I see that RL-33 is due out in a few months. Is this powder projected to be viable for the 300 RUM?
If so since RL25 shoots so well with my gun using 200 AB I may give it try.

Don

It should be very close to retumbo. Between RL25 and RL50.

Should work great!

I would be inclined to try it. There is no apparent reason it wouldn't work well in that cartridge.

I just wish the Reoder series were more temp insensitive.

Here is RL 33 load data from Ben Amonette at Alliant

Reloder® 33 Load Data

Caliber Bullet Brand Type Weight OAL Primer Brass Charge wt (gr) Velocity (ft/sec) Pressure (psi)
7mm STW Hornady A-max 162 3.600 215 Fed 88.4 3165 63696
Speer HPBT 175 3.600 215 Fed 85.7 3033 63125
Speer Deepcurl 175 3.600 215 Fed 84.5 2946 63477

300 Wby Mag Sierra Match King 220 3.560 215 Fed 89.0 2865 63347
Nosler Partition 200 3.560 215 Fed 89.1 2889 58469

338 Lapua Mag Sierra Match King 250 3.645 215 Lapua 103.5 3001 63822
Sierra Match King 300 3.645 215 Lapua 97.5 2748 64530
Nosler Partition 250 3.635 215 Lapua 99.3 2934 64076
Barnes TSX 225 3.635 215 Lapua 106.0 3118 63568

7mm Rem Mag Speer SP 175 3.290 215 Fed 75.2 2909 60073
Speer Deepcurl 175 3.290 215 Fed 73.8 2853 59707

300 Win Mag Sierra Match King 220 3.510 215 Fed 79.6 2780 63415


JD338

Looks pretty danged good for the bigger mags. Supposed to be temp insensitive like RL17 isn't it?

Scotty,
Yes, it is temp sensitive.

I can't wait to give it a try in the 338 RUM.

JD338

I'd be curious if it would give me more velocity than the book max charge I'm using now with RL25 and the 200 AB @3100 fps and similar accuracy. Guess I'll find out later.

JD,
I would assume your 338 RUM would fair well with it.

Don

It should be really good in a 264WM as well I would think. It would be very hard for me to mess with my current load, but I am not sure I could resist. I have had really good luck with the Alliant powders.

My impression of what I heard from the presentation from the Shot Show was that RL33 is suppose to give an extra 100-150 fps over similar powders as well as be temp insensitive

Man, that would put 140's in the 3300 range out of the 264. I imagine it would be a screamer in the RUM's as well..

Plan to try some 160's and up in the STW when it comes out!

SAME HERE!

Scotty,
I've had equal success with Alliant powders as well. I remember years past I shot my 7 Rem Mag with RL 22 and had excellent results. Time will tell with RL 33. If the track record stays true with Alliant Powders RL 33 should be a great success.

Don