BeardedGunsmith
40 Cal
Everyone here is likely already aware of my 3d printed caps but I figured I'd show how I go about making my compound for them, which is the FH42 compound. I start with potassium chlorate, sulfur and antimony trisulfide.
Then I use a scale that has very fine measurement and also measures in pretty much all different units but I use grains.
I start by measuring out 47 grains of the chlorate, 30 grains of the antimony and 21 grains of the sulfur and dump them together in a little glass dish.
Now this is where I differ a bit from everybody else because this is actually quite a bit of compound but I add isopropyl alcohol to it until it is all just wetted. Now that's it all soaked it can be mixed together quite judiciously as it's inert in this wet state. This is also when I add about 6 drops of Duco cement. When I get a uniform gray slurry it's ready to transfer to the caps.
I use a toothpick to grab a round glob and drop it into a cup, and repeat until I have a bunch filled.
They look full when the compound is still wet but they will dry to where they can be tamped down with a tool that i made.. it's dual sided for 10's and 11's.
Using this method is fast and easy and can supply yourself with all that you can shoot. They also don't require anything to retain them as the wet mix with the glue forms a solid puck inside the cap. And if anyone isn't doing this yet, you're shorting yourself on a pretty easy task, and it's fun too!
![20240307_213746.jpg 20240307_213746.jpg](https://cdn2.imagearchive.com/muzzleloadingforum/data/attach/301/301984-20240307-213746.jpg)
Then I use a scale that has very fine measurement and also measures in pretty much all different units but I use grains.
![20240307_213807.jpg 20240307_213807.jpg](https://cdn2.imagearchive.com/muzzleloadingforum/data/attach/301/301985-20240307-213807.jpg)
I start by measuring out 47 grains of the chlorate, 30 grains of the antimony and 21 grains of the sulfur and dump them together in a little glass dish.
Now this is where I differ a bit from everybody else because this is actually quite a bit of compound but I add isopropyl alcohol to it until it is all just wetted. Now that's it all soaked it can be mixed together quite judiciously as it's inert in this wet state. This is also when I add about 6 drops of Duco cement. When I get a uniform gray slurry it's ready to transfer to the caps.
![20240307_213818.jpg 20240307_213818.jpg](https://cdn2.imagearchive.com/muzzleloadingforum/data/attach/301/301986-20240307-213818.jpg)
I use a toothpick to grab a round glob and drop it into a cup, and repeat until I have a bunch filled.
![20240307_213825.jpg 20240307_213825.jpg](https://cdn2.imagearchive.com/muzzleloadingforum/data/attach/301/301987-20240307-213825.jpg)
They look full when the compound is still wet but they will dry to where they can be tamped down with a tool that i made.. it's dual sided for 10's and 11's.
![20240306_210225.jpg 20240306_210225.jpg](https://cdn2.imagearchive.com/muzzleloadingforum/data/attach/301/301988-20240306-210225.jpg)
Using this method is fast and easy and can supply yourself with all that you can shoot. They also don't require anything to retain them as the wet mix with the glue forms a solid puck inside the cap. And if anyone isn't doing this yet, you're shorting yourself on a pretty easy task, and it's fun too!