Chamber size

[Stan Hillis]

It might be worth pointing out that the length of the loaded shell is not the length that matters. It is the length of the fired hull that matters. There is usually a greater difference in the two dimensions on star crimped shells than there is on roll crimped ones, IME.

Also, there is considerable difference between the overall lengths of unfired and fired shells between manufacturers, and loads. IOW, just because the box is marked "2 3/4" in no way means the shell inside opens up to exactly 2 3/4".

[Bruce Hering]

Originally Posted by Stan Hillis

It might be worth pointing out that the length of the loaded shell is not the length that matters. It is the length of the fired hull that matters. There is usually a greater difference in the two dimensions on star crimped shells than there is on roll crimped ones, IME.

Also, there is considerable difference between the overall lengths of unfired and fired shells between manufacturers, and loads. IOW, just because the box is marked "2 3/4" in no way means the shell inside opens up to exactly 2 3/4".

So true. I had a Mod 12 16 ga with the short chamber and ejection port. It would not eject Winchester ammo but would eject the old low brass Remington... Go figure.