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Thread: Rx7...

  1. #1
    Boolit Master


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    Question Rx7...

    Who makes this powder and is it still available...

    (Reloder 7?)

    What powder might it compare to as far as burning rate goes...

    Thanks...BCB

  2. #2
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    If it's referring to Reloder 7, it's made by Alliant, and is still in production. I use it in my .375 Winchester.

    Hope this helps.

    Fred
    After a shooting spree, they always want to take the guns away from the people who didn't do it. - William S. Burroughs.

  3. #3
    Boolit Master

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    Availability seems to be hit or miss although I just scored two pounds locally about a month ago.

  4. #4
    Boolit Master



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    It is not hard to find
    Great for cast bullets
    Lot of data in the Lyman Cast Manual
    "Had his shooting been as good as his running, he might have given a better account of himself."
    James. C. Henderson

  5. #5
    Boolit Buddy
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    BCB

    You can find that info in QL burn rate sheets,
    pull up the powder see the info, in QL,
    then check the BR sheets.

    I know you are not used to using those sheets.

    HTH,

    Tia,
    Don

  6. #6
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    Many current manuals refer to it as RL 7.
    [The Montana Gianni] Front sight and squeeze

  7. #7
    Boolit Man
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    Those powders do go by a couple different abbreviations in a few manuals, its confused me a couple times.

  8. #8
    Boolit Master
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    Alliant Reloder 7 - in the 4198/2015 range. Cleaner than many at lower pressures. Fine grained 'stick' powder - measures well. Excellent boolits powder in 32 Special, 35 Remington, 30-30, and 308. good in 223. Powder Valley has it. On the shelves in Sportsman Warehouse, Cheyenne, WY.

  9. #9
    Boolit Master

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    Please note: Alliant RL7 IS NOT Accurate 7 (Rx7): they have vastly different burning rates.
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  10. #10
    Boolit Master
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    RX7 and RL7 are both used to describe Reloder 7 currently from Alliant and previously Hercules reloder 7.

    as was RE7 for years
    Last edited by swheeler; 02-24-2017 at 07:21 PM.
    Hell, I was there!

  11. #11
    Boolit Master
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    Reloader 7 is my favorite smokeless powder for 45-70 and 30-30.


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  12. #12
    Boolit Master
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    A lot of people spell it wrong too, RELODER
    Hell, I was there!

  13. #13
    Boolit Master
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    WHEN THEY FIRST MANUFACTURED IT THEY CALLED IT rx7, NOW IT'S CALLED rl 7, AT THE TIME THEY ALSO MADE rx 11 AND RX21 IF MEMORY SERVES ME RIGHT.

  14. #14
    Boolit Master
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    It has always been Reloder 7, Sierra used RE-7 for years then RX7, Hornady spelled it out, most manuals give a list of their abbreviations, that's all it is
    Hell, I was there!

  15. #15
    Boolit Master


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    Quote Originally Posted by nvreloader View Post
    BCB

    You can find that info in QL burn rate sheets,
    pull up the powder see the info, in QL,
    then check the BR sheets.

    I know you are not used to using those sheets.

    HTH,

    Tia,
    Don

    N130…0.7350
    N133…0.7350
    296…0.7300
    RX7…0.7250
    2200…0.7170
    BENCHMARK…0.6860

    There are the Ba numbers for the powders that are around Reloder 7…

    I am a bit surprised that 296 is so close to Reloder 7…

    So, can I use 2200 and Benchmark with the same data as Reloder 7, at least the starting loads and then work up?...

    I’m I interpreting the Ba numbers correctly?...

    Thanks…BCB

  16. #16
    Boolit Master
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    Check Powder Valley website; they had it in stock recently.

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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