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 Post subject: Anyone use WAA20 or Claybuster CB1078-20 for 20ga 1oz loads?
PostPosted: Sat Feb 20, 2021 12:58 am 
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Anyone use WAA20 (not WAA20F1) or Claybuster CB1078-20 wads for 20ga 1oz loads?
Difference in size between the WAA and the WAA20F1 seems pretty small. I was looking at using about 15.8gr of Longshot and Cheddite or Nobelsport primers in AA HS hulls.




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 Post subject: Re: Anyone use WAA20 or Claybuster CB1078-20 for 20ga 1oz lo
PostPosted: Sat Feb 20, 2021 6:12 am 
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Try one or two, see if the stack height is ok.
I have my doubts but who knows.


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 Post subject: Re: Anyone use WAA20 or Claybuster CB1078-20 for 20ga 1oz lo
PostPosted: Sat Feb 20, 2021 7:42 am 
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Forty years ago I used WAA20 wads in a published 1 ounce load with Unique at ~1165 fps. It didn't seem like it would fit then, and it still doesn't seem like it would fit today, but it did.


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 Post subject: Re: Anyone use WAA20 or Claybuster CB1078-20 for 20ga 1oz lo
PostPosted: Sat Feb 20, 2021 7:48 am 
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A wad that will work and has just a little more room is the Remington RXP 20

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 Post subject: Re: Anyone use WAA20 or Claybuster CB1078-20 for 20ga 1oz lo
PostPosted: Sat Feb 20, 2021 8:36 am 
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casonet wrote:
A wad that will work and has just a little more room is the Remington RXP 20



I doubt you will be able to find them now.



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 Post subject: Re: Anyone use WAA20 or Claybuster CB1078-20 for 20ga 1oz lo
PostPosted: Sat Feb 20, 2021 12:21 pm 
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SP20 is my go-to for 1 oz in tapered cases.

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 Post subject: Re: Anyone use WAA20 or Claybuster CB1078-20 for 20ga 1oz lo
PostPosted: Sat Feb 20, 2021 12:54 pm 
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Only loads I see for WAA20 wads in 1 oz loads are for Cheddite and Fiocchi hulls with longshot on the Hodgdon site. Never loaded them. I’ll look in some of my old reloading books.

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 Post subject: Re: Anyone use WAA20 or Claybuster CB1078-20 for 20ga 1oz lo
PostPosted: Sat Feb 20, 2021 1:19 pm 
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I looked through my old reloading books. Even the late 1980’s Win books show no WAA20 wads in 1 oz.
However I did find a load in a 1992 Hercules (Alliant) book.
1 oz
20 gauge Win AA hull. The old CF but they say they load the same as the HS.
16.5 gr Herco
Win 209 primer
WWAA20 wad
1165 FPS
10,400 psi

I think that’s about all you are going to find.

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 Post subject: Re: Anyone use WAA20 or Claybuster CB1078-20 for 20ga 1oz lo
PostPosted: Sat Feb 20, 2021 2:56 pm 
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The only domestic 1oz 20ga wad left standing was the SP20S, but I doubt you will find any right now, and the ones Remington put out several years ago were garbage (off sounding loads, disintegrating wads).

Since it can be difficult to get 7/8oz of shot to fit properly with WAA20 or CB clone wads unless you use a VERY dense powder, I doubt you're going to have much luck stuffing 12.5% more shot in.

There is basically zero chance you'll get away with a WAA20 or CB in a AAHS hull and 1oz of shot with ANY powder choice. There are many people using that hull/wad combo for 3/4oz because even 7/8oz doesn't fit properly with many common 20ga powders (Unique, Universal) unless you crush the ever loving hell out of the leg section.

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 Post subject: Re: Anyone use WAA20 or Claybuster CB1078-20 for 20ga 1oz lo
PostPosted: Sat Feb 20, 2021 3:18 pm 
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2000 Alliant manual.

20 gauge RXP hull,
WAA 20 wad,
15.5 grains Unique powder,
1 oz shot,
1,165 fps.

It fit for me.


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 Post subject: Re: Anyone use WAA20 or Claybuster CB1078-20 for 20ga 1oz lo
PostPosted: Sat Feb 20, 2021 3:42 pm 
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Skeet_Man wrote:
The only domestic 1oz 20ga wad left standing was the SP20S, but I doubt you will find any right now, and the ones Remington put out several years ago were garbage (off sounding loads, disintegrating wads).

Since it can be difficult to get 7/8oz of shot to fit properly with WAA20 or CB clone wads unless you use a VERY dense powder, I doubt you're going to have much luck stuffing 12.5% more shot in.

There is basically zero chance you'll get away with a WAA20 or CB in a AAHS hull and 1oz of shot with ANY powder choice. There are many people using that hull/wad combo for 3/4oz because even 7/8oz doesn't fit properly with many common 20ga powders (Unique, Universal) unless you crush the ever loving hell out of the leg section.


I didn't realize the SP20 was discontinued.

I guess the option is to use wads like the Gualandi when I run out of SP20's. I like 1oz of 7.5's for birds. Gives me about the number of pellets as 7/8 of #8, but the birds get a lot sicker with a 7.5 in them.

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 Post subject: Re: Anyone use WAA20 or Claybuster CB1078-20 for 20ga 1oz lo
PostPosted: Sat Feb 20, 2021 4:26 pm 
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Joined: Sat Nov 30, 2013 8:21 pm
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So, I loaded some up and they appear to fit, in that the hull crimped and closed with all the shot in it. I did notice the shot was above the tops of wad petals, but that was also the case with 7/8 of shot too. I loaded them on my Ponsness-Warren 375. I did notice they seem about a 10th of an inch longer than my factory AA loads, but I didn't look I could make them any shorter...the resizing die looks like the limiting factor.

They're the three top ones in the bottom group are 1oz in WAA20. The ones in the top group are 1oz loaded with WAA20F1 wads. Ignore the bad ones. Some old brittle wads.

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 Post subject: Re: Anyone use WAA20 or Claybuster CB1078-20 for 20ga 1oz lo
PostPosted: Sat Feb 20, 2021 5:40 pm 
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The sidewalls look a little bulgy on some.

Do you plan on sending them out for pressure testing? The AAHS/Longshot loads listed are at or near SAAMI max pressure with the wads they list.

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 Post subject: Re: Anyone use WAA20 or Claybuster CB1078-20 for 20ga 1oz lo
PostPosted: Sat Feb 20, 2021 5:47 pm 
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Something of interest would be to cut open a factory WAA 20ga 1oz shell and see what wad they are using. I wonder if they are just jam wedging a WAA20 in, or if they are using a factory-specific wad that they don't sell to reloaders.

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 Post subject: Re: Anyone use WAA20 or Claybuster CB1078-20 for 20ga 1oz lo
PostPosted: Sat Feb 20, 2021 6:14 pm 
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Joined: Fri May 25, 2012 5:50 pm
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I have 500 of the SP20 1 ounce wads that I'd be happy to trade straight across for an equal quantity of CB 1075-20

I'm in Alaska so the postage may not be worth your efforts. Flat rate box is 21.90


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 Post subject: Re: Anyone use WAA20 or Claybuster CB1078-20 for 20ga 1oz lo
PostPosted: Sat Feb 20, 2021 6:46 pm 
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Skeet_Man wrote:
Something of interest would be to cut open a factory WAA 20ga 1oz shell and see what wad they are using.


I candled an RXP 20 one ounce load. The wad doesn't appear to be an exact RXP20 wad.


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 Post subject: Re: Anyone use WAA20 or Claybuster CB1078-20 for 20ga 1oz lo
PostPosted: Sun Feb 21, 2021 1:34 pm 
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I'm loading 19 grains of WSF and a w209 with a CB1078 and 1oz of #5 into a federal/estate hull with good results.I set the wad seat at 1oz. It's a pretty stout load.


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 Post subject: Re: Anyone use WAA20 or Claybuster CB1078-20 for 20ga 1oz lo
PostPosted: Sun Feb 21, 2021 6:13 pm 
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Joined: Sat Nov 30, 2013 8:21 pm
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Skeet_Man wrote:
The sidewalls look a little bulgy on some.

Do you plan on sending them out for pressure testing? The AAHS/Longshot loads listed are at or near SAAMI max pressure with the wads they list.

I hadn't planned on it. SAAMI max is 12,000psi.
According to the Hodgdon website:
AAHS, 1oz shot, 15.7gr of Longshot with Win209 is 1,165fps at 10,900psi.
AAHS, 1oz shot, 17.2gr of Longshot with Win209 is 1,220fps at 12,000psi.

I'm throwing 15.8gr of Longshot, so I'd think my loads are toward the middle to lower end of most of the Hodgdon 1oz loads.

I have noticed that the 1oz column of shot is taller than the wad petals with both the WAA20F1 and the WAA20 wads. However, that's also the case with both of them (even the WAA20) with 7/8oz of shot...it's noticeably past the top of the wad petals. How big a deal is that?

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 Post subject: Re: Anyone use WAA20 or Claybuster CB1078-20 for 20ga 1oz lo
PostPosted: Sun Feb 21, 2021 6:34 pm 
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mpolans wrote:
Skeet_Man wrote:
The sidewalls look a little bulgy on some.

Do you plan on sending them out for pressure testing? The AAHS/Longshot loads listed are at or near SAAMI max pressure with the wads they list.

I hadn't planned on it. SAAMI max is 12,000psi.
According to the Hodgdon website:
AAHS, 1oz shot, 15.7gr of Longshot with Win209 is 1,165fps at 10,900psi.
AAHS, 1oz shot, 17.2gr of Longshot with Win209 is 1,220fps at 12,000psi.

I'm throwing 15.8gr of Longshot, so I'd think my loads are toward the middle to lower end of most of the Hodgdon 1oz loads.



Yeah, with the WAA20F1 wad, NOT the WAA20 wad, and they list NO recipes with Cheddite or Nobelsport primers. With those substitutions you have ZERO clue what the pressure is going to do, and would would not be surprised in the LEAST if the loads you put together were over max @ 12k PSI. Then again, it's your gun and you don't live near me, so best of luck.

Also curious if you bothered to scale the 1oz shot charge and make sure it's actually 1oz.



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Manufacturer of Custom Brass Barrel Weights for over/under, top single, and unsingle shotguns.


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