp and are adjusted to firmly contact the shellholder. They will not cause a bulge in the neck. Forster BR seating dies are another example. There are many others. However the OP mentioned a lot that is being needlessly addressed like shoulder bumping and over crimping. Rounds are not being crimped and brass chambers freely after sizing. Resistance occurs after bullet seating. With 1 thou neck tension and no crimp there wouldn't be much resistance from jamming the bullet. I believe Chinbullco has the real questio to be answered: are case necks too thick?

I outside neck turn.