Loading 45/70 with H110

[highnoon]

H110 is working so well for my 44 mags in 200 and 240 gr jacketed hollow points, I was wondering if it would also work in my 45/70. I'll be shooting 300 and 405 gr lead bullets form a Marlin 1895.

Anybody have any pet loads or advice on where to start? I tried searching the forum for past posts on this, but I'm afraid I'm not much good at the search function.

Thanks in advance.

[RobS]

Too much case volume for a position sensitive powder like H110. That's why you don't find any data for H110 in 45-70.

[highnoon]

What if I used a filler to hold it back against the primer hole?

[RobS]

What if I used a filler to hold it back against the primer hole?

Maybe but it is such a fine powder a filler would be difficult to use. There is just too many good powders out there that will do what you need and not have to try and do something that is less than desirable for a somewhat successful outcome. Look for a nice bulky powders that are not position sensitive for lower end loads and extruded powders for the mid to upper end loads so if fillers are needed it's easier to do so.

[runfiverun]

you got like 30 different powder options for the 45-70 ranging from bulls-eye through the 4064 area.
H-110 is not one of them.

[frnkeore]

H110/296 is a excellent reduce charge powder. In BR shooting, it's not position sensitive. We have used it in Schuetzen for 40+ years with excellent accuracy. I used it in one of my 32/40's at 12.5 gr, a very low density charge.

BUT, DO NOT use a wad or any other thing in the case with it!!!!!

I'll offer a starting load for a 405 gr bullet of 24/28.0 gr. It should give around ~1200/1400 fps in your rifle.

I have used it in one of my 45/70's but, not by itself, I used it as a priming charge for 4831, for a better loading density.

Frank

[Jupiter7]

H110/296 is a excellent reduce charge powder. In BR shooting, it's not position sensitive. We have used it in Schuetzen for 40+ years with excellent accuracy. I used it in one of my 32/40's at 12.5 gr, a very low density charge.

BUT, DO NOT use a wad or any other thing in the case with it!!!!!

I'll offer a starting load for a 405 gr bullet of 24/28.0 gr. It should give around ~1200/1400 fps in your rifle.

I have used it in one of my 45/70's but, not by itself, I used it as a priming charge for 4831, for a better loading density.

Frank


Maybe im wrong, but H110 is NOT to be downloaded(as recommended by manufacturer). It spikes very irregularly and may cause SEE. In my experience it likes high load density.

[725]

H-110 doesn't down load well. Just follow your manual and don't risk injury & damage. If it ain't in one of the ga-zillion manuals out there, don't do it.

[RobS]

H110/296 is a excellent reduce charge powder. In BR shooting, it's not position sensitive. We have used it in Schuetzen for 40+ years with excellent accuracy. I used it in one of my 32/40's at 12.5 gr, a very low density charge.

BUT, DO NOT use a wad or any other thing in the case with it!!!!!

I'll offer a starting load for a 405 gr bullet of 24/28.0 gr. It should give around ~1200/1400 fps in your rifle.

I have used it in one of my 45/70's but, not by itself, I used it as a priming charge for 4831, for a better loading density.

Frank

And once again to try and do something that is less than desirable for a somewhat successful outcome.

[NSB]

I load a lot of powders for the 45-70 but 110/296 isn't one of them. When 90+% tell you not to do it, and you can't find a published load anywhere, that should tell you something. Unless you're wading in the shallow end of the gene pool you'll pass on this idea. There are a LOT of choices for the 45-70, find something else. I'm sitting on nine pounds of 296 right now and have never even considered it for any large case capacity rifle cartridge.

[Maven]

highnoon, NOT H 110 as indicated above. AA #9 in small doses works well, but so do lots of other propellants, including BP and even Pyrodex R.

[osteodoc08]

296/H110 is not advisable in the 45/70 as noted above. There are other suitable pistol powders. If trying to "make something work" what else do you have on hand?

[Outpost75]

H110/296 is a excellent reduce charge powder....I have used it in one of my 45/70's but, not by itself, I used it as a priming charge for 4831, for a better loading density. Frank


ANOTHER "Hold my beer and watch THIS!" moment.....

[Shooter6br]

I have used H322 with a Ranchdog 350 g. Very accurate I believe I got 1500 fps at 43 grains (non gas checked bullet). Have used Unique, 3031, 4064.Varget,2400,. 45-70 very flexible for sub 1500fps cast non gas check. I shoot mainly loads for trapdoor even though I have a Ruger No 1 in 45-70143256

[frnkeore]

Maybe im wrong, but H110 is NOT to be downloaded(as recommended by manufacturer). It spikes very irregularly and may cause SEE. In my experience it likes high load density.

It seems that Hodgdon doesn't believe that low density loads of H110/296 are dangerous.

There is NO evidence of SEE with H110/296. There is evidence that a bullet can get stuck in a REVOLVER barrel with extremely light loads of this powder are used. It happens when the bullet crosses the cylinder gap and pressure drops to low to maintain combustion pressure. We don't have cylinder gaps in most rifles.

This powder is not primer sinitive either, I've used pistol primers with it and got ES's of as little as 6 fps.

Frank
143257

[runfiverun]

yes there are loads for H-110 in rifle cartridges, I have tried some of them and they have shot okay.

this is a 45/70 which is a big long 45 colt.
now take your 45 colt and put 16-17grs of H-110 in there..... this is what he/you would be doing with the 45-70.
it's the one thing they/we all advise against.

[frnkeore]

Hang on guys, I just went back and looked at my chronograph book and I have used 296, by itself. Note the SD and the ES that I got. A very good indicater of good combustion w/o any pressure signs.

Frank
143258

[frnkeore]

I do not advise anyone using this data, unless they are fimilar with duplex loading and I have notes added that make this data confusing.

This was my MOST accurate 45/70 load but, the recoil was to much for me to use, long term in match shooting.

Again, note the ES and SD.

Frank
143264

[Larry Gibson]

frnkeore

I notice the "x" in "Breach Seat"; does that man the bullets were breach seated?

Larry Gibson

[frnkeore]

My loads posted above are breech seated loads. That will make them comprable to a 45/90, a even larger case and a lower load density as well as pressure. The load of 17.5 gr would give a QL pressure of 7,553 psi in my BSed application, with the bullet seated .050 ahead of the case and 9512 psi, if shot fixed with a jacketed bullet of 405 gr and a COAL of 2.55.

With the same fixed load as above QL gives:

24.0 gr, 14,871 psi, 1322 fps

28.0 gr, 19,243 psi, 1493 fps

Marlins are rated well above the SAAMI 28,000 pressure limit of the Trapdoor.

Frank

[TCLouis]

Look at 45-70 pistol loads in Hornady Manual.

I will not quote them only point them out and they don't to to 405 gr. if I remember correctly!

If ya have it, 10.5 grains of Unique will likely deliver the 300 grainer at about 1100 fps and very accurately in what used the load in (1886).

[highnoon]

Looks like a bad idea, so I will pass on it. Thanks to all for your input.

Since my original post, I have been able to acquire some H4198. I will be giving this a try as per the loading manuals.

[Larry Gibson]

highnoon

H4198 works very well in many 45-70 with cast bullet applications. I think you will be happy with it. With lighter loads using 405 or lighter weight bullets you might consider a Dacron filler for better ignition, burn uniformity and accuracy.

Larry Gibson

[utahtrapper]

That is another great powder along with RL 7, and H322
Enjoy