roughshooter Posted March 20, 2021 Report Share Posted March 20, 2021 I am just starting to load my hoard of Bismuth up in readiness for next season. I have started off with some 12ga 3” 1 1/2oz loads (3.75mm) that have Plastic wads but am interested in my ones pet loads utilising fibre wads and maybe 70mm cases. I have a few KG of 5 and 3’s that I would like to load into standard cases for general ducks regards Graham Quote Link to comment Share on other sites More sharing options...
roughshooter Posted March 23, 2021 Author Report Share Posted March 23, 2021 The fountain of knowledge seems to have dried up"............. Quote Link to comment Share on other sites More sharing options...
London Best Posted March 23, 2021 Report Share Posted March 23, 2021 1 hour ago, roughshooter said: The fountain of knowledge seems to have dried up"............. They are all too tight to use bismuth! Quote Link to comment Share on other sites More sharing options...
Guest cookoff013 Posted March 23, 2021 Report Share Posted March 23, 2021 We had a chat, about bismuth being 0.88x density of lead. When i did my 3" it was for fast loading on a machine. you could load up similar in 70mm with a RTO. Quote Link to comment Share on other sites More sharing options...
roughshooter Posted March 24, 2021 Author Report Share Posted March 24, 2021 20 hours ago, cookoff013 said: We had a chat, about bismuth being 0.88x density of lead. When i did my 3" it was for fast loading on a machine. you could load up similar in 70mm with a RTO. I was just hoping that there may be some established data out there for what I need but will have to work on something. Your data set was for 32g Bismuth as I recall? Ideally I am looking for a 42g fibre lead load that I can substitute lead by Bismuth Volume..... will work it out Quote Link to comment Share on other sites More sharing options...
Guest cookoff013 Posted March 24, 2021 Report Share Posted March 24, 2021 Yeah. I did a 42g fibre lead too. Quote Link to comment Share on other sites More sharing options...
Dave at kelton Posted March 24, 2021 Report Share Posted March 24, 2021 Just looking at some old data from clay game. There is a 1 5/8 lead load using 33gns Blue dot and 19mm felt for 4 ton proofed guns. Not sure if that helps. Quote Link to comment Share on other sites More sharing options...
roughshooter Posted March 24, 2021 Author Report Share Posted March 24, 2021 1 hour ago, Dave at kelton said: Just looking at some old data from clay game. There is a 1 5/8 lead load using 33gns Blue dot and 19mm felt for 4 ton proofed guns. Not sure if that helps. Thanks Dave presuming that is a 3” load but will have a play 1 hour ago, cookoff013 said: Yeah. I did a 42g fibre lead too. I thought that was subsonic? Quote Link to comment Share on other sites More sharing options...
Dave at kelton Posted March 24, 2021 Report Share Posted March 24, 2021 52 minutes ago, roughshooter said: Thanks Dave presuming that is a 3” load but will have a play I thought that was subsonic? Yes 3” load Quote Link to comment Share on other sites More sharing options...
Guest cookoff013 Posted March 25, 2021 Report Share Posted March 25, 2021 yeah it was 42grams subsonic, but with the drop in bismuth shotweight, it would easily make it transonic 1200fps or so, with the same powder charge. if the powder was slightly increased, it would easily do 1250 for the lighter bismuth. there is an estimated powder charge that really should be bang on the money. i know we are not supposed to change loads. i forgot what the charge was, but it was on the list to re-proof, with itx and bismuth. the load had a 20mm fibre 4mm powdercard, so uses target fibrewad components. Quote Link to comment Share on other sites More sharing options...
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