My Omega has been converted to the .25ACP brass and even though I no longer use 777 due to the crud ring problems (the cooler primer fixed about 80% of the problem in my rifle). I now use only Black Mag'3 and that also took care of the fouling of the .25ACP brass which needs to be recycled. With BM3 the fouling is practically non-existent. I can just reprime the brass and go again. With other powder I had to soak the brass and keep it from getting corroded. If you are a no mess guy go with the BM3 powder if you can find it. The .25ACP conversion is much easier to handle than the 209 primers when reloading in the field with cold hands. I really like mine.