StaBall HD vs. RS Magnum

[hemiford]

There appears to be no RS Magnum anywhere, maybe it's sitting right next to the RL-26.

Anyway, here's the question, does Staball HD have about the same energy as Magnum,
same muzzle velocities ? I know the burn rate is close, but that's not the question here.

 

[bergara0256]

Watching

 

[Hugnot]

More on StaBall HD & the 6.5-06

I shot some groups & got some Magneto Speed chrony results




Staball HD is a ball powder. It contains nitro glycerin that would provide added "energy". Ram Shot Magnum is also a ball powder containing nitro glycerin. I would guess the energy provided by both would be equal per pound per square inch. My 6.5-06 loads fill the case to 100%. using Staball HD, I could probably boost pressures using R-S Magnum, but I would expect energy per unit weight (heat & light) would be equal.

https://hodgdonpowderco.com/wp-content/uploads/2023/04/2022-winchester-powders-sds-rev1.pdf

 

[ARlife4me]

I just use the Hodgdon reloading site and checkmark staball hd and magnum to generate results bases on cartridge/bullet selections.

 

[entoptics]

Gathered this up from the Hodgdon website.

Cartridge

Bullet

Powder

C1 (gr)

V1 (fps)

P1 (PSI)

PSI/gr

fps/gr

C2 (gr)

V2 (fps)

P2 (PSI)

PSI/gr

fps/gr

6.5 PRC

147 ELDM

RS Mag

55.2​

2690​

56700​

1027​

48.7​

61.3​

2937​

63000​

1028​

47.9​

6.5 PRC

147 ELDM

SB HD

53.0​

2597​

45300​

855​

49.0​

59.5​

2919​

61400​

1032​

49.1​

7 Rem Mag

180 VLD

RS Mag

63.3​

2629​

54500​

861​

41.5​

70.3​

2886​

60600​

862​

41.1​

7 Rem Mag

180 VLD

SB HD

64.7​

2649​

46800​

723​

40.9​

71.3​

2895​

59600​

836​

40.6​

7 Rem Mag

175 Part

RS Mag

63.4​

2647​

54400​

858​

41.8​

70.4​

2879​

60500​

859​

40.9​

7 Rem Mag

175 Part

SB HD

65.4​

2639​

46700​

714​

40.4​

72.1​

2898​

59500​

825​

40.2​

7 Rem Mag

166 A-tip

RS Mag

67.5​

2784​

46500​

689​

41.2​

73.0​

3049​

59300​

812​

41.8​

7 Rem Mag

166 A-tip

SB HD

67.5​

2843​

49200​

729​

42.1​

72.8​

3054​

59600​

819​

42.0​

300 Win Mag

190 BTSP

RS Mag

77.4​

2817​

57100​

738​

36.4​

86.0​

3117​

63500​

738​

36.2​

300 Win Mag

190 BTSP

SB HD

74.0​

2693​

47100​

636​

36.4​

81.5​

2946​

60200​

739​

36.1​

300 Win Mag

220 HPBT

RS Mag

72.8​

2580​

57100​

784​

35.4​

80.9​

2868​

63400​

784​

35.5​

300 Win Mag

220 HPBT

SB HD

71.0​

2547​

47800​

673​

35.9​

78.4​

2807​

62500​

797​

35.8​

Couple of these data points used different primers, but otherwise appear to be a like for like comparison with bbl length and bullet.

Looks like there's not a whole lot of difference between the two in terms of pressure per grain of powder and velocity per grain of powder, particularly in the big 30.

 

[ARlife4me]

Looks 7mag has the advantage on speed with hd.

 

[idcwby]

Staball HD is supposed to be temperature stable. I don't think Magnum is. That would be something to consider.