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I would like to simulate Winchester's 20 ga.low speed load that goes 980 fps.
Hodgton's site recipes are all 1150 or so. has anyone had any success loading
something like this?
 

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You don't mention what you are using for powder. If I was pursuing this I would look for the highest pressure low speed load in the book and interpolate for the desired result. I would start with a 15 percent reduction in powder and go to the chronograph for fine tuning.
The problem is that you NEED pressure to get proper burning. When pressure is too low a load will get filthy with unburned powder.Maybe if you call Winchester they will help you out.

HM
 

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You can find the load you want on Hodgdon's website. Win. AA hull. Win AA wad (CB-clone wad ok) with a 1 1/8 oz. of shot. Followed by 12.3 grains of Win.AA Lite powder. For a load that is 980 fps. Good Luck to Ya. break em all Jeff
 

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My light load for 20 gauge is Win AAHS hull, CB 3/4 ounce 20 gauge wad, 11.2 grains of Green Dot, Win 209 primer and 11/16 ounce of lead. I remember the Prochrono measured 1050fps. It is a little dirty and a real softy. I made this load for my old 1913 Ithaca Flues 20 gauge.
 
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