Saboted 00 buck traveling 1400-1500 fps. Sabot is non-discarding.
They are stable to at least 100 feet at this velocity, I will test at farther ranges next time I go out to the farm. I hit a 4" group at about 90 feet with iron sights (I'm not very good), but I'm sure that I can do much better. These will have a wack BC, so I'm not too sure their effective range.
These are a new 43R (printed caliber) load meant for accuracy. Not too bad for home made cartridges fired out of an unchambered piece of pipe.
I have a new set of 43R loads that i've been working on. I will release these "bonus rounds" when I see more 43R builds come to life.
You need to print the ammo better if you are shearing the rims.
Make sure that you are using a quality pla+, that has been dried. Print hot and very slow. I recommend the bed being at 70C.
You will never shear a rim with the firing pin strike if you print the ammo well with quality material.