Sorry, I mis read 
. I must be tired.I really do appreciate you guys helping me .I asked the same question on the trad.muzzleloading forum on the gun builders bench and only got one reply.And he was more worried about the thin wrist of my rifle.
  dont confuse  the traditional muzzleloading forum "claudes place " just a forum .
with the traditional muzzle loading association forum  which   is  part of an association for the  support and shooting of traditional muzzleloaders of a pre 1900 design  .
 there are allot of very qualified builders  that post on the TMA forum from all around the world .
 post your question there  and i  know you will get  alot of answers  as well .
Another good spot would be the American long rifle association .
 Fi you look into this subject long enough I think you will find that  really this issue  with the drum bolster   is much the same as that of the flint liner . Some folks have some very strong feelings about both , their  reasoning very logical .  However  when one considers the  design , how long its been around  you find failures are very small to not existent   when dealing with rifles that have been properly built and maintained