Roger, you and Don Getz are anomalies - HA! Just kidding. More power to you.
I'm a very young 58 and get tickled every time I build or come into possession of a 'new-to-me' rifle or pelter. Just goes with the territory.
I lament selling my .58 Hawken - with that curved butt was not very pleasant to shoot - much rather shoot my .458. Perhaps all the work & testing I did with it and the 'altered' Minnie's had something to do with that too. 140gr. and a 500gr. to 580gr. almost solid based Minnie's used to whack pretty good. It had a GRRW barrel on it and demanded to be fed large charges to shoot well. 140gr. was the accuracy load with RB as well. That seemed to be the load I always had in her when moose hunting and walked into a flock of grouse - low hits were rather interesting - suspect they were low - bits and pieces all over. Shoot for the head, the head, stupid.
I work up a load that is the most accurate for the rifle - then use that load at all ranges. What shoots best at 50 to 100 yards, also shoots tiny bug holes at 25 yards. Sure, a weak close range 'target-type' load sometimes shoots well close in - afterall a good load in a smoothbore will cut a small hole for 5 shots at 25 yards, so a rifle should as well. The problem becomes that you cannot test loads for accuracy at 25 yards, stopping when you find one that cuts shoots an inch, then expect that load to shoot well at longer ranges, unless that load is a healthy one.
It takes powder to shoot well at long range. I know guys who can shoot to the capability of the rifle, Taylor is one, and can hit steel 'trail' targets every time - out to 75 yards, even more, with a light load in his .60 Jaeger or .50 Virginia. But - put it on paper and it's not so hot - he's able to hit because his offhand groups match the best the rifle will do off the bench and the ten ring on a big steel plate is large. He's a tremendous offhand shot - says he's poor off the bench. It's because his loads are not the best loads for the rifle, just a load he decided to use. Off the bench or prone off a chunk, it's disheartening to say the least.
Fringe hits score on a steel target, but - on a deer or moose, that fringe hit could run to the big bone of the leg, deflect and wound, not kill, or behind the diaphragm - same bad result. A more accurate load will put the ball where the sights indicate - in the 'lights'. With 120gr. to 140gr., recoil in a light rifle rifle would not be pleasant, but it will be very accurate with it. Afterall, it's a hunting rifle and should be loaded like one.