Sometimes threads seem to vanish, but I dunno why. Anyway....
I just go carefully with the case into the chamber. Never been a problem with bigger cases like you and I use. These guys with such as .32-20 probably can't do it that way. Or black powder, since it's usually pretty near full. Practice with an empty to see if you can do it without it going below level. 
As far as the powder laying down- it's never been trouble with the easy to light ones I always use- 4227, 4759, and way back a little 2400. Some others may behave differently. Ask around here about that. I never have, and never will use any wad in any load. Ben workin' for a long, long time. Good luck at the new venture.

I have shot 4198 in my .32-40 with fixed. While it worked, it wasn't the best. By the time I got enough in to produce clean, consistent burning it was more than my bullets would stand and some leading occurred. More work might have been successful, but I just went back to my other ways. Don't think I ever even thought of using it breech seated. How's it working for you?

not to keep rambling but that is why I posed the question.   Here I am getting great results only to read for the first time about "ringing the barrel" and I thought shucks I better make sure my load is not going to trash a barrel.  I probably have 300 rounds down the tube with the foam wad at the powder...???

Nice target John.  It looks like we need to make a 26 ring target for you

Thank you Sir I had that barrel a 15 twist Douglas shooting very consistently as well and sold it to a friend who wanted to play with it for awhile and he put it on his CPA. Unfortunately he was afflicted with poor health shorty after and didn't get to play with it that much and had to give up shooting all together sadly.

JLouis

At the risk of being a broken record I will try to get my attitudes on wads all in one bunch.
I use a .090” cork wad in most of my shooting. I use mostly short cases and the wad keeps the powder from getting in the action and triggers.
I have never used or tried vegetable wads so I have no opinion on them.
As to floral foam I don’t use it. I watched a friend ruin a good bench gun using the wrong floral foam and I can never remember if it is wet or dry so I just say no.
No mater what you choose for a wad material DO NOT place the wad down on the powder. Placing the wad down on the powder greatly increases the chances of ringing the chamber. I use a plug with a shoulder to place my wad between .050” and .100” off the powder then tip the case mouth down and then place the case in the chamber. This puts the powder slump facing the primer. 
Remember it is less about the wad than how you are shaping the charge when you place a wad down on to the powder. Although some materials (like Dacron) permote ringing more than others the placement is the more conducive factor.
As to a wad in the barrel I have never seen it happen in my rifles, I’m not saying it hasn’t happened I am saying I have never seen it. I will say that after thousands of rounds fired if it has happened it has never harmed a barrel.
That’s my story and I’m sticking to it.

40 Rod