[HenryPeter]

So what have we learned going into the future. For me…shooting 2 different 410s and 28s ga.….if the hull fits coming out of the chamber it will (should) fit going back in. Has for me, so I keep my hulls dedicated to their specific gun. This saves me having to Super-size them.
Another is while the base will fit, the rim has expanded enough to prevent COMPLETE closure of the gun, enough to prevent the thumb latch from closing completely….preventing firing of the gun (Browning 725).
Finally I learned from a MEC expert that only a MEC 600 cranked down will do the rim (I believe), most MECs will not do the rim ( my 9000H will not).
3 things:
Match your hulls to your gun, no SSizing them.
Hull rim expansion, no issue if you follow #1.
Having a Super Sizer ($150) is a valued tool. Another shape of a dollar bill. Sell it later.

I have resized loaded rounds many times, still have all 12 fingers…no holes in ceiling.
So far.

R

 

[HenryPeter]

HenryPeter, I ve only got 1 410 so hulls were shot in that gun, sized and when primed, swelled those Rem hulls where chambering was “no go”. It’s a SA so fit a little more critical for correct functioning.

Side note, my AAHS and Fed Top Gun hulls didn’t do this …..

Yeh…..the power of SA ejection I guess. I only shoot O/Us and the system described works for me. Interesting your AA and Fed reloads work, not the Remingtons.
What primers are you using in the Remingtons?

H