Resizing prior to using a Giraud trimmer.

[Mr_Happyface]

Alright, so I've been using a Forester neck sizing / shoulder bump die for quite a while now. .

Recently I bought a concentricity gauge and a Giraud trimmer.

I was pretty happy with the die because I've been shooting some pretty damn tight groups, but didn't like the fact that the first load on new bras was basically a throw away, because the case needed to in essence be fire-formed before it matched all the others; the POI was always off.

I threw some freshly cases on the concentricity die and noticed that there was a decent amount of run-out on the neck, so that was kind of strike one. After that I trimmed the cases on the Giraud and found the trimmed lengths were up to .005 off in length, and sticking in the Giraud's holder like crazy. After some testing I realized the cases are indexing in the trimmer on the sides of the case rather than the shoulder, so that's strike two (fuck strike three) and I ordered a full-length sizer.

Will this alleviate my problem?

I've never used a full length sizer before, anything I need to know? (specifically in regards to the first firing on brass)

 

[mdmp5]

Yes you need to size the cases before trimming in the Giraud. Your problem will be solved when you get the die

 

[Mr_Happyface]

Been sizing prior to, but with a neck sizing die, I think that's why my cases are getting stuck in the giraud.

 

[turbo54]

Been sizing prior to, but with a neck sizing die, I think that's why my cases are getting stuck in the giraud.

Yes.

You could also open us the Giraud shell holder a few .001"s with fine sandpaper.