7/8oz load crimp...?

[Kp321]

If you do add a card wad, put it in the bottom of the shot cup, not on top. The card wad can cause a hole in the pattern. For the same reason, I prefer to use candle wax over Elmers. The Elmers can stick pellets together and cause a hole.

 

[MEHavey]

Guys, there is nothing wrong with the OP's setup/Shot Cup fill/level



Adjust the crimp screw/cam if he wants to change the appearance on his shells.

 

[RealGun]

Volume is volume, troops.
The #8's pack into the same charge-bar volume as #9s

(the #8 volume may weigh slightly less due to looser packing,
but the volume occupied in the shot cup is the same)

If the load says 7/8 oz I believe you need a different volume for #8 than for #9, and then a different bushing or adjustnent.

 

[MEHavey]

Bowing to the more experienced here, I'm going to suggest that shotgun components & loading machines
(aka shotcups/MEC's, etc, etc)are designed for a specific volume of shot -- be it 7-1/2, 8, or 9. Actual weight
differences get lost in the tolerances.

You get down to #4s or #2s, maybe not so much.


.

 

[243winxb]

By volume, magnum shot is lighter in weight then chilled shot. Lawrence brand. The added antimony in mag shot makes it lighter and harder. The 410 skeet load needs every pellet in the 1/2 oz load. More pellet count per 1/2 oz of magnum shot.
Yes, i have counted every pellet in a Win factory 410 shell & the drops from my modified Mec charge bar.

The Mec "skeet" shot bars were made to always be under whats listed. Back in the day.

 

[MEHavey]

Now that you (243win) mention it, my 410/MEC-600JR
drops exactly 0.493714 oz (or so) of Eagle Magnum #9s
( just checked ... )

 

[RealGun]

MEC charts show different bushings for different size ranges of shot but only for steel.