Does it have 300 RUM data? That's the main reason I'd pick it up. I see they have some 338 RUM data on their website--looks like pretty good data as well!

Thanks.

Jon A,

There is no data in the Nosler Manual No. 4. I think the book pre-dates the round.

There is however some data in the fifth edition Hornady manual. If you want anything specific, let me know.

Patrick

I called Nosler to give me some data on the 300RUM. No dice. They said they don't have any yet. I was also curious since they post 338RUM data. Strange, you would figure the 300RUM before the 338.

Bigcountry, don't know why Nosler told you that because they sent me reloading data for both the .300 Ultra Mag & .338 Ultra Mag a few weeks ago. I'm at work rite now & the data is at home. I'll post what I have later tonight.

It was two months ago. Things could have changed. If you don't post, please email sometime. I would appreciate it.

Thanks guys, that's what I needed to know. Looks like I'll pick up the Hornady manual instead.

If you wouldn't mind posting a little data for now Patrick, that'd be great. I'm mainly interested in 180's using H870 or H1000.

If you could post what you have AJ300MAG, that'd be great as well. Their 338 RUM data looks pretty hot (250's at nearly 3000) so I'm interested at what they can do with the 300 RUM.

Jon A, heres what I've gotten from Nosler for the 180g bullets for the .300 Ultra Mag.
Bullet: Nosler 180gr.BalisticTip/Partition
C/T Balistic Silvertip/Partition Gold,& Fail Safe
Case Type: Remington Primer: Fed 215
Cart. Max. O.A.L 3.600" Barrel Twist 1-10"
26" Wiseman Test Barrel

Powder: GRS. MUZZLE LOAD
POWDER VELOCITY DENSITY
IMR4350 82.0 MAX 3187 81%
MOST ACCURATE 80.0* 3125 79%
POWDER TESTED 78.0 3053 77%

RL22 87.0* MAX. 3220 86%
85.0 3146 84%
83.0 3077 82%

IMR7828 89.0 MAX 3229 88%
87.0* 3137 86%
85.0 3093 84%

*= Most accurate load tested
*CAUTION* Due to internal construction differences, Always begin with starting loads when using Partition Gold or Fail Safe products.

This was al the data they gave me for the 180gr bullets. Hodgon and Alliant Powders has loads listed on their web site. Alliant says you can load up to 90.0g of RL22, for a velocity of 3165. I shot this load thru my Rem Synthetic BDL and it showed the beginnings of high pressure.

89.0g 3231fps
88.0g 3165fps
87.0g 3142fps

I'm just starting to work with this gun, had a 3 shot group of 7/16" @ 100yrds using the 180g Partition, 89.0g RL22. Outside temp was 30deg, not sure how it will shoot in the summer heat. Good Luck.

FYI, Nosler should be coming out with Nosler #5 any day now my sources told me. That is all I will post. sure-shot

Jon A,

From Hornady 5th edition. For 178-180 gr bullets and H1000:

78.7grs / 2800FPS
82.4grs / 2900FPS
86grs / 3000FPS
89.7grs / 3100FPS
93.3grs / 3200FPS MAX LOAD

Good shooting

Patrick

FWIW-I asked quickload to take the pressure to 60,000psi with h1000 and a 180 partition and it came up with 96.0 h1000. If you could do a search here on this websites past posts saeed did a extensive test on this gun.
BUT he was able to run some real hot loads so be careful working up to that data. I'm seeing lots of reports of people breaking 3400 fps with a 180 in this gun but, I'd be watching for pressure signs from 3300 fps on up. JUst my humble opinion.

Thanks for the data guys. Unfortunately I must say it's pretty disappointing. You'd think with a 25% increase in case capacity they'd be able to beat 300 Win Mag velocities!

Why the heck do they use such fast burning powders? I would think with such an overbore case that anything faster than H1000 would be pretty worthless for bullets weighing any more than 165. H1000 actually seemed perfect for my 300 Win (26") all the way down to 150's so I'm thinking H870 should be the powder to beat for 165's, or at least 180's, on up in the RUM. Both the Hodgon data and Barnes seem to bear this out, but since Saeed had such good luck with H1000 I wasn't going to discount it without trying it.

While we're posting data, I'll give some from the Barnes Manual:

180 XLC:
96g H1000 3301 fps
99.5 Big Boy 3419
113 H870 3400

200 XFB (non-coated, a very high friction bullet in my experience):
103 H870 3134

220 Solid RN (non-coated):
101 H870 2983

250 RN (non-coated):
99 H870 2775

That's from a 24" barrel and is about what I'd expect from this case out of a 24" barrel. The Hodgon data isn't much behind, also from a 24" barrel although they use lighter charges and they keep the pressures well below max. The Accurate Arms data for AA8700 pretty much falls in line with the Barnes data--similar charges as H870 but a bit less velocity--for example 113 of AA8700 with a 180 Partition gives 3323 vs 3368 from the Barnes with the same charge.

Oh well, maybe I won't buy the Hornady manual . Hopefully when the new Nosler comes out they'll try some slow powders! What do they think this is, a puny little 300 WSM?

Anyway, thanks again for the data guys.

[This message has been edited by Jon A (edited 12-30-2001).]

Jon,

Just to finish up, the Hornady manual only shows one load creeping into the 3300 region, and that's with RL25. Lowest load is 81.6gr, max load 95.3. I think you're also probably right to wait for the new Nosler manual. Hornady put into two books what Nosler manage to get into one, and I personally find Nosler more informative, as they actually show which loads were the most accurate tested. And if we forget about absolute velocity for a second, I believe accuracy if by far the more important consideration.

Best regards

Patrick

Jon, The load I shot with 90g of RL22 was an even 3300fps over my Oheler. Nosler lists 89.0gr Max, Alliant shows 90.0gr @ 3165fps.as Max. I'm just starting to play with this gun, Shooting 89.0gr RL22 gave me a three shot group of 7/16"@ 100yds, 3231fps. I'm working on the trigger to get down to 2.5lbs, hoping for warmer weather to continue load development.