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 Post subject: 16 gauge Bismuth load question
PostPosted: Tue Sep 08, 2020 4:26 pm 
Field Grade

Joined: Fri Mar 16, 2012 11:25 am
Posts: 32
I have an older Browning A516 gauge shotgun that I’d like to use while duck hunting. Not able to use steel shot so looking at bismuth. There is a recipe in Lyman’s 5th reloading manual that I’d like to try as it is listed.

Here is the recipe:
Hull: Remington
Primer: Remington 209
Powder: Blue Dot 26 grains
Wad: SP16
Shot: 1-1/8 oz. bismuth
Pressure: 9200
FPS: 1220

Any thoughts pro/con on using this load given the older gun?

I also was thinking about making a wad swap and wondered what changes in pressure and FPS I might find:

Here is the load with the changes.

Hull: Remington
Primer: Remington 209
Powder: Blue Dot 26 grains
Wad: R16
Shot: 1 oz. bismuth

I’ve thought about getting ammunition from Boss Bismuth but wondering if those rounds would be ok for the older shotgun. Anyone use their copper plated bismuth in older shotguns? Don’t want to be up the older gun.

Thanks in advance!




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 Post subject: Re: 16 gauge Bismuth load question
PostPosted: Tue Sep 08, 2020 8:55 pm 
Diamond Grade

Joined: Wed Jun 20, 2012 11:31 pm
Posts: 1434
I load the first recipe (sort of) with 25.8 grns Blue Dot and 1 1/16 oz of 4's. Very nice Load. Hodgons has a couple of good Universal loads as well in a 1 oz load. I shoot prewar Ithaca 37's and I want Gentle.I actually prefer the Hodgon load.


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 Post subject: Re: 16 gauge Bismuth load question
PostPosted: Wed Sep 09, 2020 9:47 am 
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Joined: Thu Mar 05, 2009 10:56 pm
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Location: Central ND
treeduck71,

If you change to a different wad, there is almost no doubt that the pressure will be higher than using the SP16 wad. There aren't very many 16 ga. wads and generally they all exhibit higher chamber pressures using the same components than an SP16 will. I am sure there are exceptions but not very many. How much higher will depend on the load.

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aka Mr. Tactful. Common sense no longer appears to be common.
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 Post subject: Re: 16 gauge Bismuth load question
PostPosted: Wed Sep 09, 2020 11:20 am 
Field Grade

Joined: Fri Mar 16, 2012 11:25 am
Posts: 32
I understand that the wad change could cause an increase in pressure. But wouldn’t a decrease in shot weight cause a decrease in pressure? The shot weight would go from 1-1/8 ounce to 1 ounce.
Worst case I would send a few in to get tested.


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 Post subject: Re: 16 gauge Bismuth load question
PostPosted: Wed Sep 09, 2020 1:24 pm 
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Location: Central ND
Once you start changing things it is hard to know what is actually going to happen. You could end up with a terrible load if you start dropping the shot weight. Blue Dot wants to work, dropping the payload isn't the direction i would recommend.

YMMV

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Mark

aka Mr. Tactful. Common sense no longer appears to be common.
NSCA#544066


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 Post subject: Re: 16 gauge Bismuth load question
PostPosted: Wed Sep 09, 2020 2:29 pm 
Presentation Grade

Joined: Sat Feb 19, 2005 11:16 am
Posts: 967
Treeduck, that first load listed looks good all the way around. Your A5 can handle it, so go with it.

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 Post subject: Re: 16 gauge Bismuth load question
PostPosted: Wed Sep 09, 2020 8:44 pm 
Presentation Grade

Joined: Sat Apr 20, 2013 7:43 am
Posts: 620
You could load a Fed paper B/W hull , rem 209p ,26.0 grs Longshot with 1 0z in a Rem SP16 ?
it looks like 1330 fps / 11,400 in the book !


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 Post subject: Re: 16 gauge Bismuth load question
PostPosted: Wed Sep 09, 2020 9:27 pm 
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Location: Central ND
Yes he could, the issue is the Longshot will migrate past the obturating cup on the SP16. Especially if the shell gets shucked in and out of the A5 a few times and gets carried around. It doesn't happen with every shell but it happens enough that it isn't worth the trouble.

There is a solution but it adds a step and sucks if you are using a progressive........ use a 16 gauge overshot card or a 12 ga. Tightseal over the powder and under the wad. I like the Tightseal best. Do not use any kind of plastic as it will raise chamber pressure.

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aka Mr. Tactful. Common sense no longer appears to be common.
NSCA#544066


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 Post subject: Re: 16 gauge Bismuth load question
PostPosted: Thu Sep 10, 2020 5:49 pm 
Diamond Grade

Joined: Sun Dec 14, 2014 4:28 am
Posts: 1110
9200 psi load, A5... load it up and go. That is a med pressure load in a gun designed to shoot full loads to saami specs, and beyond rigorous testing. What makes you think you have to baby it, is there some official actual known reduced pressure on certain year A5s, or is this just something in your own mind? Honest question, thx.


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 Post subject: Re: 16 gauge Bismuth load question
PostPosted: Thu Sep 10, 2020 7:31 pm 
Field Grade

Joined: Fri Mar 16, 2012 11:25 am
Posts: 32
It was made in 1927. I wanted to be careful not to run loads in it that could cause issues. This is my first A5 and first gun this old so wasn’t sure about what it could handle.




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