Misread my caliper bumped shoulder 20 thousandths instead of 2... help

[Ezdoesit]

I am pretty new to reloading and very new to precision dies. When I was setting my die I set the shoulder back by hundredths instead of thousandths. I trimmed and primed but when powdering I saw my original notes and the measurements didn’t match. I pulled an unfired case measured then measure one of my sized cases. Sure enough I’m a moron.

Question is now what? Chunk the brass and start over?

 

[918v]

what gun??

 

[Geno C.]

Could possibly save them with seating hard into the lands, if your not running high pressure loads

 

[just browsing]

What cartridge?

You are basically going to need to fireform your brass - it’s a common thing with “improved” chamberings like AIs, Dashers, etc.

Probably still OK, but as stated above you’ll either need to load them long into the lands or utilize another FF method (COW or false shoulder).

Bottom line is, brass can still be salvaged with a little work. Then again if it’s Hornady or something cheap/easily replaced... probably not worth the hassle.

 

[Ezdoesit]

It’s only 100 pieces of brass but after tumbling sizing trimming and priming I feel pot committed

 

[Ezdoesit]

Thank you for the replies. It is 6 creed hornady brass and if I need to fireform it and jam the lands I would rather pitch it and save the barrel another 100 rds.


I appreciate you helping me out

 

[918v]

I have been reloading for 25 years and have used dies by nearly every manufacturer and have yet to run into one that will bump a shoulder .020”

 

[BurnOut]

I have been reloading for 25 years and have used dies by nearly every manufacturer and have yet to run into one that will bump a shoulder .020”

When I did something similar ('cept I think mine were .040 short) it was a bit of... uhhhh... well, let's just say "stupidity," in regard to a Lee FCD that was the culprit. YMMV.

 

[Bradu]

I have been reloading for 25 years and have used dies by nearly every manufacturer and have yet to run into one that will bump a shoulder .020”

I have one that would easily do what he's describing. It has a pretty good gap between the shell holder and the die with a .002" bump.

 

[918v]

What die is that?

 

[Ezdoesit]

1.525 unsized
1.502 sized

Now to clarify I am looking to bump the shoulder to 1.523?

 

[black5.3]

You only want about .002” of bump so if your fired dimension is 1.525” then ideally when you size it the shoulder will be 1.523”.. when i go through this process i check at least 5-6 fired cases and get a average measurement and then set the die up for about .0015” setback. That leaves me a little wiggle room for lube variance and what not. If for some reason i dont bump the shoulder as much as i want because of running the press differently or whatever then the brass will still be bumped .0005” or close to it... the worst you will notice is a little tightness in the bolt when closing it in most cases... the important thing is to lube the brass the same way every time and run the press the same way every time. Consistency is the key to both LR shooting and reloading.

 

[Bradu]

What die is that?

Forster 338 lapua

 

[Milo 2.5]

Thank you for the replies. It is 6 creed hornady brass and if I need to fireform it and jam the lands I would rather pitch it and save the barrel another 100 rds.


I appreciate you helping me out

Wise choice, learn and move on.

 

[918v]

Forster 338 lapua

Did u send it back? Or is your chamber out of spec?

 

[Bradu]

Did u send it back? Or is your chamber out of spec?

Just left it alone, it bumps the shoulder consistently. Chamber is good, when comparing new to fired brass, very little difference.

 

[Milo 2.5]

Just left it alone, it bumps the shoulder consistently. Chamber is good, when comparing new to fired brass, very little difference.

With that gap, one would think after time, your case base is going to expand and cause issues either feeding or extraction.

 

[Geno C.]

I doubt he’ll have problems with a die like that. I have a couple that are similar. Everything above the web is still supported by the die.

Guys, including myself, have sized brx with br does for years. That’s .100” difference.

 

[Bradu]

I doubt he’ll have problems with a die like that. I have a couple that are similar. Everything above the web is still supported by the die.

Guys, including myself, have sized brx with br does for years. That’s .100” difference.

It sizes to the web so that shouldn't be an issue.