Berger Load Data: 215 Hybrid / .300 RUM

[B-P-UU]

Emailed Berger and they provided the table below. thought I would share for others interested. For the guys using this combo; how do the loads listed below compare to what you are running?

Table didn't load correctly, but it is still discernible.

300 Rem Ultra Magnum
(COAL - 3.600"; Barrel Length - 26")
Bullet
Powder
Start Load
Approximate Start Velocity
Max Load
Approximate Max Velocity
Fill Ratio​

215 Grain
RETUMBO

81.0
2607
90.2
2877
100%​

215 Grain
RE-25

75.5
2604
84.0
2845
94%​

215 Grain
NORMA MRP 2

77.5
2601
86.0
2862
95%​

215 Grain
Ramshot Magnum

79.0
2592
87.8
2871
91%​

215 Grain
VIHT N170

80.5
2531
89.5
2812
101%​

215 Grain
H1000

78.0
2580
86.5
2845
97%​

215 Grain
AA MAGPRO

76.5
2599
85.3
2878
89%​

215 Grain
IMR 7828 SSC

73.0
2606
81.3
2869
88%​

215 Grain
RE-22

73.0
2602
81.3
2852
89%​

215 Grain
NORMA MRP

73.5
2613
81.5
2852
87%​

215 Grain
H50BMG

86.5
2537
96.0
2862
105%​

215 Grain
H4831

72.0
2550
80.3
2805
92%​

 

[BULLBLASTER]

I shoot 215 s from my sendero atbergers listed max of 90.2 retumbo. Oal of 3.800 velocity average 2948 and standard deviation of 8. Shoots great. Fairly mild load but I see no reason to push faster with my accuracy.

 

[jrsolocam]

Not sure but thinking Berger's emailed load data comes straight from QL. I have QL and use it a lot. My experience has been I can push bullets much faster than their load data. This is in several rifles, 6.5 to .308. But in the essence of safety, use their start loads and work up.

 

[RTK]

My experience has been I can push bullets much faster than their load data. This is in several rifles, 6.5 to .308. But in the essence of safety, use their start loads and work up.

+1.

 

[birddog67]

My 300 ultra load
Stock sendero with brake and jewel trigger
215 Berger VLD
Remington brass trimmed
Neck sized .334 bushing
Federal mag primer
H1000 88.9 no presher sizes
Base to ogive 3.898
Velocity 2980 I could go more but why ?

Shoots lights out gun)

 

[D.Camilleri]

I load 93.0 grains of Retumbo with 215's with a COAL of 3.670 for a corrected velocity of 3025 with a 26" factory tube.

 

[Toptuna]

I can't find the hybrids anywhere

 

[D.Camilleri]

Keep looking and buy them when you stumble onto them. Last box I got was from powder valley when I got a tip they has some in stock. I also found some 300 gr for my 338 last time I was at sportsman's warehouse in Bozeman.

 

[B-P-UU]

I load 93.0 grains of Retumbo with 215's with a COAL of 3.670 for a corrected velocity of 3025 with a 26" factory tube.

Thanks for the info D.Camilleri... I will be using Retumbo as well. Did you go beyond 93.0 gr. of Retumbo or was that the max you tried?

 

[D.Camilleri]

I had an accuracy node at 92 grs, basically one hole, went to 92.5 and the group jumped to 1.5, tried 93 and it was back to under .5 with only a light ejector mark. I took the load out to 700 yards and it shot well, so I called it good.