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Subsonic 20 bore


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Another 20 gauge one that I'm in the process of trying for less demanding shots is 65mm Cheddite type case, CX2000 primer, 15grains of Vectan AS, 3mm nitro card and 19mm fibre wad, 21grams no5 lead shot, 6 petal crimp. 1025fps. 542bar pressure. This is meant to be for lamping bunnies where the range is pretty close, sort of like a heavy .410 load.

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Hi could I use vectran A1 as I have 4kg got the same cases and primers as you.thanks for quick reply. Tony

 

Not really. You need to get a recipe for that particular powder. I seem to recall that the Claygame CD had a fibre recipe for A1 using a CX2000 and 17grains of powder under 28grams of shot and it seemed to work well enough in my Hushpower but had no pressure data so you take your chances if you use it. Maybe you could make some up and get them to the proof house. That recipe also stated a 65mm case but it actually fits into a 70mm one which goes to show how flakey the data is.

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Hi that is what I am using but not had tested when my son comes up will get him to take some back to Midlands as he only lives five mile from Brum.he can get them tested for me.thanks for your reply sitsinhedegs.Tony

 

If you do get around to it let us know the results. You get 20 shots at the Proof House, 4x5 or 2x10 so you can try some variations on the theme to see what works best.

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