I was reading in an old handloaders digest about the 30-40 krag round being one of the if not the first govt. Round to use gas checks. I went on to talk about the rounds use in long range target competition. Here is where it got interesting. It said competitors used plain based bullets with cream of wheat between the powder and bullet because they did not have copper gas checks. This kept the bullet base from being damaged upon firing. I knew cream of wheat was used for fire forming but never heard of it used as an organic gas check!  The article said the round was accurate at 600 yards. Anyone ever here of this?