338 RUM 338LM 340 wby

[motrapper]

on Noslers site it show the 338 RUM out running the other 2 both in factory ammo and in thier reloading data
Now i hear because the 338LM brass is better you can go outside of the reloading data which is probably true but thats alot of performance to make up in any situation

338 Lapua
225gr. Accubond® & Partition®
Ballistic Coefficient: AB .550, PT .454
Sectional Density: .281
Powder: Viht-N560Charge Weight (in grains)Muzzle Velocity (fps)Load Density86.0

3028 fps91%84.0

2951 fps89%82.0*

2899 fps87%
Powder: RL-19Charge Weight (in grains)Muzzle Velocity (fps)Load Density86.0

3044 fps89%84.0

2973 fps87%82.0*

2936 fps85%

 

[motrapper]

338 Rem Ultra Magnum
225gr. Accubond® & Partition®
Ballistic Coefficient: AB .550, PT .454
Sectional Density: .281
* Most Accurate Load Tested
Powder: RL-22Charge Weight (in grains)Muzzle Velocity (fps)Load Density91.0*

3160 fps90%89.0

3115 fps88%87.0

3070 fps86%
Powder: H1000Charge Weight (in grains)Muzzle Velocity (fps)Load Density100.0

3125 fps99%98.0

3070 fps97%96.0*

3020 fps95%

 

[motrapper]

338 Lapua
250gr. Partition®
Ballistic Coefficient: .473
Sectional Density: .313
* Most Accurate Load Tested

Powder: IMR7828Charge Weight (in grains)Muzzle Velocity (fps)Load Density87.0

2899 fps91%85.0

2829 fps89%83.0*

2762 fps87%
Powder: MagProCharge Weight (in grains)Muzzle Velocity (fps)Load Density90.0

2920 fps91%88.0*

2874 fps89%86.0

2834 fps87%

 

[motrapper]

338 Rem Ultra Magnum
250gr. Partition®
Ballistic Coefficient: .473
Sectional Density: .313
* Most Accurate Load Tested
Powder: Viht-N560Charge Weight (in grains)Muzzle Velocity (fps)Load Density84.5

2947 fps85%82.5

2906 fps83%80.5*

2857 fps81%

Powder: RL-25Charge Weight (in grains)Muzzle Velocity (fps)Load Density91.0*

2990 fps92%89.0

2918 fps90%87.0

2872 fps88%

 

[motrapper]

so is this info from Nosler correct or is it just real conservative for the 338LM Also is the next step up the 338 edge in performance and ease of accquiring componets
thanks

 

[davewilson]

one thing that makes all of the reloading manuals hard to compare not only against each other, but against different cartridges in the same book, is the pressure each is tested at. you'll find some at 52,000 and others bumping the 65,000 mark.i would venture to say that most on here would say the Weatherby would be the slowest, then the RUM, then the Lapua, because of the brass, and yes the Edge probably a tad faster because it holds a bit more powder. each barrel is different, some will be faster than others, but generally speaking, as ranked by potential for speed, the order above is the rule of thumb.