I am not one who likes to quote charts, but saying the 243 has more energy than the 45-70 is flat wrong. Your factory round 45-70's are lame, because their ammo has to shoot in the Trapdoor Springfield. Using your 1000 ft. lb. rating-the 243 100 grain runs out of energy at just over 400 yards. According to the Remington catalog. Even with a heavy handload your 243 is under 1000 at 500 yards. A 405 grain 45-70 load at 2000 fps(not a max. load), has over 1000 ft lbs. at 600 yards. Where are you guys getting your information.

Truth be known the 45-70 is a far superior cartridge at distances over 400 yards, over ther 243. And please do not use the trajectory excuse. You better know your rifle and trajectory with any firearm over 400 yards. There were alot of Buffalo killed at a long distance with the 45-70. Those guys would have laughed at a 243.

When was the last time you saw a 1000 yard Vernier Caliper sight on a 243???? I have seen alot of comments over the years about a 45-70. Alot of those comments are negative. I have always wondered if those people have owned and shot the 45-70???? Tom.