The Accurate Reloading Forums
1873 Trapdoor
1873 Trapdoor
I want to shoot this rifle it's 45/70 wonder what bullets and loads, really don't want to use black powder and I don't cast my own.
Any recommendations? For Commercial lead bullets and starting loads loads?
11 May 2016, 03:15
Bill/OregonJTEX, go to the Hodgdon reloading data center and pull up their charts for the .45-70 for Trapdoors. Lots of options there using smokeless and they list several cast bullets. You said you don't cast, but one of the best, inexpensive molds for a Trapdoor is the Lee 405-grain hollow base. When cast soft, it will very likely bump up to fit your barrel -- an issue with Trapdoors as the groove diameter can be as big as .462-.463, which makes for a mighty poor showing with a hard cast bullet sized to .459. Black powder also helps Trapdoors shoot better as it gives a "swifter kick in the ass" to the projectile, helping it fill out into the grooves.
I used to have that mold but no longer do, or I would cast you up a hundred. Surely have a pal in Texas who can cast some for you.
I do have a dozen of the big old Lyman .457125s I would be happy to send you, gratis. This is the big government bullet.
PM me if you want them.
Good luck. Shooting a Trapdoor is a sacred American experience in my book.
There is hope, even when your brain tells you there isn’t.
– John Green, author
Yep, what Bill said. Shooting trapdoors with black powder is the way to go; it is not hard to do. But, if you must use that new powder, use 28 grains of 5744 and a very soft 400 grain bullet, or a 300 grain. Do not use hard bullets; you will just lead the bore. Gas cutting.
Thank Bill. I appreciate very much it but a dozen would probably just make me want more.......
I was hoping for an idea on what/where to purchase some softies.
Well the "new" powder (that funny) does have quite a few advantages to clean up and such.....and.....I have plenty of 5744.....so.
Thanks guys.
12 May 2016, 02:41
Bill/OregonJTEX: Buffalo Arms has just what the doctor ordered, soft-cast slugs prelubed with SPG, which works with both black and smokeless. I would try the .460 405-grain hollow base at the bottom of page 3 to start with. I have been buying from Buffalo Arms for years with perfect satisfaction.
http://www.buffaloarms.com/411...r-4135.aspx?CAT=4135
There is hope, even when your brain tells you there isn’t.
– John Green, author
There are no issues with BP cleanup; use the only US Army approved black powder solvent; Water, one Gill, warm if available., That's all you need. Then oil the bore and let the brass dry.
One thing; if your bore is oversize, then smokeless powder won't bump up the bullets and you will get gas cutting and leading; black powder is the only cure for that. Use a card wad under the bullet too. Do not use a wad or filler on 5744; a friend ringed a chamber on the first shot of a new barrel on a 40 Sharps I built in the early 90s for him. I am sure you know all this.
Outstanding Bill, thanks.
Yes Sir I know the black cleaning routine.....I just hate it. I think maybe I'm lazier than you are........
.
Just ordered the bullets Bill. Gotta find some more brass as well...... Fun stuff!
For those shooting the Marlin Micro-groove rifling remember that they are accurate [despite rumours] but the hardness and bullet diameter must be carefully picked to get the accuracy. Carefully search for the best bullet or cast your own.
Love is a warm 45-70 !

I find that hollow base 405's and BP or BP substitute work extremely well. Cleanup is easier with BP than Pyrodex.
Aut vincere aut mori
14 May 2016, 19:56
elk hunterTry looking here for more information regarding getting your trapdoor to shoot.
http://castboolits.gunloads.com/quote:
Originally posted by dpcd:
There are no issues with BP cleanup; use the only US Army approved black powder solvent; Water, one Gill, warm if available., That's all you need. Then oil the bore and let the brass dry.
One thing; if your bore is oversize, then smokeless powder won't bump up the bullets and you will get gas cutting and leading; black powder is the only cure for that. Use a card wad under the bullet too. Do not use a wad or filler on 5744; a friend ringed a chamber on the first shot of a new barrel on a 40 Sharps I built in the early 90s for him. I am sure you know all this.
Got my bullets and brass.............if I where to use BP what would be a good starting load? 2F, I would guess?
.
19 May 2016, 08:52
loud-n-boomerThis is an excellent book on loading and shooting the trapdoor. "Loading cartridges for the original .45-70 Springfield rifle and carbine" by J.S Wolf and Pat Wolf. Well worth the money.
One morning I shot an elephant in my pajamas. How he got into my pajamas I'll never know. - Groucho Marx
20 May 2016, 08:16
NormanConquestI'm on the same page with bpcd. I use 5744 in mine w/ a 400G. cast.I hate the BP cleanup as well.
Never mistake motion for action.
quote:
Originally posted by loud-n-boomer:
This is an excellent book on loading and shooting the trapdoor. "Loading cartridges for the original .45-70 Springfield rifle and carbine" by J.S Wolf and Pat Wolf. Well worth the money.
That's where I got my load. I used to shoot Silhouette with those loads in the Carbine at LASC.
It was FUN!
The book is definitely worth it!
Aut vincere aut mori