Thanks for the replies. I did a stupid thing the other day. I was loading 45-70 with IMR 4198. When I got done I had screwed up a couple of rounds so I pulled the bullet and poured the powder back into the can. The I remembered I had another few damaged rounds so I pulled the bullet on one and poured the power into the can. I have used IMR 4198 for a long time and while pulling the bullet on the second round I suddenly remembered once upon a time I used to use IMR 4064. So I'm thinking I dumped about 50~55 grains of 4064 into about 1/2 lb of 4198. It looked the same - thus my question about are they all extruded. Guess I better dump the can.