BP - Pyrodex - 777 conversion chart? 3f and 2f

[Geofois]

Hey guys,

I downloaded a 2f chart but was using a link online for the 3f and now that link stopped working. I should have downloaded or did a print screen. Anyone happen to have a newer link or pdf? I've done some shooting so have some things written down but ideally a chart is easy. My brother gave me a couple pounds of each so I'll use them up. Pyrodex 2f and 3f work fine for the bp pistols probaby because they are round balls. For minies the bp works the best. 777 works great so far for the light weight 315g wadcutter minie.

[NapalmCheese]

I'm not sure what you're looking for. A chart that tells you how much BP == Pyrodex == 777 by weight?

So far as I know there is no chart that'll tell you how much FFg will be the equivalent of FFFg since both are intended to have different applications.

As for converting BP to Pyrodex, Pyrodex is supposed to be volumetric equivalent to BP, so you just load the same as black.

[Geofois]

Yeah there was 2 good charts that would list all the FFFG and another with the FFG powders. Not all of them but most of them. I'll see if I can post the FFG since I saved it. The FFFG chart had equivalents and also the actual weight using the volume measure so you could see 50g of probably standard BP 2f volume would show like 52g of 3f etc.. It's not really an actual 1:1 by volume comparison. Pyrodex has more energy in a given amount of volume and 777 is way more so you want to reduce it by 15%. I found even reducing by 15% it still much more energy.

I can probably just set up 100g on the volume measure and pour in 777 2f, then 3f and do the same for Pyrodex RS and P, then weigh them and call it a day

[Geofois]

I like to load my vials using my scale so I would just look up the equivalent weight and just quickly load a vial with my scoop and tap to get like 34.2g. I'm sure it doesn't matter that much but when I shoot I get more shots so that makes me happy =P.

[NapalmCheese]

Gotcha.

That chart you attached seems to be the weight of a charge of a sub compared to a 'standard' 100 grain volume.

I.e. a 100 grain volume measurement of FFg is equivalent to an 85 grain by weight charge of APP. That's how I see it anyway.

Yeah, for my black powder stuff I just load with dippers, or drop a charge until it fills the case. I don't weigh anything.

[XL650]

Probably the best way to go.

[Darto]

Pyrodex and 777 info from Hodgdon. It says reduce charges (by volume, not weight) 15% if using 777 to get same velocity.

Note under flintlock : use ffffG (4fG) 5 grains down the barrel and then put in enough Pyrodex by volume to complete the volume charge in the regular black powder loading tables. (The idea is that the 5 grains of real black powder will ignite the Pyrodex).

This is for when you have lots of Pyrodex which is easy to find, but only a little bit of real black. You can grind any size real black down fine more or less like 4fG with a ceramic morar and pestle. Just make it real fine so it will easily ignite and use 5 grain on the bottom of the Pyrodex charge in the barrel.

https://web.archive.org/web/20170520031205/http://pyrodex.com/loading.html

[Geofois]

Sorry just noticed you weren't talking about the chart I posted. That's what happens when I wake up and read posts hehe. If you're out in the field and using your volume measure then yes that's what Hodgdon is referring to. Most people won't be using a digital scale on the hunt. The chart I posted says it's weight to volume so the numbers to the right of the FFG 100 column are the weights as compared to the FFG volume. Are they accurate...no. The chart is so that you use a scale to weigh what you need not to try to adjust a volume measure to an amount. It wouldn't make sense to reduce by 15% volume when it's providing you with weights already. I actually tested it for 777 2f and it's very close less than 1% off. I took a volume measure set to 100 and put 777 2f and got 72.6g weight vs the chart's 73.3g weight. I also took 100g volume of BP 2f Graf and Sons and got 103.2g weight. Maybe Goex would be closer. It's not meant to be perfect just an easy thing to refer to when using a weight scale. Technically if you reduced the volume scale by 15% from 100 to 85 then yes you should also reduce the weight by 15% but since they provided weights down to one decimal that shows you're not doing it for a volume measure but for an actual digital scale. Reducing any material by 15% volume is the same thing as reducing it 15% by weight and since the chart I posted is using weight then it's referring to 15% weight reduction but yes reducing volume and weight are the same.

That's not a bad way to try to ignite the pyrodex. I have an 1863 Springfield cap lock so I can use the pyrodex for lead balls and they work fine. It just the minies that are an issue. I think it's the fast pop of the bp that gets the skirt out vs the fake bp. I'm sure you've seen the videos showing how slow it is. It just flares vs explodes like bp.

[musketjon]

BP, Pyrodex, and 777 are measured by volume, not weight, per se.

[Geofois]

BP, Pyrodex, and 777 are measured by volume, not weight, per se.

Correct they are created to be a sorta equivalent to bp but you can choose to pre measure them however you want. If you do like me and many others making vials of powder so you can quickly shoot you simply look up the or can measure for yourself the equivalent weight and just pour away quickly. It would make no sense to keep filling up a volume measure and then pouring into the vials. Not sure if you understand the concept of the chart by weight...A given volume will have a given weight so you can easily determine that and then quickly make accurate pours...do you understand or are you thinking it's impossible to measure them by weight? Also the volume measurements for the fake BP isn't actually accurate. Do a 60g charge of BP, 777, and Pyrodex by volume and you'll feel the difference and use a chronograph and you'll see the difference. You can adjust the powder of either to get a better equivalent.