"I am a little off-subject, but is that Penn. Hunter the older model with a octagonal to round barrel?"
Hi Kees...I don't think that is one bit off subject!
Anyway, Yes. It is the older, 31", Octagon to Round, 1:66 Twist. Percussion. In all honesty it is the sweetest "handler" of all the rifles I own. The balance seems just right for this old, now overweight body. I don't know the actual weight, but I would guess it to be right at 6.5 lb. It is indeed a pure joy to carry in regard to weight & balance.
And, recoil is not that bad with moderate loads. Hunting loads can be quite different, but we all know where that cut off point is.
On the subject of recoil...The hardest recoiling gun I own is the Hawken in .54 cal. Shooting the 485gr OS Minie, with a 1:48 twist, in front of 90-100gr Goex FFg, you know very well when you touch one off. The weight of that gun is about 7.5 lb.
My .58 cal is a 1861 Colt "Special" that weighs in at a bit over 10 lb. It has a 40" barrel, and a 1:72 twist. This thing is a real "pussy cat" with round ball and 55gr. Goex FFFg. However, when I shoot the heavy Minie Ball at 525gr, behind 80-90gr of Goex FFg, it gets down right ugly from the bench. Neither of these two guns has the balance / feel of the little Penn.Hunter.
Back in the 1960"s -70's, I had a little T/C Seneca in .45 cal. I don't know,or ever probably ever knew, what the twist rate was. I shot patched round ball in that thing, and I killed a lot of Deer. I had the highest level of confidence in that little gun! That was, of course, before I got real interested in Muzzle Loaders and started reading all the "hype" about how a .45 cal round ball is not enough "medicine" to succesfully take Deer.
So, I traded the gun off for something "bigger & better", and for several years I regretted that mistake. It may be said that the trade was possibly one of the worst "deals" ever for this old boy. I would sure like to get my hands on another one that shot that well.
IMHO there is a bit more to a muzzle loader than just raw down range energy. That energy ain't worth a hoot, if it's expended in the ground or on a tree.
Respectfully, Russ