Reloading fgmm brass on 550b. Brass is cleaned chamfered and deburred. Fl sizing using rcbs die. Seating with forster mirco seater. Case checks fine before seating after seating doesnt fit. Scratching my head on this one.
Case gauge issues reloading 300wm
- Thread starter sixstrings101
- Start date
A little more detail about just in what way it "doesn't fit" . . . ???
Head space checked?
Carbon ring present?
Head space checked?
Carbon ring present?
Sounds like something might be catching and pushing the neck and/or shoulder down causing that area to expand from some pressure. . . ??? To see if any of this is true, I'd take some measurements, before and after seating, of the case's overall length, the head space and the diameter of that area just below the shoulder.
Check this thread out, similar problem, I know it doesn't mention binding at the same point on your case but it's occuring at the same stage, might be worth checking out. All he had to do was back his seating die out a bit.
This seems to have solved it. Ditched the expander ball on fl size die and used expander mandrel set up instead. Seated just fine. Dropped into the gauge without issue. Never ran into that before... thanks for the support.
sixstrings101 . . . . .
Google the Belted Magnum Collet Resizing Die, and you will see how to accurately resize the "pressure ring" on a belted case. I designed that die, and there are now almost 7,000 shooters using them. Let me know if you have questions.
Google the Belted Magnum Collet Resizing Die, and you will see how to accurately resize the "pressure ring" on a belted case. I designed that die, and there are now almost 7,000 shooters using them. Let me know if you have questions.
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