Resurrecting here - Ive got a .190 freebore and a bunch of 195s staring at me. I also have RL33, but have had high pressure starting at 82g. I've cleaned the barrel well after being told that RL33 leaves a lot of carbon behind, but I think I'm ready to give up on it and try something else.
Anyone with .190 freebore running the 195s successfully? VV570? Retumbo? Please share charge and velocity. I'm using Gunwerks 1x shot brass in a 28" barrel on a Desert Tech SRS A2 and will start low to find my own charge that fits.
Now seems to be a tough time to be trying to find magnum powder, but it's even more frustrating to load up ladders in this cartridge and fail to find a load that's consistent and safe.