RepackboxRotoMetals2WidenersLoad Data
Reloading EverythingTitan ReloadingInline FabricationLee Precision
MidSouth Shooters Supply
Results 1 to 8 of 8

Thread: 1884 trapdoor Lyman 457124 (385 gr.) 15 grains unique.

  1. #1
    Boolit Master smkummer's Avatar
    Join Date
    Aug 2007
    Location
    So. Indiana
    Posts
    1,861

    1884 trapdoor Lyman 457124 (385 gr.) 15 grains unique.

    This was posted as a max load in Lyman’s 45 manual. We have fired a few of these in my buddies original 1884 trapdoor Springfield and my H&R repro officers model. No I’ll effects but modern manuals don’t go that high. I see that even the 42nd edition used 14 grains. Current Alliant data lists 11 grains.

    Any others doing this? I can certainly download. Unique is certainly economical in these times.

  2. #2
    Boolit Master
    Bent Ramrod's Avatar
    Join Date
    Apr 2005
    Location
    Southern Arizona
    Posts
    4,284
    I used to load 13 gr Unique under the 457124 in my .45-70 Garrett Sharps carbine. Very mild but accurate to at least 200 yards and that boolit landed with authority.

  3. #3
    Boolit Master smkummer's Avatar
    Join Date
    Aug 2007
    Location
    So. Indiana
    Posts
    1,861
    Bump. Anyone shooting old trapdoors with this load?

  4. #4
    Boolit Master marlinman93's Avatar
    Join Date
    Mar 2009
    Location
    Oregon
    Posts
    2,730
    No, but my old Ideal #39 shows 15.0 grs. of Unique with a 405 cast lead to be 1545 fps. I personally think the 14.0 gr. with a 385 is a bit hotter than I'd use in a Trapdoor, or Rolling Block of older manufacture. I'd be more comfortable dropping it down maybe 1.0 gr.

  5. #5
    Boolit Master

    pworley1's Avatar
    Join Date
    Dec 2013
    Location
    Mississippi
    Posts
    3,253
    I try to stay in the light to medium loads with the trapdoors. If I want to shoot hot loads, I use a modern rifle made for the higher pressures. The trapdoors could most likely take the pressure, but why push them if just punching paper.
    NRA Benefactor Member NRA Golden Eagle

  6. #6
    Boolit Master

    Kraschenbirn's Avatar
    Join Date
    Dec 2006
    Location
    East Central IL
    Posts
    3,448
    My old Chrony says that 13.5 gr. Unique under the Lyman 457124, cast 20-1 and PC'd, from my repro Trapdoor carbine duplicates the 45-55-405 load and shoots to POA using the 1879 'C' sight settings. Not uncomfortable to shoot and every bit as accurate as my BP loads without the clean-up.

    Bill
    "I'm not often right but I've never been wrong."

    Jimmy Buffett
    "Scarlet Begonias"

  7. #7
    Boolit Master smkummer's Avatar
    Join Date
    Aug 2007
    Location
    So. Indiana
    Posts
    1,861
    Planning on shooting 200 yard steel. The last loads were 14 grains. I’ll see how they do and probably creep them down to 13.5 maybe 13. Thanks.

  8. #8
    Boolit Buddy hornady308's Avatar
    Join Date
    Apr 2009
    Location
    North Carolina - in the Piedmont
    Posts
    378
    I'm using a 310gr bullet that Ranch Dog designed for Marlins in 45-70. I only use 12gr of Unique since it is very accurate and I am concerned about placing undue stress on this rifle. It has a low 4-digit serial number and has clearly seen a LOT of use.Click image for larger version. 

Name:	45-70 1874 April 2017 RD460-300-rf 12gr Unique 92yd.jpg 
Views:	12 
Size:	85.2 KB 
ID:	281319

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Abbreviations used in Reloading

BP Bronze Point IMR Improved Military Rifle PTD Pointed
BR Bench Rest M Magnum RN Round Nose
BT Boat Tail PL Power-Lokt SP Soft Point
C Compressed Charge PR Primer SPCL Soft Point "Core-Lokt"
HP Hollow Point PSPCL Pointed Soft Point "Core Lokt" C.O.L. Cartridge Overall Length
PSP Pointed Soft Point Spz Spitzer Point SBT Spitzer Boat Tail
LRN Lead Round Nose LWC Lead Wad Cutter LSWC Lead Semi Wad Cutter
GC Gas Check