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

 
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Old 09-12-2013, 10:26 AM
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Reloader 33 (Alliant) for "lesser" calibers [than 338]?

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.
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Old 09-12-2013, 03:53 PM
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Re: Reloader 33 (Alliant) for "lesser" calibers [than 338]?

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?
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Old 09-12-2013, 05:49 PM
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Re: Reloader 33 (Alliant) for "lesser" calibers [than 338]?

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.
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Old 09-12-2013, 09:55 PM
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Re: Reloader 33 (Alliant) for "lesser" calibers [than 338]?

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.
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Old 09-13-2013, 05:57 AM
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Re: Reloader 33 (Alliant) for "lesser" calibers [than 338]?

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.
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Old 09-14-2013, 07:25 PM
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Re: Reloader 33 (Alliant) for "lesser" calibers [than 338]?

Quote:
Originally Posted by AZShooter View Post
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:
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.
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
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Old 12-11-2013, 05:08 PM
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Re: Reloader 33 (Alliant) for "lesser" calibers [than 338]?

Quote:
Originally Posted by gewehr View Post
I have used reloader 33 in a 7mm rem mag and was able to get 3350 out of a 180 hybrid (81 gr)with minor pressure signs and 3250 (79.5) with no pressure signs out of a 27.5" tube. It seems to me to be extremely effective in longer barrels in getting a person that harder to get 150 fps. This powder seems to be easier to load for than retumbo accuracy wise
Dang, that's 7 RUM velocities
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