This was not very scientific because I was out hunting. Also, I put powder and corn meal in a pre-loaded tube. I was using 7/8 ounce scoop of powder but 1 1/4 ounce scoop of corn meal. This was in a 12 gauge. Poured it in slow to be sure the powder got down first. Then used a shot measure with 7/8 ounce of shot. First, every shot went off just fine, but a few had a lower recoil and somewhat different report. Second, the birds that I was on fell dead just like any other load. I shot two patterns at 25 yards and they were round and even. However, they looked no different than a load with powder, cards, shot, card. Two things noteworthy - 1) there is a funny smell right after you shoot, and 2) there is a visible white coating in the barrel. Everything came out clean and easy using my normal procedure. Conclusion - I'm not switching to this method exclusively. It'll work if I don't have cards or if I am shooting repeatedly, like doves, driven birds. It is a bit faster to load this way.