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Thread: Alloy for .30-40 Krag, and pressures

  1. #21
    Boolit Master
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    Quote Originally Posted by Rich/WIS View Post
    Believe the groove was a carry over from BP and was a scraping groove to collect fouling from the prior shot.
    I did wonder about that. But the groove is so small. Then again, smokeless has much less fouling, so maybe that makes sense. Lots of strange things were done back in the day. This is a modern mold however. NOE.

    Lyman #2 i(95-5-5) should be quite a bit harder, about 15-16 BHN, than modern wheel weights (97-3Sb) which about 12-13 BNH.
    I have exactly zero experience with wheel weights other than tying them to duck decoys 40 yrs ago. I've cast a lot of bullets, but they have all be pure tin combined with pure lead. This stuff is very different but I think I have it working better now. The bullets look good anyway. We will soon see how they shoot (Friday, probably).

  2. #22
    Boolit Grand Master
    rintinglen's Avatar
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    There were a number of boolit designs that had dirt scrapers on them, many of them designed specifically for use in the 30-40 for competition back in the early 19th century. There was a champion shooter named Hudson who designed a bunch of boolits back then, many of which had the dirt scraper, enlarged front band with the dirt collector groove in front of it. Some designs were intended to be hand-seated into fired, un sized cases, with the enlarged front band serving as sort of a stop-ring to hold the boolit from sinking into the cases, with the resulting cartridge single-loaded into the chamber. A fellow named Kephard was a major user of such loads, especially in 32-40 cases, and he had several moulds made up for such use.
    _________________________________________________It's not that I can't spell: it is that I can't type.

  3. #23
    Boolit Master
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    I've seen the scraper concept in blackpowder a lot, and even used it with paper patched bullets. This groove seems so small for that purpose, but what else could it be? So that must be it.

    I'm familiar with ring bullets as well and various other pseudo and true breech seating approaches. I've only seen a very few do well with the stop-ring bullets, for some reason.

  4. #24
    Boolit Master
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    Just an update. Shot 40 rounds with different powder charges. Excellent accuracy. I think these bullets will work just fine. I have a lot of things i can try yet, but most loads shot repeatable 5-shot groups in the 1.25" range at 100 yds. Really can't complain. Except for that trigger. I certainly can complain about that Krag trigger. Something else to work on.

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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