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Thread: Almost 45/70

  1. #101
    Boolit Master
    Join Date
    Feb 2010
    Location
    Deary, Ideeeeeeho
    Posts
    2,392
    I tried that one time, and I think that at least for most of us and the equipment we use, we will be hard pressed to see any positive results. I didn't at least.

    For most of us likely the best results are found in proper load development by which we determine the powders and bullet favored by the firearm we happen to have in hand.

    I'll even go so far as to say that primer choice, as long as we have positive results from the brand in use, will make little difference during the early stages of load development.

    Efforts to find the best primer - brand-type - are much like adjusting bullet seating depth to find the harmonics "sweet spot" of a firearm, best done only after we have established a solid base line load by which to judge the results of such changes.

    Not saying that always placing the loaded brass in a repeatable position will not produce positive results, but how can we ever know unless we have a solid and confirmed bench mark by which to make that judgement?

    Even then, our firearm may not be of the quality that such changes could show confirmed results one way or the other.

    Crusty Deary Ol'Coot

  2. #102
    Boolit Grand Master Artful's Avatar
    Join Date
    Sep 2007
    Location
    Valley of the SUNs, AZ
    Posts
    9,254
    Actually one of the best groups I ever saw shot was with a single case reloaded on the shooting bench - but I just don't care enough to do it that slowly

  3. #103
    Boolit Man
    Join Date
    Jan 2007
    Location
    Chattanooga, TN
    Posts
    95
    I happened to turn up the letter from O.H. McKagen who would measure samples from slugging the bore. The Danish RB had a bore diameter of .4454 and a grove diameter of .4642. Grove depth was .0096. This measurement was done in 2004. Sent at the same time, the 1889 Trapdoor sample measured .4521 for the bore and .4624 for the grove diameter. The Groove depth was .0051. It was suggested that the same .464 bullets be used in both rifles. The Lee hollow base 405gr. bullet did well in both rifles in the limited experiments. Mr. McKagen no longer offers this measuring service. I purchased the Dane cheaply because the previous owner wanted to use it in cowboy matches but found the 45-70 cases were splitting.

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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