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MEC single stage with 1/2g shot bar
peddler
Member Posts: 881 ✭✭✭✭
I have a new MEC single stage reloader for 410 gauge with a 1/2 grain shot bar. With 7 1/2 oz. shot it drops on average 200 grains of shot, should be about 218 grains. With the new Win. AA hulls and just 200 grains I do not get a good crimp. But up the shot to 218 grains and the crimp is near perfect. Are they any way to correct the shot drop? Thanks
Comments
This is true for ALL volume type charge bars. I found my 1 1/8 ounce bar was dropping just a hair over 1 ounce of #5 and my 1.5 ounce bar was closer to 1 3/8 ounce when loading #4 shot.
Example. 1oz of shot is 437.5grs on the scale, but my Mec 1oz(volume) bar will drop #6 shot @425grs on the scale using Eagle brand shot.
Another thing, shot size determines the scale weight of a load also. If you use a 1oz shot bar to load with, #9 shot will drop a denser load by volume and heavier load on the scale because it fills up the cylindrical shape of the shot cavity in your charge bar better than say #6 shot.
To address your crimp problem you can lower or raise the wad pressure to help fill or pack the hull cavity to get your shell to crimp better. If you take a 12ga loader for example. The metal tube pressing your wad into your shell will need adjusted down for heavier loads and up for lighter loads. This is because the wads are shorter for big loads so you will have room to get the powder, wad, & shot all inside before crimping. (5th line from top is 1-1/8oz)