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Wad Substitution Question.

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MBM1565

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Discussion starter · #1 ·
I want to use Vectan A24 data listed for a 12 ga.
7/8 oz load in a AAHS hull but substitute the wad.
Data is AAHS,7/8 oz shot, 18 gr. A24, Win 209 with WWA12L wad. 1300fps. With 10200 psi.
Would it be acceptable to sub a WAA12SL wad to create more room for my components in that hull?
 
#2 ·
If the pressure was in the 7000 to 8500 psi range I might try a limited test. At 10,200 psi I would not try it in my gun. Too close to the max pressure limit to play around with a possible pressure spike.
If I really wanted to shoot the load I would send it off for testing.
I have never used Vectan powders and do not have any idea how they respond to temperature changes. (Winter versus summer) That will affect pressure also.
 
Discussion starter · #3 ·
Answered my own question.
Found a 1 oz. I can use with Vectan A24 data.
AAHS, 17.1 gr. A24, CB4100, Win 209 7/8 oz shot.
1265fps at10,000 psi.
Should make enough room for fit in that hull.
 
Discussion starter · #5 ·
I am using a UCB on my Grabber. At the time I started this thread I thought I was out of CB 4100's but found some.
Still I was wondering if it would be acceptable to use the Win SL instead of the L in 7/8 oz. applications? I would still be using the same payload with only the wad legs of the SL being shorter.
 
#6 · (Edited)
There has been multiple threads about stepping down in wad height when using the AAHS hulls, as they don’t have the internal volume as the old CF hulls. Both wads mentioned in the OP are identical in construction, just a taller leg height in one. I don’t see a problem in subbing wads to get stack height right.
 
#7 ·
To summarize the answer to the OP's question: YES. People routinely go up or down a wad size of the same type in order to adjust stack height. And it's not just with the AAHS. In the Rem hull, I go the other way, from a 9/8 oz. to a 1 oz.wad, when using Titegroup.
 
#12 ·
CP870 said:
Wad weight would be least of the worries. Cup size and sealing surface would be more important than the minute difference in weight......
Click to expand...
I agree with this. When substituting wads to alleviate stack height problems, make sure to use a wad of the same type. A review of many reloading manuals will show that Rem wads generally produce lower pressures then AA-type wads. Duster wads appear to produce even higher pressures. It mainly has to do with the design of the over-powder cup and how well it provides an obturating seal on ignition.
 
#13 ·
MBM1565 said:
I am using a UCB on my Grabber. At the time I started this thread I thought I was out of CB 4100's but found some.
Still I was wondering if it would be acceptable to use the Win SL instead of the L in 7/8 oz. applications? I would still be using the same payload with only the wad legs of the SL being shorter.
Click to expand...
Looks like same bulk as green dot. I need something bulkier i have the opposite problem. I would subtitute these essential identical ( other than hight) wads on my loads.
 
Discussion starter · #14 ·
I substitute these wads on lower pressure loads already. But because A24 produces 5 digit pressures in light loads I was a little worried about being so casual about swapping out these 2 wads. This to me should be a by the book load.
 
#15 ·
MBM1565 said:
I substitute these wads on lower pressure loads already. But because A24 produces 5 digit pressures in light loads I was a little worried about being so casual about swapping out these 2 wads. This to me should be a by the book load.
Click to expand...
If you think pressure pressure will be Abby Normal with a wad sub, you could always send some off to be tested.
 
#16 ·
Nebs said:
So, the difference in wad weight would be enough to elevate the pressure of the load into the danger zone?
Click to expand...
Possibly, but the increase would have to be a large one in a load already at or near max pressure. My point was that the OP could swap out the SL for the L with no pressure concerns if the SL was lighter (which I believe it is, if memory serves).
 
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