How important is it to clean it out???? Also I have a primer hole deburing tool... Do you just use it inside the brass or do you use it inside and out??? Also how important is it to use it(will it make a difference in accuracy)

It's important to clean the primer pocket to make sure your primers are seated to the right depth.You debur the inside of the case and only have to do this once.As far as accuracy that is debatabe but it does help in uniform powder ignition.

I uniform the flash hole and primer pockets in all new brass or at least all brass that is new to me. That way I know all my brass are equal on that account.

Cleaning the pockets is important, at least to some extent. If you have too much build up in them it may keep you from seating the new primer fully. This could lead toproblems from poor ignition to the dreaded "Slam-fire" in a semi-auto rifle that has a floating firing pin. You don't have to get anal about it, but getting most of the crud out of the pocket is definitely to your advantage.

I’ve just started deburring the flash holes this year on all my new brass. I’ve read that it doesn’t do much on accuracy for hunting bullets but I can’t see it hurting either. At least all the flash hole are the same and any little bit will help.

Thanks for the info

Don't do like alot of people and put that primer pocket wire cleaner in a drill chuck and drill it. You can ruin you brass and primers be seated way too deep. You can run you fingers over the primer and feel if its too deep. Should be almost flush with the bottom of the case. Just a quick wisk back and forth should do the job.

One word of caution from the chapter of "bad experiences" . . . . when you ream flash holes, expect pressures to go up a little. If they are already right at red-line, something bad could happen.

I uniform all primer pockets with the Sinclair uniforming tool. I've also found that this same tool does the best job of cleaning the primer pockets. It's alsothe easiest way I've found to do this job.Primer pockets get cleanedbefore every reloading.

As far as flash hole deburring is concerned, well, I continue to perform this on all new brass I buy. It may or may not help in the accuracy department with my hunting rifles, but it's a one time operation and since I don't go through all that much brass in a year's time, it's not a bother.This is donethrough the neck of the case, not through the primer pocket. For this I again use a Sinclair Int'l tool.