I have a .450 Bushmaster in a Ruger American..that I bought on a whim, as I passed by the gun area in a local Walmart.
   It has plenty of power for anything in North America...but the shoulder and the ears pay the price!
  At 86, I can take the recoil, but part of that recoil is mitigated by a blast deflector, which makes the blast 
  uncomfortable in more than one way. 
   So I figure, why suffer all of this, when a less uncomfortable round will easily do the job?
  I was looking for another big game rifle, when  fell for that .450 bushmaster, I probably should have taken the
   Marlin 336, that was sitting in the rack beside it !