Thanks zbenga, that is epic.
Very interesting what you say about Hornady projectiles -- I'd assumed they were the most accurate but in your experience, and for that caliber and rifle, obviously not.
I always use Hornady XTP but now I might start trying other makes.
I always shoot with open sights, and so can't expect the sort of accuracy you are getting with your scoped 45-70, but apart from changing my type of sights I like to do everything else I can to improve my group sizes.
I'm going to try .357 loads with 180 grain projectiles. I've heard in some rifles they are very accurate.
Anyway, well done! Very impressive shooting with a lever action!
I wonder why, out of all the straight-walled lever action rounds, it is the 45-70 that consistently seems to shoot so accurately at 100m (or, at least, it's the only one you ever hear about).
There is just one video I've managed to find, on all of youtube, that shows the .357 magnum being fired with almost-as-good accuracy as what I've heard the 45-70 can do, at 100 yards.
Here it is: https://www.youtube.com/watch?v=UiC32voJd4s
His best 5-shot group is 1.5" at 100 yards, using 140 grain Hornady XTPs. He uses a scope on a Henry .357 lever action. I haven't seen any better groups for .357 magnum out of a rifle.
My best 5-shot group so far with a .357 mag lever action at 100m is 2.9". This was with Hornady XTP 140 grain. Open sights, simple forend rest. I want to try and get it down to around 2.5" average (or, at least sub-3"). Pretty sure it's possible with a lot of practice and experimentation with loads etc.