Hornady LNL progressive press ?

[rebs]

what does this piece do ?
I know it goes on the powder measure but I don't know what it is for.

when I am reloading 223. once in a while the powder measure deforms the case mouth by making it smaller. Anyone know what causes this ?

 

[gravelyctry]

That piece limits the travel of your powder measure. If you have a powder through expander in your powder dispenser, it Will force the expander into the brass mouth rather than allow the die to continue raising.

 

[rebs]

That piece limits the travel of your powder measure. If you have a powder through expander in your powder dispenser, it Will force the expander into the brass mouth rather than allow the die to continue raising.

How do you adjust it ? I do not have a powder through expander. It is the 223 powder bushing that came with the press

 

[praveen]

Actually that piece is made specifically for powder through expander that will flare the case mouth during powder dispense. The adjustment screws are to control how much case mouth expansion you want.
It is not required to control the powder dispenser travel. Powder measure travel is simply adjusted by lowering/raising the powder measure itself.
I actually find the powder through expander useful for handgun reloading because seating flat base bullets becomes easier on a flared case mouth.

 

[praveen]

Check this video out on how to setup the powder measure -

And this one on how to setup and use the powder through expander -

 

[Bill K]

In the majority of the time in seating a bullet into the case, you need to put a slight flare on the case mouth or you will ruin a lot of pistol/revolver cases when you try to seat the flat base bullets.

Actually that piece is made specifically for powder through expander that will flare the case mouth during powder dispense. The adjustment screws are to control how much case mouth expansion you want.
It is not required to control the powder dispenser travel. Powder measure travel is simply adjusted by lowering/raising the powder measure itself.
I actually find the powder through expander useful for handgun reloading because seating flat base bullets becomes easier on a flared case mouth.

 

[nksmfamjp]

That piece is supposed to make something better. I found it not to fit or work as well as my old method….

 

[drop_point]

That piece is indeed for mouth expansion. You really only need to use it if you're planning to run a Powder Cop or similar powder check.

 

[nksmfamjp]

That piece is indeed for mouth expansion. You really only need to use it if you're planning to run a Powder Cop or similar powder check.

How does it relate to the powder cop? I don’t use that, but do run the cop.

 

[drop_point]

How does it relate to the powder cop? I don’t use that, but do run the cop.

If you’re using a station for a FL die, an expander, the powder thrower, the seater, then a crimp die, you won’t have room for a powder cop on the five station press. You either have to combine seating and crimping, or this device and the expand-through die on the powder thrower.

 

[rebs]

what is causing my LNL progressive press powder measure to occasionally do this to the 223 Lapua brass. The mouth of the case looks like it is heavily crimped

 

[divingin]

what is causing my LNL progressive press powder measure to occasionally do this to the 223 Lapua brass.

Can't see anything in your image.

Heavily crimped case mouths are generally a sign of a die being adjusted way too far down (generally the seating die, but it can happen with others.) Easiest way to ID is to run a single piece of brass through all the processes (don't do anything but run the brass through the dies - no primer, no powder, no bullet) and see where the crimping is occurring.

 

[rebs]

Can't see anything in your image.

Heavily crimped case mouths are generally a sign of a die being adjusted way too far down (generally the seating die, but it can happen with others.) Easiest way to ID is to run a single piece of brass through all the processes (don't do anything but run the brass through the dies - no primer, no powder, no bullet) and see where the crimping is occurring.

scroll down to see the case. This is happening with the powder measure using varget powder

 

[divingin]

I can see the case. The photo is focused on the writing on the paper; the case mouth is a blur.

 

[nksmfamjp]

what is causing my LNL progressive press powder measure to occasionally do this to the 223 Lapua brass. The mouth of the case looks like it is heavily crimped
View attachment 1484613

The powder measure height should be set where the powder rotor stops about 1/8th inch from the body. That way it doesn’t crush the case.