Hello everyone. It has been about 7 years since I posted anything.
I got a .600 round ball mold a couple of years ago and finally cast a bunch of them.
Here is my recipe:
-Remington gun club hull
-CCI primer
-Ballistic Products 12 ga. Flex seal wad FS12
-6 water dropped 00 buck pellets from the Lee mold
-1 water dropped .600 round ball
-27 gr. Longshot
-nitro card NC12L from ballistic products
The lead weighs 1.4 oz. so I used load data from 1.5oz loads. I tried up to 30gr. , it was way too spicy. No idea on pressure. I do not recommend going beyond 28 gr.
After adding powder and wad, put the buckshot in, set the ball right on top of the buckshot. Put the nitro card on top of the ball, and cram it down with the press. The nitro card acts as a patch for the undersized ball.
It shoots pretty tight groups, because the buckshot drafts the ball for a fair distance before spreading. At 40 yards I was getting about 24" of spread. The ball was consistently in the middle of the pattern.
Recoil is within reason.
pretty fun for plinking around, and will kill anything big enough to die.