To what end is this information useful.?Another way why?
Once you get this. What do you intend to do?
Lately have seen a few people asking. Very technical questions that in the end. They really need to ask a simple question.

 

AHI,
To determine the amount of shot and quality of crimp. I have been using WAA1078-12 wads for years, I wanted to try some others for experimentation purposes. I recently changed from WAA1078-12 & DR SG1 to DR XXL (Pink) in 7/8 oz loads. The crimps are ever so slightly coned (upwards). Same amount of shot, so the shot cup and or total height must be different since WAA1078-12 are perfect. Yes, the wad is seated down adaquately on the powder.

So, I wanted to ask the professionals. Does that explain it clearly enough? Lol

Jamie

 

So if I measure one or the Winchester wads like the chart . That has been postponed. will it help you?
Or not?

 

Clearly yes. Now understand this. The target could care less what the crimp looks like.

 

Not true. My targets told me they prefer a pretty crimp.

 

Buy em. Try em. Can't have too many options on hand. They all get used sooner or later.

I recently had a 1 ounce shot bar that was dropping 29 gm of shot. One ounce of shot is 28.35 gm and the extra was just enough to mess with my crimps. After struggling with 3 different powders and 5 different wads in an effort to overcome the issue i had a stroke of genius....

I mixed up some 1 minute epoxy and put a dab in the shot cavity. One hour later, after a little rasp-and-try, rasp-and-try, I ended up with a bar dropping 28 gm and I suddenly have a dozen options for beautiful crimps.

Guess what happens if I decide I want to drop 27gm or 30 gm? It ain't rocket science.

 

Just went and measured the two (2) wads in question. WAA1078-12 cup width 16.88mm and 45.09 mm height. DRXXL - cup width 15.94 mm and 43.92 mm height.

There's my answer. No, I don't have an O.C.D. problem. Lol.
Jamie

 

When you are having a stack height issue, change powder or wad. Market conditions determine which is easier. I have actually found this forum to be pretty good on dealing with stack height issues. A few knowledgeable people will know which wad or powder change will do the trick, you just have to figure out which people are knowledgeable.

 

Here is an example of the DRXXL. Two different hulls. Rem STS and then Clay and Field. These photos were taken using Clays powder. (A big fluffy powder that really fills the hull.)
The Clay and Fields didn't crimp as well as the STS.
I recently ran a case of Gun Clubs with Red Dot using CB 1078-12 wads (Silver ones). They worked great with Red Dot.
I have not tried either with a dense powder.
The top X on the DRXXL is made to compress and may be easier to load a wider range of powder. I took a light to see what the CB wads did. They were compressed also. Not as much though.

Good luck, Be Safe

 

Birdk9, all your crimps looked pretty good. If you want the ones with a small hole in the center all you need to do is add a bit more start crimp so there's more material for the final crimp. You can also on a SS do some careful adjusting of the final crimp so there's a taper radius on the shell. With a progressive press, there's another station to get this.
There is no CB-1078-12. The 1078 is a 20ga wad, the 0178 a 12ga wad, so the correct nomenclature is CB-0178-12 for 12ga wads.
I load Gun Clubs, Nitro, Clay and Field, or STS hulls and don't change anything. But then maybe I'm not quite as picky as others. None of the clay birds I shoot have ever had a bad thing to say about how the crimp end of my shells look.
I've said this before on another thread, or maybe forum, the cushion area is just that, a cushion area for when the shell is fired and the shot is cushioned so it doesn't deform so much, not for handloaders to compress it when reloading. You're just defeating it's purpose. Use the correct wad.