Loads for 300 RUM

[Sonic Crack]

Lets get some loads posted for the 300 Remington Ultra Mag. Feel free to copy the format below and add your info (to help keep it simple and organized). Ill be posting my loads whn my rifle is finnished

Rifle:
Barrel:
Brass:
Bullet:
Primer:
Powder:
COAL:
Ogive:
Velocity:
Best Group:

 

[338RUM runner]

Re: Loads for 300 RUM

Rem 700 LSS LH 26" 180 Hornady SST Fed 215 Reloader 25 96.0gr 3.670 coal 3235 FPS .780@100. Only mods on rifle are recrown and trigger adj. 6 Elk down and 850yds longest shot(3rds 2hits)Leupold 4.5-14 LR

 

[300rockbuster]

Re: Loads for 300 RUM

What xp said. 4 dead elk 75yrd to 666yrd. Love my ultra.

 

[Ghogs Nightmare]

Re: Loads for 300 RUM

Rifle: Rebuilt 700 by A.O.
Barrel: Bartlien 1/10
Brass: Nosler
Bullet: 208 AMAX
Primer: Winchester Large Rifle Mag
Powder: H4831SC
Charge: 84.5
COAL: 3.610
Ogive: Dunno
Velocity: Havent Chrono'd yet
Best Group: .418
.................................................
Prior to rebuild:
Retumbo 94.7
200Gr Accubond
Under an Inch
Killed the snot outta plains game. To include knocking the hair off an impala at the exit.
.
.
These are 5 shot groups as well. See the AO thread for pics of the top load.

 

[Hookturnr]

Here's my .02

Rifle: Semi Custom 700
Barrel:Hart tight chamber 27 5/8"
Brass:Full prep Remington/straight outta the box Nosler
Bullet:208 Amax/210 VLD
Primer:Federal LR Mag
Powder:H1000
COAL:3.605 (max mag length)
Ogive:
Velocity:3060 +/-12fps
Best Group:.430 @100 8.128 @950

I used 92.0 gr Retumbo behind a 200gr Accubond in the factory barrel for pretty consistent 1/2-3/4MOA before rebarrel

 

[Stealff]

Rifle: Rem 700
Barrel: Krieger heavy contour 1x10, 27"
Brass: RP + Nosler
Bullet: 208 A-max
Primer: CCI 250 or WLRM
Powder: 81 gr. H4831sc
COAL: 3.86
Ogive:
Velocity: 2850
Best Group .45"

 

[JWV]

Here's my .02

Rifle: Semi Custom 700
Barrel:Hart tight chamber 27 5/8"
Brass:Full prep Remington/straight outta the box Nosler
Bullet:208 Amax/210 VLD
Primer:Federal LR Mag
Powder:H1000
COAL:3.605 (max mag length)
Ogive:
Velocity:3060 +/-12fps
Best Group:.430 @100 8.128 @950

I used 92.0 gr Retumbo behind a 200gr Accubond in the factory barrel for pretty consistent 1/2-3/4MOA before rebarrel

How has the brass life been. Specifically with the Remington brass? That is what I have but am just getting the barrel put on and haven't done any shooting.

 

[Hookturnr]

Brass life has been good, but I don't push it to max either and I anneal every 3rd firing. On 7 firings with Remington brass and 3rd with nosler

 

[Birddog67]

Rifle : Remington sendaro Simi custom
Barrel: 26" with a vias brake 1 in 10 twist
Primer: federal match mag rifle
Powder:H1000
COAL: don't know don't care
Ogive: 3.989
Velocity: 2980
Best Group: .48
Brass Remington
Bullet 215 VLD hybrid
Will shoot out to 1000 well under MOA

 

[Gaps]

Brass selection

So is Remington and Nosler the only choices for brass? If so, is Remington the better choice? Thanks for any help!

 

[Hookturnr]

The Remington is easiest to come by and when match prepped it's good. The Nosler is good stuff but fast getting too expensive. Federal occasionally runs some but I haven't used it. Norma occasionally runs some when they're not making the Nosler brass and it's good but next to impossible to find. If you find some, whatever it is, buy it to start out with and take care of it. Annealing is big, not pushing too much pressure is bigger. I maxed out some loads and stretched some primer pockets before I went back to a midrange load with great accuracy albeit a little slower and my brass has thanked me ever since...

 

[jfseaman]

Rifle: R700 custom by Bruno
Barrel: Krieger
Brass: Norma
Bullet: Berger 210 VLD
Primer:Fed 215M
Powder:H1000
COAL:8.5
Ogive:
Velocity:3063
Best Group:.6 @ 300 yards, 4 shots

 

[Tackleberry]

Seaman what is your powder charge? Wanting to try some 210's this week. I have h1000, 4831sc but no retumbo. I would think same powder charge would work with 208 amax also

 

[lancetkenyon]

Rifle: Remington 700BDL SS
Barrel: 26" 1 in 10" factory w. KDF muzzle brake
Brass: Remington
Bullet: 175 gr. Barnes LRX
Primer: Remington 9 1/2 Mag
Powder: 88.0 gr. RL22
COAL: 3.844" (making my rifle a single shot)
Ogive:
Velocity: 3361 FPS
Best Group: .417"



Brass: Remington
Bullet: 175 Gr. SMK
Primer: Remington 9 1/2 Mag
Powder: 88.2 gr. RL22
COAL: 3.710"
Ogive:
Velocity: 3298 FPS
Best Group: .344"

 

[briscoetab]

Rifle: Stock Remington 700 Sendero SFII
Barrel: Stock 26" with a FB Brake
Brass: Remington
Bullet:208 A-Max
Primer: 250CCI
Powder: 85.2gn of H1000
COAL: I think it is 3.808 but could be wrong, I rarely look at this measurement and don't have it wrote down
Ogive: 3.153
Velocity: 2833
Best Group: .604

I'm still playing with loads, I'm pretty sure this rifle is capable of better groups. I just worked up a bunch of loads using 208 amax and retumbo but haven't had a chance to shoot them yet. I did extensive testing on with the H1000 and 208 amax and that was the best I could get. I think my rifle just dosen't like H1000, will post my results with the retumbo.

 

[Gaps]

Phoenix Custom Rifles 300 RUM

Krieger 28" Remington Varmint/Sendero contour 1-10 twist
Remington Brass
Berger 230gr Match Hybrid Target
Federal 215
89.4gr Retumbo
3.899" coal
3,049fps

3 shots measured 1.75" @1,000 yards

3 shots measured .322" @ 100 yards

 

[briscoetab]

Just wanted to up date my earlier post. I finished with the retumbo and 208 a-max's and the results were an improvement over 208 and H1000.

Rifle: Stock Remington 700 Sendero SFII
Barrel: Stock 26" with a FB Brake
Brass: Remington
Bullet:208 A-Max
Primer: 250CCI
Powder: 89.1gn of Retumbo
COAL: I think it is 3.808 but could be wrong, I rarely look at this measurement and don't have it wrote down
Ogive: 3.153
Velocity: 2915
Best Group: 3 shot group .270" at 100yds. I shot 2 more rounds after this for a 5 shot group which streched to .720". I don't know if my barrel was still too hot or if it was me or if .720" is just the best this rifle can do. The 4th and 5th shots went in same spot, just a little low and left of the first 3 shots. This is also the only groups I've shot with this load right now so I guess I'll see how it holds up with some more shooting.

 

[AbitNutz]

I love this caliber!
Rifle: Savage Target Action single shot, PT&G bolt head, SSS eject/extr, Rifle Basix trigger
Barrel: X-Caliber 28” 1 in 7” twist, 5R, Cryogenics treated, 5-straight flutes
Savage big varmint contour, X-terminator muzzle brake
Stock: HS Precision Single Shot Varmint
Scope: Steiner T5Xi 5-25x56 FFP
Brass: Norma
Bullet: 230 gr. Sierra Matchking
Primer: Federal 215M
Powder: Retumbo 90.4gr
COAL: 3.75
Velocity: 3020 (LabRadar)
Best group .5 @ 100 meters. (Still working on it.)

 

[HOGSJL]

Old thread, but may provide some newer data...


Rifle: Rem 700
Barrel: Carbon Six 27" 8 twist Remage
Brass: RP
Bullet: Berger 245gr
Primer: Fed 215mag
Powder: 85gr N570
COAL: 3.743" to fit Accurate Mag
Ogive: 2.906"
Velocity: 2832 FPS
Best Group: .6 MOA


Rifle: Rem 700
Barrel: Carbon Six 27" 8 twist Remage
Brass: ADG
Bullet: 215gr Berger
Primer: Fed 215mag
Powder: 88gr N570
COAL: 3.831" to fits Wyatts
Ogive: 3.044"
Velocity: 2998 FPS
Best Group: .5 MOA

 

[platapus]

Anyone have any data with Vihtavuori N565 and a 230gr Berger?

Thanks