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20g load data


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2 hours ago, Gregsheffield said:

Hi. Im looking for some help. I need some load data for 20g has to be a 70mm as using in a semi

20 gauge cheddite hull

70mm 

fibre wad 

vectan A1 powder 

2000 primer 

 

i need the powder weight and also over shot card and wad sizes.

 

thanks

on a1 try about  1.35 gram and 18mm wad        that shud leave u about 11mm for your crimp    overpowder     card 4mm   on loading 20 bore  now     cheers   george 07714 323 909

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4 hours ago, Gregsheffield said:

Hi. Im looking for some help. I need some load data for 20g has to be a 70mm as using in a semi

20 gauge cheddite hull

70mm 

fibre wad 

vectan A1 powder 

2000 primer 

 

i need the powder weight and also over shot card and wad sizes.

 

thanks

if 24 gram try the a1 load if 28 grams try the ao powder please put shot wieght in future   bit confusing not knowing the  charge load   cheers   g

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Found the certificate for the A1 load: 

1,25. X 27 gualandi wad star crimp at 60 mm 

AVG: 923 bar, 393 m/s one test went to 1004 bar

Definitely not a powder for 28g in 20 bore.

I think you can try 1,20-1,25 X 24-25 g with star crimp or 26 for RTO in a 70mm hull

Edited by Continental Shooter
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