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Mec Bushing # for Win473AA & Win452AA

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Ramshot

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Discussion starter · #1 ·
Hello, just bought some Winchester 473AA and 452AA powder and seen on a
old AA wad box that 25grs of 473AA for 1 1/8 and 19.5grs & 20.5grs for 452AA
are recommended. What bushing numbers will throw the powder charges I mentioned for the MEC shotshell bushing chart? They are older powders but I got eight 1 lbs tins each for $75 off an old trapshooter who gave it up. Thanks for any info. Darrell Bennett BC,Canada
 
#4 ·
The bushing chart probably has several folds in the paper. Those are to fold the chart up and see if you can hit the trash can with it. USE A SCALE. Kidding aside, the chart should give you a good guestimate of which bushings you might start with testing in your search for the RIGHT one......:Bob Dodd
 
#6 ·
Darrell, I have loaded tens of thousands of win, rem,fed shells with 452AA. I have never used more than 18.2 or 18.5 grains. It is now called Super Target. I have used a PW 800B since 1976 and just recently bought a used Mec sizemaster to experiment with some 1oz loads. I think you will like the ball powder. Larry Evans
 
#7 ·
Pick a large bushing to start with, weigh the charge and go up or down from their. NEVER rely on a bushing chart as gospel. They're a staring place and a good scale will tell you when you get there.
 
#10 ·
From 14th ed of Win Reloading Components Catalog. These should give you a good starting point.

473 MEC #30 bushing 24.7 gr

452 MEC #29 bushing 19.6 gr (edited s/b #29 bushing)

Make sure you verify a bunch drops with a scale in the beginning and every now and then during the loading session.

Jason
 
#11 ·
I am using a MEC #29 bushing which drops 19.3 gr. of 452AA consistantly...

I am finding that this recipie is great for 1 OZ loads in AA hulls with AA12SL wad and W209 primer...

I am now experimenting with WSL ( Winchester Super Light ) powder which is another of my favorite charge from the past..

It's too bad that Winchester has changed from these great powders , go figure..

Robert Appleby
( Newfoundlander )
 
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