Reloader 33 (Alliant) for "lesser" calibers [than 338]?

Discussion in 'Reloading' started by Max Heat, Sep 12, 2013.

  1. Max Heat

    Max Heat Well-Known Member

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    After inquiring about it, one of my local dealers had finally put some on the shelf, so I grabbed a lb. It was on the advise of numerous shooters, some of them being from THIS site. But it was a BR dude that I was shooting along side of at one of the local ranges (shooting a WC version of the 6.5x284AI, IIRC), who convinced me to actively start looking for some (I shoot the 7mm ultra magnum), after seeing his shot targets. He gave me the URL of a mail-order "dot-com" (but aren't they ALL, now) outfit that had some in stock (this was several weeks ago), but I did not want to pay the extra hazmat shipping premium.

    Anyways, being that 33 is currently a very fresh release, there isn't much publicized information or reviews/data about it. Here is what I do know: They are claiming that 33 has higher lot-to-lot consistancy than 25 does. It HAS superceeded 25, in becoming the slowest burning of the series (aside from 50, which is designed for the .50BMG). It was designed specifically for the 338L, which has nearly the same case capacity as the 7RUM (or 284U, if you prefer), but It's larger caliber allows it to shoot a 50% heavier projectile.

    I have used 19, 22 [which is a bit temperamental], and 25, with each requiring several additiional grains to achieve the same velocity. So obviously, efficiency WILL decrease. I haven't loaded or shot any 33 yet, but I will be soon, and I think it just might top out the 100gr capacity of the RUM case, vs around 95gr, for 25. I'd like to know what performance [and other charactoristics] I should be expecting out of it, before I start testing the loads. At this point in time I only have 26" of barrel to work with. But that # will be extended out to 32", when my new barrel arrives from McGowen in about 2 months. I'm thinking that the differences in 33, vs 25, may be even more substantial in THAT scenario.
     
  2. Max Heat

    Max Heat Well-Known Member

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    I guess i overlooked alliant's claim that 33 is "also suited for a variety of large magnum rifle cartridges", so I guess that answers the original concern. But I'd still like to know how it compares to 25, for those who have tried it. Is this thread even in the proper sub-forum?
     

  3. MontanaRifleman

    MontanaRifleman Well-Known Member

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    Yes, I think it is in a proper sub-forum. It's nice to know some folks actually are concerned about that.

    I got some to try out in my 300 RUM, 6.5 WSM and 6-284. They are all very close in overbore capacity. I used light loads of it to break the barrels in but haven't done any load work with it yet.

    From my reading, RL33 will come close filling the case under a 230 Hybrid before maxing out. It might also be good for the 215 and larger bullets. I think it might be too slow for smaller bullets in the 300 RUM.

    The 7 RUM is a good bit more over bore, so I am guessing it should do well with the larger bullets but probably will not fill the case with them. With lighter bullets you would get more powder in the case. I know if I had a 7 RUM, i would definitely be giving it a go.

    Also, RL33 is a dense powder. You can get about 4 gr of it in a RUM case than you can Retumbo. I measured it. So expect a 100% density load to be about 103-104 gr.
     
  4. Lefty7mmstw

    Lefty7mmstw Well-Known Member

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    Good choice for the 7rum. With 175gr. + pills I'd be all over rl50 or h50bmg though. Longer pressure peak and better case fill. I was using I 5010 (and h50bmg replaces 5010) in my 7rum with 175 hdy pills when I went there, but I've file 13'd the targets as I don't have the rifle any longer so I can't help with charge weight.
     
  5. AZShooter

    AZShooter Well-Known Member

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    I was one of the first guys to get this powder. I immediately tried it in the 257 weatherby and 6mm-284. Also tried it with a 7 rem mag. Posted results here over a year ago.

    Since that time also tried it with a 300 RUM and 7mm/375 Ruger


    Conclusions? Works best with the heaviest bullet for caliber. Slower than retumbo. Mid range load data for Retumbo is good starting point for RL-33.

    Results:

    110 accubond moly coated in 28" 257 Roy used 84.5 gr of RL-33 for 91 fps gain over a max load of RL-25 velocity 3735 fps

    105 berger hybrid in 28" 6mm-284 Retumbo max load was 3307. 64.5 gr of RL-33 yielded a 178 fps increase! velocity 3535 fps

    230 gr berger hybrid in 24" 300 RUM (no comparison) yielded 2975 fps with 100 gr of powder

    180 hybrid in 29 3/8" 7mm/375 (no comparison) with 83 grs of RL-33 yielded 3200 fps

    180 hybrid in 26" 7mm/375 (no comparison) with 84 gr of RL-33 yielded 3070 fps

    162 a-max in 7 rem mag compared to retumbo had similar velocities. Ran out of room for RL-33 even with 6" drop tube. Never got to a max load.


    Above load data may be too high for some rifles. Again retumbo mid range load data is a good starting point for this powder.
     
  6. c_bass16

    c_bass16 Well-Known Member

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    I would tend to agree with that, I had very good results with 180 Bergers with my 7mm Rem Mag, but I believe it would be better suited for a 7RUM and even heavier bullets. (Berger 195s)

    I had a bit of a hiccup getting 180VLD Hunting bullets so i got some 168s and am planning to work up a load tomorrow to see what they will do, but I'm not expecting anything to insane.
    I'm backing AZShooter here...it's probably best suited for running the heaviest bullet you can find for the "Lesser than 338" Mags
     
  7. MontanaRifleman

    MontanaRifleman Well-Known Member

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    Dang, that's 7 RUM velocities
     
  8. Lefty7mmstw

    Lefty7mmstw Well-Known Member

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    I would be glad to get 3200 fps out of a 170-180 grain pill from my new 7rum (I've only pushed to 3500 fps with 140's and 3100 fps with 175's in my old rifle), but then I've only been able to get 2800-2900 from a 7rem with 175's and retumbo in a 26" bbl..
     
  9. benchracer

    benchracer Well-Known Member

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    I have been wondering if RL33 would offer any advantages over Retumbo in a .264 Winchester Magnum. Haven't seen any for sale yet, so haven't had the chance to try it. Also haven't seen anything posted by anyone else about trying this powder in .264WM. Though Retumbo and H1000 are known to work well in 6.5-284, I am thinking RL-33 would be too slow for that cartridge. Thoughts anyone?

    I am planning to buy the latest version of Quickload soon. Does anyone know if RL33 has been incorporated in QL yet?
     
  10. MontanaRifleman

    MontanaRifleman Well-Known Member

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    I'm guessing 33 would do very well in the 264 WM with 140 and 160 bullets.
    and I think you're right that it would be too slow for the 6.5-284.

    I think the best way to get some is to order it. Keep watching the online suppliers for inventory.
     
  11. benchracer

    benchracer Well-Known Member

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    I am interested in trying it. Will have to keep an eye out for it online. Thanks for the heads up. When I do finally get my hands on some, I will try it out and report back.

    If it does offer a significant gain in .264WM, I may have my 6.5-284 converted to .264WM and try it with 160's (my current .264 doesn't have enough twist and won't until it's time to change the factory barrel).
     
  12. ragsflh

    ragsflh Well-Known Member

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    what i read it was designed for the338 lapua mag.got some but had not had time for load devolment
     
  13. Erik Kiser

    Erik Kiser Well-Known Member

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    Third Generation has some RL33
     
  14. benchracer

    benchracer Well-Known Member

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    Thanks! Just ordered some...