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Hornady 366 win AA crimp help

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thelaserman

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Discussion starter · #1 ·
Hey all
I've got my press mostly working! And have loaded about 200shells. They go bang and most of the time the clays break! Attached are pics of my finished rounds, I seam to end up with a small hole in the crimp and the occasional pellet falls out. My pre crimp is set to leave about a 3/16 gap and my final crimp is set at 11 threads. Any help on what adjustment I need to change would be helpful.

Using AAs, 15.7gr 700x, 1oz #8, clay buster 1100 wads

Thanks

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#2 · (Edited)
Laserman, welcome to TS.com. A couple of observations:

1. Your crimp depth is too deep. Adjust the center of the final crimp die upward a half turn at a time until the depth is the thickness of a dime.
2. I'd say your stack height is a bit short. How much, if any, wad pressure are you using. If you are applying significant wad pressure, adjust the wad seating die upward a half turn at a time until the wad pressure indicator just wiggles a bit.

Try these two adjustments and then come back and show us what you have.

PS: Could you add a pic of the hull after the shot drop and before the precrimp, from the top, so we can see how high/low in the hull the level of the shot comes to?
 
Discussion starter · #3 ·
Nebs said:
Laserman, welcome to TS.com. A couple of observations:

1. Your crimp depth is too deep. Adjust the center of the final crimp die upward a half turn at a time until the depth is the thickness of a dime.
2. I'd say your stack height is a bit short. How much, if any, wad pressure are you using. If you are applying significant wad pressure, adjust the wad seating die upward a half turn at a time until the wad pressure indicator just wiggles a bit.

Try these two adjustments and then come back and show us what you have.

PS: Could you add a pic of the hull after the shot drop and before the precrimp, from the top, so we can see how high/low in the hull the level of the shot comes to?
Click to expand...
I had never adjusted the wad plunger... I just rose it up a bunch to the point where it slides the wad in just to touch the powder, the Guage doesn't move. I backed the crimp plunger screw out a turn, then back in a bit. I understand how the crimp plunger is adjusted, but not totally sure what the effect of turning the die body up and down does.... It's currently set to 10 threads. I would guess the stack still seams a bit low. I'm using some old clay busters they are white, not the new pinks, but I doubt the age is the issue. The crimp depth at the edge is .056in
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#4 · (Edited)
Looks a bit better but the level of the shot in the hull still looks low. Are you sure those wads are 1 oz?

The reason the adjustment of the crimp die body is important is because it's tapered on the inside and that hull you're using is straight walled. Adjusting it upwards reduces pressure on the sides of the hull. Hornady makes a straight walled crimp die body that's available on special order. You have to ask the for it.
 
#5 ·
Nebs said:
Looks a bit better but the level of the shot in the hull still looks low. Are you sure those wads are 1 oz?

The reason the adjustment of the crimp die body is important is because it's tapered on the inside and that hull you're using is straight walled. Adjusting it upwards reduces pressure on the sides of the hull. Hornady makes a straight walled crimp die body that's available on special order. You have to ask the for it.
Click to expand...
Those are not straight walled. Nothing like Federal anyway.

He needs a taller wad or more shot.
 
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Discussion starter · #6 ·
Thanks for the help everyone! It was the wads. I bought this setup used and it came with a bunch of wads. I know the cb 1100 are supposed to be pink, I just assumed the bag I had was labeled correctly and they just used to be white. Needles to say the previous owner must have thrown 1 1/8 Oz wads in the 1 oz bag. I switched to the proper pink ones and now it's working! Though in the process I broke my crimp starter....
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#8 ·
Dang Nebs, I had to go google that. What hull is he using? Looks like the old CF. On almost every thread involving issues with stack height/crimp on HS hulls, the advice is always go 1/8 oz. wad capacity lghter (taller legs), because of the lack of room in the hull compared to the old CF hulls. Now, we are advising him to put an ounce and an eight wad in for a 1 ounce charge. I’m getting more confused by the day.

My rule of thumb that has never changed for stack height is 3/8” from top of hull mouth to top of shot level in wad. It’s worked for me quite well. Perfect crimps every time
 
#10 ·
dirt stirrer said:
Dang Nebs, I had to go google that. What hull is he using? Looks like the old CF. On almost every thread involving issues with stack height/crimp on HS hulls, the advice is always go 1/8 oz. wad capacity lghter (taller legs), because of the lack of room in the hull compared to the old CF hulls. Now, we are advising him to put an ounce and an eight wad in for a 1 ounce charge. I’m getting more confused by the day.

My rule of thumb that has never changed for stack height is 3/8” from top of hull mouth to top of shot level in wad. It’s worked for me quite well. Perfect crimps every time
Click to expand...
Hulls are AAHS. And you are confused. The legs on the 1 1/8 oz wad are shorter than those on the 1 oz. wad. You use the 1 1/8 oz wad with the HS hull with 1 oz of shot to bring the stack height down. He put the 1 oz wad with the longer legs in and increased the stack height too much.
 
#11 ·
Nebs said:
Hulls are AAHS. And you are confused. The legs on the 1 1/8 oz wad are shorter than those on the 1 oz. wad. You use the 1 1/8 oz wad with the HS hull with 1 oz of shot to bring the stack height down. He put the 1 oz wad with the longer legs in and increased the stack height too much.
Click to expand...
The pics in original post were dished. 15.7 gr is a pretty light load. Looked like he needed taller legs to me. Mebee I missed something. But, I was thinking reverse, good catch. Less room in hulls would take a shorter wad, but he needed a taller wad according to his first pics.

But, I googled crenellated, and still confused on what it referred to on a crimped hull, splain it to me Lucy.
 
#12 ·
The pic of the crimped hull with the channel locks in the background is crenellated. He does need taller legs only the 1 oz wad he went to had legs that were too tall, resulting in a tented and crenellated crimp.
 
Discussion starter · #13 ·
I think I will try and put a bit more pressure in the wad and see if that fixes rhe height. I think the ridges on the top are from messing up the pre crimp, it got out of adjustment. I'll play arou d with it some more on Monday. And let everyone know how it goes.

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#15 ·
I was thinking about this overnight and the 1 oz. wad has legs that are too tall and teh 1 1/8 oz are too short for the load, you need something in between. Above, i mentioned the DRA12 1 oz. pink wad as a possible solution, disregard that suggestion. After thinking about it, that wad would only exacerbate the dished crimp problem. The wad you need is the DRA12 1 1/8 oz wad (comes in at least 2 colors, bronze and blue, depending on resin availability). It has legs that are a bit shorter than regular 1 1/8 oz wads. I'm thinking the light powder charge is what is causing the stack height issues. More powder would bring the stack height up but that would cause the velocity to increase, giving you more recoil. Bumping the powder charge to 16 gr. will not do much to the stack height.
 
#16 ·
Nebs is a genius on the 366 and probably other stuff too. He sure helped me with my problem on the 366.
 
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