WTK: Reloading 45-70 for a Vintage US Springfield Trapdoor Cadet Rifle

md66948

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Joined
Sep 29, 2012
Messages
695
Location
Phila Burbs
I am going to start reloading for my US Springfield 1884 Trapdoor Cadet Rifle. It is almost a Museum Quality Rifle.

I have been looking at videos on UT but I would like to hear actual experiences from members who reload and shoot vintagae 45-70 rifles.

My LGS sells 405 grain .459 lead flat tips its coated poly or uncoated. I think I would prefer the uncoated, strait lead with lube. I also have 250 virgin Star Line 45-70 cases and I plan to purchase a set of RCBS Cowboy Dies. I may buy a Lee Crimp Die, I do not like seating and crimping in one step.

I am looking at using Trail Boss or 4895 powders. I have heard IMR 4227 maybe a good powder.

I will be using several reloading manuals but I like to hear your opions and thoughts about reloading for a vintage USSpringfield 1884 Trapdoor.
 

Dean2

Well-Known Member
Joined
Jul 31, 2010
Messages
972
Location
Alberta
Trail Boss is a great powder for subsonic loads or lead loads in bottleneck cases but in straight walled cases like the 45-70 it is NOT a low pressure choice. You can run far lower pressures using 3031, 4895 or Varget, at the SAME velocities. My two favourite 45-70 powders for the Trapdoor guns are 3031 and Varget. (4198 is another good choice in the old guns, low pressure, good velcoity).

This is straight out of the Hodgdon online load data for trapdoor rifles. Check out how slow the trailboss load is traveling but still producing 25,000 CUP at 700 fos slower. I would not load a great old gun above 1300-1400 fps, so basically starting loads of Varget or 3031

Bullet Weight

405 GR. CAST LFP

Case

Winchester

Primer

CCI 200, Large Rifle



��
ManufacturerPowderBullet Diam.C.O.LGrs.Vel. (ft/s)PressureGrs.Vel. (ft/s)Pressure
Starting LoadMaximum Loads
HodgdonH4895 Buy Now 0.458"2.540"40.01,42414,900 CUP48.01,64518,900 CUP
HodgdonTrail Boss Buy Now 0.458"2.540"12.097124,500 CUP13.01,00725,600 CUP
HodgdonVarget Buy Now 0.458"2.540"40.01,39215,600 CUP50.01,71820,900 CUP
IMRIMR 3031 Buy Now 0.458"2.540"45.51,59717,300 CUP48.51,70621,100 CUP
 
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