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05-27-2022, 11:00 AM
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I have. And I have accumulated a lot of recipes, but nothing for Bismuth. BPI has warned me against replacing lead in recipes with bismuth claiming the harder shot would increase pressures.
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05-27-2022, 11:09 AM
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In theory the increase is under 1000psi, but this is only rumor and there is no substitute for testing your own loads. if you found a load that would work with room for the increase, send it to tom armburst and let us know please. I have loads that i use, but none are lab tested.
there is also alleged to be a load printed in last summers (i think) dgj, 16 ga bismuth with universal but I am not a subscriber. |
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| The Following User Says Thank You to Aaron Beck For Your Post: |
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05-27-2022, 12:36 PM
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Thank you Aaron. I'll post what I find out.
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| The Following User Says Thank You to Mark Sjoberg For Your Post: |
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05-27-2022, 02:51 PM
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#6 | ||||||
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BPI list this load in their # 11 Edition of The 16 Gauge Manual
bismuth 16 b. 2.5 inch Cheddite hull/ Ched209 primer/ 25 grns. Longshot powder/ Z-16 wad/ OS16- overshot card/ 7/8 oz bismuth either # 5,6 or 7 (382 grns.) and roll crimp PSI 7040/ FPS 1420 listed on page 75. Reminder this is a roll crimp load |
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| The Following User Says Thank You to Jim McKee For Your Post: |
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05-27-2022, 03:41 PM
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I for one am somewhat skeptical of BPI loads--they are usually quite "hot"--1400 fps and only 7040 psi, really?
A 1 oz lead load in 2 1/2" cheddite, 18 gr Longshot, SG 16 wad, W209 is listed at 1200 fps and 7270 psi. I know, different payload, different wad , but 6 gr less powder, but getting slightly higher PSI. Wouldnt want to shoot that first load thru damascus until I was sure data is accurate.
__________________
"How kind it is that most of us will never know when we have fired our last shot"--Nash Buckingham |
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| The Following User Says Thank You to Harold Lee Pickens For Your Post: |
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05-27-2022, 03:54 PM
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#8 | ||||||
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well, let me backpedal for a minute, on the 16 ga forum, they recommend taking a known lead load, and reducing it by 1/8 oz for Bismuth. I'll try and look for more info, cause I wouldnt mind reloading some for myself.
Clear as mud now, isnt it.
__________________
"How kind it is that most of us will never know when we have fired our last shot"--Nash Buckingham |
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| The Following 3 Users Say Thank You to Harold Lee Pickens For Your Post: |
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05-27-2022, 04:48 PM
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Harold
thats a reasonable starting point, but it should be noted that a 7/8 oz charge bar will not drop 7/8 of of bismuth shot because the densities are different. You probably know this already. Your eventual pressure may come close to the 1 oz load since the pellet counts are similar but it may exceed it too since the material properties of bismuth are different. I spoke with Tom Armburst about this at length last year with the best intention of sending loads for testing, but I couldnt get all the components I wanted to base my load on. His advice was to start with the dgj load. |
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05-27-2022, 04:54 PM
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I don't understand why more testing isn't going on with Bismuth. It's a great replacement for lead in our older sxs's. It's just so darn hard to find anything other than lead for the 2.5" 16 gauge. I guess BPI wants to sell it's ITX-10, which I would buy if I could get it.
Thanks for all of your input guys. |
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