Very simple, actually.
Just some duplex shot combos.
Just using the highest capacity without the right recipe is asking for the wrong combo to go BOOM
I agree.
I am however, using the same wads and powder as shown in my loading data, and the same weight or less of a payload- just putting different stuff in the cup.
Just using the highest capacity without the right recipe is....
....not what I was intending.
I think the thought of that occurring started somewhere around the time RC joined in.
As an example, lets look at this :
1 1/8 oz ( MAX 492 GR ) combos using RXP 12 wad and .171 bush of unique :
10x .311 balls = 450g
6x .311 balls and 1x .430 ball = 389g
3x .311 balls and 2x .430 balls = 373g
The RXP12 wad throws 1-1/8 oz of shot very well using this charge weight for me, in my shotgun.
I am well aware that Unique will not deliver maximum velocity, nor power, in buckshot....
That aside...
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I'm trying to find a wad and charge combo that would accommodate :
6x .311 balls and 2x .430 ball = 508 g
Or perhaps
12x .311 balls = 540g
Or perhaps
Anything else under 548grs.
It would appear that the aa12r wad would allow a payload of 601grs, using a .155 bushing (24.3g) of SR7625.... or should I just stick with HS-6 ?
Ideally, I would like to be able to use Unique... but I don't think its going to work right past 1.125 oz of payload.
Perhaps I should have stated at the beginning that the powder and primer type were not important to me...as I would build the rest of the shell around the wad if I could find one that would fit the payload I had in mind- my mistake.