This thread, like most on 45/70 has been up and down, across the board in opinions, beliefs, judgements, and notions..... some educated, some not so much.........
Lets see if we can come to some reasonable and agreeable conclusions..........
To start, we have to go back to the very beginning and the exact question asked..............
45/70 For Dangerous Game?
This could cover a lot of area, and "Dangerous Game" has to be defined............. We normally consider, in Africa, Dangerous Game being perhaps these, leopard, lion, buffalo, hippo, rhino, elephant maybe crocodile.... this about covers it? Probably so........
However, back in 2000 I was literally charged by an insane Blesbok. Yes, I swear it. My soon to be wife and I were out on one of the Farms in South Africa, we were in the process of attempting a stalk on a nice Warthog. Now we are in wide open area, no trees nothing but grass, and occasionally a small tiny bush to hide behind, nothing more............ So there is this herd of Blesbok at least 200+ yards off to the left. This big warthog was way down to the right, 150+ yards out still. Well, now 150 yards was not that far, but guess what I had in hand....... A Marlin Guide Gun in 45/70. I am trying to recall right now, but I believe I was shooting a standard old 405 Remington at 1800-1850 fps. So we were hands and knees making our way to the warthog, when all the sudden this insane Blesbok made a straight line charge to the warthog, he ran for the entire distance and ran the warthog off........... Then he stood there, looking around for something else to tangle with, and spotted us!!!!! And here he came, he was not running full out, but he was getting along at a good pace, and he kept coming straight for us, did not deviate an inch one way or the other........ I look at my gal, look at the guy we are hunting with from the Farm, and we are just bewildered at this point....... WTF is this about? I get up on one knee and get the rifle up, and he has to see me plain out now, and here he comes.......... When he gets to about 10 steps out, and makes no effort to stop, turn or veer off course I turn a 405 Remington loose straight into frontal chest area, and of course that puts an end to the ordeal. We are just taken completely aback by this behavior. Maybe he wanted to Mate? I don't know, but I was not much into that idea if that is what he had in mind.................. HEH.........
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So, was the Blesbok dangerous game? He was that day, and the 45/70 did a jam up job on him. HEH..........But I would consider this the "Exception" and certainly not the rule.
45/70 For Dangerous Game?
And now the qualifying statement;
"My sad and I where discussing DG rifles the other day. He has a newer model marlin lever action in 45-70. Could you make up a dangerous game load for it?"
I am sure he meant his "Dad", typo........ and now we have qualified it to the Marlin Lever Gun, which is an important point.
I think I mentioned this in an earlier post on this thread, but it has been so long and up and down I forget.... but in 2002 I used a Marlin 45/70 Lever gun for buffalo, and at that time, with the bullets available in those days, I really think I was way under gunned for that mission. No, I did not go on that trip with a Marlin in 45/70 to shoot buffalo, that was not the mission, the mission was elephant and that was with a 458 Lott.......... But the PH at the time was so taken with the little guide gun, he wanted to shoot a buffalo with it, I just did the trigger work. Shooting a 420 gr Cast Performance at or around 1850 fps, was just not a suitable bullet for buffalo, especially when heavy bone was contacted. It all turned out well in the end, I solved the issue myself, no help required, but I did not have a decent bullet for that mission. So at that time, the Marlin 45/70 was not suitable for Buffalo, no doubt about it, but it was a lack of really good bullets in 2002.
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45/70 and Marlin Lever gun is limited a lot by the platform, and limited pressure. Shooters truly in the know, realize that this platform should not exceed 45000 PSI. I read a lot of guys out there pushing what I know is way beyond that, and I can tell you for a fact, not all lever guns are created equal, some will indeed allow you to shoot heavier loads, and that same load most likely will lock up the next gun tight making it not usable, do not try to repeat the BS you read about, it most likely will do damage to your gun, Marlins operate across the board at 45000 PSI and les..... Winchester 1886s will run a little hotter but would keep them at 50000 PSI. I keep my M71s in 50 B&M Alaskan at 50000 PSI and the Marlins in 50 B&M AK at 45000 PSI as well.
Other platforms, such as a Ruger #1 you can really get a 45/70 going, not quite 458 Winchester, but not too far under that. You can use todays modern bullets and take full advantage of 45/70 case in a Ruger #1. But Dangerous Game Rifle/Cartridge? You got one shot, while experienced shooters can indeed make one work in that capacity, its not for the common hunter to take on. I am a shooter, but I am not good enough with a single shot to personally declare that myself. Although I dearly love a Ruger #1 in bigger calibers and have several.
As Americans, we grew up with the Lever Guns, it is part of our heritage and our history. Many of us have a great affection for lever guns, I do myself. In my development of the B&M Cartridges, there was no way I was not going to have a .500 caliber lever gun. My 50 B&M Alaskan lever guns are a big step above 45/70 simply because of caliber, and of course I incorporated the very best of Bullet Tech from CEB and North Fork. They are big hammers. And in addition, lever guns are fast. But, still with a traditional lever gun, you have those pressure limitations to deal with. Because of this, you just cannot make a lever gun do what a bolt gun can do.
Hunters/Shooters have taken all the Dangerous Game in Africa with a Handgun in years gone by, successfully at that. No normal Handgun, lets say revolver, can really exceed what a 45/70 can do, if you use Bullet Tech that is available. Now yes, there are those big break open POS Contender things chambered in all sorts of cartridges and called handguns, but to me that is not a handgun in the traditional sense. The handgun shooters that take to the field are serious shooters, and well practiced, and it is not their first Rodeo. And, fact is, the handgun hunters were decades ahead of us ignorant ass rifle shooters in bullet tech, they had to be, they had to take advantage of their situation, and did it with bullet tech.... How? Handgun shooters were the first to recognize those big flat nose meplats so commonly used for the last 25+ years. It took our dumb ass a long time to catch on to these advantages with our new modern day Flat Nose Solids.... but finally we got there, thank you Handgun Shooters.
Point being, 45/70 in a lever gun can be enhanced by using and taking advantage of modern day bullet tech. For me, I would now only use CEB Or equal SOLIDS of Brass or Copper, for any Dangerous Game Mission that one might embark upon with a 45/70 Lever gun. Penetration is everything, and a big flat nose solid hits hard enough, and penetrates deep enough to do the job. Now you need to be a shooter, and you need to know your limitations, take your shot carefully and calculated and don't stop shooting until the problem is solved.
Is 45/70 and Marlin Lever guns good enough across the board to consider as a Dangerous Game Rifle/Cartridge? No, not for common hunters and inexperienced shooters. But in a shooters hands, bullet tech enhanced loads, and careful planning you can accomplish the mission without coming up short. Stopping rifle/cartridge? No........ So you better shoot straight, use the correct bullets for the mission at hand............
I was very successful with my lever gun in .500 caliber. But after that hunt, or shoot, I decided that because of the limitations of the lever gun and pressures, I would never go to the field again with anything but big flat nose solids, brass or copper with a lever gun for buffalo or what have you. I was shooting a 405 Lever Solid in .500 caliber at 2125 fps, and getting around 5 ft of penetration in buffalo and hippo, and it knocked the crap out of them when it hit.......good stuff.
In 45/70 I would favor the 400 CEB Lever Solids at 1850 fps, about all you can get and stay under 45000 PSI...... I had a guy once use that for buffalo with success.
I don't know, do we know anymore than we did?