Thought I'd see if anyone has had this same problem. I'm using a new Dillon 550B with their powder measure. With IMR 4895 and RL19 powders - both larger extruded powders - loading .270 and .30-06, I'm getting a lot of powder spillage and inconsistent loads. (up to 3-4% high to low) I've talked to Dillon 3 times and tried everything they suggested which ran from proper set up to static electricity. The last guy said it was because of the large powder. That the amount I was loading (52.4 grs.) was at the limit of the large powder bar and some of the powder was hanging up and eventually bridging. This makes sense as fine powders have no problem. His suggestion was, of course, to buy something else - the Magnum powder bar. Frankly I don't mind doing that if it will cure the problem but it would have been good to have been forewarned. Has anybody else had this problem?