Wads are not required with conical bullets, BUT, I have found that using a Wonderwad under a full-bore sized conical like a Maxiball or Buffalo Bullet, particularly when using heavy charges, tends to make my rifles shoot more accurately and keeps the bore a little bit cleaner. However, with 777, using a Wonderwad has made a great deal of difference, even when shooting round balls, in preserving the patch and making the guns shoot almost the same as when using other powders. With 777, omitting the wad has had dire consequences!!

Keep yore powder dry!!