Forster Bench rest and eldm issues

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Anyone ever had an issue like this with a Forster Bench rest seating die and Hornady ELDm?

This is my first time using a Forster die, not sure if I set it up wrong but I set it up per the instructions.
 

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I've gotten some very slight dumpling on harder to seat bullets. Nothing like that. Looks like excessive seating force. I have to ask, what is the perceived gain from the excessive deburring? If you're making a sharp point at the case mouth it can be catching on the bullet and creating more seating force than necessary.
 
I've gotten some very slight dumpling on harder to seat bullets. Nothing like that. Looks like excessive seating force. I have to ask, what is the perceived gain from the excessive deburring? If you're making a sharp point at the case mouth it can be catching on the bullet and creating more seating force than necessary.
It’s virgin brass. I have done nothing to it except run a sizing button through the case mouth and just given it a very light inside the case mouth chamfer to make sure there’s no sharp edges.
 
this is the primary downside of Forster seating dies, the stems suck for long nosed bullets. Most of that will go away after one firing when there is carbon in the case necks and seating force is significantly reduced.

The options to improve the seating stem:
1- do as was recommended above, chuck an eld in a drill and polish the stem with the bullet and a lapping compound
2- Forster will machine them to fit any bullet you send them for a nominal fee. I’ve never done this because I hate shipping stuff in but it’s a service they offer.

If you tumble the virgin brass in used dry tumbling media it should reduce seating force quite a bit too.
 
this is the primary downside of Forster seating dies, the stems suck for long nosed bullets. Most of that will go away after one firing when there is carbon in the case necks and seating force is significantly reduced.

The options to improve the seating stem:
1- do as was recommended above, chuck an eld in a drill and polish the stem with the bullet and a lapping compound
2- Forster will machine them to fit any bullet you send them for a nominal fee. I’ve never done this because I hate shipping stuff in but it’s a service they offer.

If you tumble the virgin brass in used dry tumbling media it should reduce seating force quite a bit too.
After some digging I did find the custom machined seater option on their website. Not sure why they don’t offer a second stem given how common long pointy projectiles are now days.

I already packaged the dies up and sent them on their way. I’ll try Redding with both of their seater options.
 
After some digging I did find the custom machined seater option on their website. Not sure why they don’t offer a second stem given how common long pointy projectiles are now days.

I agree, seems like an easy offering to add.

I do think that the stem is only half of the equation though and likely would have been resolved once there’s some carbon in the necks.
 
I haven’t had issues like that with eldm and forester seaters in 284win and 6cm. What cartridge were you loading?
7 PRC and 180 ELDm
I agree, seems like an easy offering to add.

I do think that the stem is only half of the equation though and likely would have been resolved once there’s some carbon in the necks.
Yeah I’ll dry lube the necks and I’ll shoot this first loading on paper and at the range. Barrel is new so I’m hoping it settles in and speeds up some in the process.
 
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