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Anybody Got Any Trapdoor Loads To Share? (Read 196 times)
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Anybody Got Any Trapdoor Loads To Share?
Sep 11th, 2017 at 11:35pm
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I ordered a set of 45-70 dies today.  Can't wait to shoot my new (to me) model 1873.  Never shot cast bullets but it looks like a candidate.  Lyman book has several loads but they list a wide range of powders.
  
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Re: Anybody Got Any Trapdoor Loads To Share?
Reply #1 - Sep 12th, 2017 at 4:41am
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What kind of load? Probably not this one, eh?
  
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Re: Anybody Got Any Trapdoor Loads To Share?
Reply #2 - Sep 12th, 2017 at 12:05pm
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That one looks darn good.  I'd like a load good for 100yards, the lighter the better.  I've not fired a trapdoor in a LONG time but I don't remember the recoil being very bad.  That's an interesting bullet.  I've never molded any bullets, lots of crappie jigs though.  I'd like to start out with a commercially available bullet.
  
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Re: Anybody Got Any Trapdoor Loads To Share?
Reply #3 - Sep 12th, 2017 at 5:37pm
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Looks like Western Bullet has these
  
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Re: Anybody Got Any Trapdoor Loads To Share?
Reply #4 - Sep 13th, 2017 at 2:46pm
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Parashooter, I ordered some of these from Western bullet.  I've never loaded cast bullets and internet searches yield conflicting information.  Would you mind providing a little wisdom?  Do you flare the case mouths like pistol rounds?  Do you crimp?  The bullets I ordered are prelubed with lube filling up the middle "cavity".  Thanks, David
  
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Re: Anybody Got Any Trapdoor Loads To Share?
Reply #5 - Sep 13th, 2017 at 3:31pm
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bote wrote on Sep 13th, 2017 at 2:46pm:
[1]Do you flare the case mouths like pistol rounds?  [2]Do you crimp?. . .

1. Yes.
2. Only enough to remove the flare.

I hope you realize that 457130 is a very specialized bullet designed for short range "gallery" use and that extreme low-density loads of fast, dense powder like 700X require great caution to avoid double charging. A novice would do better with more conventional bullets and a bulky powder like 4759 that makes a double charge much more obvious on visual inspection before seating.

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« Last Edit: Sep 14th, 2017 at 5:01am by Parashooter »  
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Re: Anybody Got Any Trapdoor Loads To Share?
Reply #6 - Sep 13th, 2017 at 6:48pm
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I am a HUGE fan of Lyman's M-Dies. I haven't collected the whole set...yet....but have them in most of the calibers for which I use cast projectiles. Still possible to over flare but, set up properly, leaves a nice 'cup' in which to place the bullet and seats without shaving any lead. I can't give a strong enough recommendation.
  
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Re: Anybody Got Any Trapdoor Loads To Share?
Reply #7 - Sep 14th, 2017 at 2:47am
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I like the M dies as well.  I use them as mandrels for rounds that bushing dies are not available.  Looks like Brownells doesn't have them in 45-70. 

I don't have it with me but I think my Lyman manual has several loads for the little bullets with powders I already have.  I also ordered some 405s.

  
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Re: Anybody Got Any Trapdoor Loads To Share?
Reply #8 - Sep 20th, 2017 at 11:32pm
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Bote,

I've been playing with trapdoor loads for about a year now. Two things I've figured out:

1. A flat based 405 grain bullet does not seem to work well in these rifles. You need a cupped base 405 or flat based 500 grain in a 20-1 alloy. Both these can be purchased, pre-lubed in SPG BP lube, from Buffalo Arms. These are what you want.

2. The 45-70 round was one of THE most tested rounds prior to introduction into the services. There is a book called "Loading Cartridges for the Original 45-70 Springfield Rifle and Carbine" that provides a lot of info on how to replicate the original load and pointers that will make your rifle pretty accurate. I would get this book and read it, it helped me a lot.

Bottom line, for me anyway, I couldn't hit the broad side of a barn with the cheap 405 gr hard cast Bullets and smokeless powder. I read this book using the suggested techniques and now shoot 2-3 in groups with 65 grs of FFg BP, .060 fiber was and the flat based 500 gr bullet from Buffalo Arms with a heavy crimp.

Stretch
  
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