New member here,
I bought a 45-70 handi rifle yesterday its a camo sythetic blued barrel and a leupold 3-9x40 vari x 2, I have found a lot of useful info on this forum and I am looking to learn more. Are there any tips or tricks I need to know about this rifle.

Nice snag, congrats!! The 45-70 Handi is one of the most popular and accurate of H&R centerfire rifles! The synthetic camo stock is no longer made, Remington dumped it, but it's one of the few syn H&R stocks I own, I have one on a 243 Superlight, please check your private messages, I sent you some info.

thanks for the info

got it sighted in today and it shoots sweet several clover leaf groups using the hornady LE after about 10 shots it starts getting a little brutal on the recoil. do they sell low power factory loads?

I have a two, the standard and the buffalo hunter. For factory loads, try the Remington or Winchester 405 gr. soft point loads. They are loaded to very low presure since people shoot them in original Trapdoor Springfields. I think the velocity is somewhere in the 1200-1300 fps. area. I find them very easy to shoot.
If you reload, get a Lyman Cast Bullet Handbook reloading manual and look at some of the loads listed in there for the Trapdoor Springfield. You can shoot them all day and not really feel it. Great buy and a fun caliber to play with.

I went through a stress analysis of my 45/70 handi rifle and calculated it can take way more than the brass.

I validated the calculations with a load work up.

At 405 gr cast and 32 gr Unique, the case walls starts to separate from the web and the case web flows into the extractor. 88kpsi per Quickload.

I then shot one trapdoor load with the butt to my shoulder and it kicked me into next week.

I now do a very wimpy 30 gr IMR4895 and 405 gr, and it kicks like a 30-06 and has a trajectory like a rainbow.

What does it all mean?
The handi rifle can take more than the brass.
I doubt your shoulder can take half that.

Ream that baby to 45-120 for high pressure loads!