So far, yours is the first post I've seen by someone using the 200 with less
than desirable results (may be more, but this is the only one I've seen).
Seems that most are connecting, and the deer go less than 20 yards. My
8-pointer just went a couple of feet - straight down. In these cases, there
isn't much need of a blood trail.
Sometimes a 250 SST/SW will do much the same that the 200 did in your
case. Sometimes the 300 SST/SW will just punch a hole through the
chest cavity on a broadside shot, but it more than likely would have
passed through the buck ya got, with PLENTY of blood trail.
If you want to be pretty darned certain that you will have a blood trail,
PR Dead Center .40/50 240gr bullets should shoot well in your Encore. I've
had good luck with QT .40/50 235gr bullets with broadside shots, but it
wouldn't pass through on a type of shot you took with the buck. My Encore
has taken a few deer with the PR DC .40/50 200gr bullets, but weren't
accurate enough to reliably hit the kill zone beyond 100 yards. Even with
these, all but one were pass-throughs, and that one was shot the length
wise into the body (dead deer, though).
There are no doubt others out there, that's just my experience other
than using light XTP's (180 & 200gr -- no pass-throughs, but killed the
deer in short order).
So far, I'm very happy with the 200SW and went with it because the
PR bullets wouldn't stand up to the speeds out of my new Savage.