What type of load will the 45-70 bfr handle? Regular factory ammo loaded fairly tame, or loads meant for the marlin lever guns like buffalo bore?

That gun can take all you can give it, I'd expect you will say when long before it does. One member has a custom BFR chambered in 50 Alaskan.

Good to know thanks!

Yeah what s4s4u said. You'll have had enough long before it does.

I have BFRs in both 45/70 Govt.(old model) and 480 Ruger. They are tough revolvers.

That is good to know. I like the availability and variety of the factory ammo and I have lots of brass already. Perhaps it is one I will consider after tax season. Any ideas about what velocities to reasonably expect from the 7.5" barrel with various bullet weights?

My BFR initially had an 7.5" barrel. I bought the gun at a fundraiser in Magnaport Stalker configuration with a 7.5" barrel. It was not my favorite mainly because the gun looked and felt unbalanced with such a short barrel. It developed a crack in the forcing cone, so I sent it back to MRI to have the barrel replaced with the 10" version. I thought that 10" was too long, and it had a cumbersome feel to it. I liked the 8 3/8 barrel length on my S & W Model 29/629 and Taurus Raging Bull revolvers so I sent it the BFR to Magnaport to have the barrel shortened to that length. I think that is the best combination of handling and performance for the 45/70 cartridge, and I strongly recommend that you try the 7.5" barrel length before you buy one.