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Thread: Sr 4756 ???

  1. #21
    Le Loup Solitaire
    Guest

    IMR 4756 powder

    I have used 4756 for many years now; in the 9MM (Luger & Baretta) 4.7 grains runs the actions well and doesn't generate a lot of pressure. Neither pistol is a target/bullseye machine anyway, but the grouping at 25 yards with 115-120 grain bullets- RCBS truncated CN and Lyman 358242 will consistently group into 4 inches off the bench. With 44 Mag, using H&G mold 503 @ 250 grains, I have been using 9 grains of 4756 for a short range/lighter load at 25 yards off the bench and it does 10 ring one hole all day. Undoubtedly it can be pushed a bit harder, but there is no reason for me to do that. Both loads are economical and a pound goes pretty far. Its a good powder and I'm glad that it is still around. LLS

  2. #22
    Boolit Master
    Join Date
    May 2006
    Location
    Ohio- Painesville and Cleveland and Port Clinton.
    Posts
    2,297
    I've shot a fair amount of it in 30 cal rifles. In the Red Dot/Unique category. Start around 11 grains, work up from there. My 1891 Argentine does pretty well with 14 grains under a 185 gr bullet.

  3. #23
    Boolit Master
    Join Date
    Jun 2007
    Location
    Upstate New York
    Posts
    673
    I find that 4756 works fine. but is very sensitive, so work up to a load in small increments.
    4759 is a great powder also and works very well in larger cases for cast loads at slower speeds. It is a favorite of the Schutzen people.
    Not to long ago, I read an article on why you never see 4756 or 4759 loads in magazines. It seems that too many people mix up the two powders and have blown up guns.
    "There's a Fine Line Between Hobby and Mental Illness"!

  4. #24
    Boolit Buddy
    Join Date
    Jan 2009
    Posts
    215
    4756 works in all the popular handgun cartridges. I've used it for 35 years. It isn't necessarily the best choice in a particular cartridge, but works nevertheless.

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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