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Thread: Reloder 21 - Old Timer's Load Memory Question?

  1. #1

    Reloder 21 - Old Timer's Load Memory Question?

    I recently inherited a few Lbs. of Reloder 21 powder in sealed, undamaged square cans. It appears that Reloder 21 was discontinued in or about 1972; so, I've not been able to get decent loading or burn rate information on it. I'm planning to shoot .30-06 Springfield -- 140 to 170 Gr. and 300-WSM -- 140 to 180 Gr bullets with it. A response from any old-timers out there with a good load-data memory or decent older reference books would be appreciated. Thanks, Rob Carney

  2. #2
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    ShooterAZ's Avatar
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    An old burn rate chart shows that RL21 has a burn rate similar to that of H380. A quick google search didn't turn up any load data for 30-06, but it appears that the Speer Reloading Manual #8 includes some data for RL21. If you can get your hands on that book it might be worth your while getting it.

  3. #3
    Boolit Buddy
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    Is this for cast or jacketed bullets? I'm having a hard time finding anything above RX7 for cast in the 30-06

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    Sorry that's so small, I'm working on it

  4. #4
    Boolit Buddy
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    This is all from Lyman's 44th. 1967.


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    PM me and I can give you more info.

  5. #5
    Boolit Grand Master Texas by God's Avatar
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    I don't remember Re21 being a slow burner. So the starting load for the 220 gr jacketed bullet is where I would begin with your weight range of CB's. Try one or two before loading a batch. For my memories sake- what color are the odd kernels?

    Sent from my SAMSUNG-SM-G930A using Tapatalk

  6. #6
    Boolit Master
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    With the Reloder series of powder don't use the number to determine whether it is slow or fast burning. Use the chart as shown from Dimner. Many of the Reloder series powder recently available have a lower number but are slower burning.You're not going to find new info on it as it's at least 30 years old.

    I've not used Re 21 but a gunshop had 6 cans of it when there was a powder shortage. It piqued my interest, but I didn't purchase it, had enough rifle powder at the time.

  7. #7
    Boolit Grand Master

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    Rob there is data in Sierra manual copy write 1971
    30-06, 150 gr Sierra
    RE-21 - 51.3 to 55.5 max, 2600-2800

    165 gr sierra
    46.5 to 55.5 max, 2400-2800

    168gr
    46 to 54.5 max, 2400-2800

    180 gr
    45.9 to 52.6 max, 2400- 2700

    190gr
    43.6 to 50.6 max, 2300-2600

    200 gr
    43.5 to 50.1 max, 2200-2500

    220 gr
    42.7 to 49.2 max, 2100-2400
    Last edited by swheeler; 03-04-2020 at 11:10 PM. Reason: ?
    Hell, I was there!

  8. #8
    Thanks to all who responded.
    You provided the information I needed; especially swheller, in Montana my son's adopted state.
    I'm sorry about posting on two different forums - it won't happen again.
    Rob Carney

  9. #9
    Boolit Grand Master

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    No problem just wanted to make sure you got the info. If you need more for different caliber just let me know I see what I can find. Scot
    Hell, I was there!

  10. #10
    Thank you, Dimner! I really appreciate you going to the trouble of scanning and posting this data -- it's what I needed.
    Do you have similar pages for the 300WSM; or was that before Winchester introduced the cartridge? Rob Carney

  11. #11
    Boolit Grand Master

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    The WSM cartridges were introduced about 30 years after RX 21 was discontinued, doubt there's any data
    Hell, I was there!

  12. #12
    Boolit Buddy
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    Correct, nothing on the short mag in my manual....sorry

  13. #13
    Boolit Grand Master Texas by God's Avatar
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    The .300 H&H has close to the .300 WSM case capacity if you can extrapolate the data, assuming double checking everything.

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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