I ran across this last night. I looks as if Ramshot is providing some updated/modern reloading data.
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Since we do not have any specific lab tested data on this caliber, we can provide you with some guideline, based on calculations and information from other sources.
Caliber: 7x57 Mauser. Barrel length: 24” Pressure spec: <56565 Psi/3900 Bar (CIP) original
Bullet weight: 120 grains. Start load: 48.6 grains (ca 2780 Fps). Maximum load: 54.0 grains (ca 3140 Fps). LD ca 106%
Bullet weight: 140 grains. Start load: 46.8 grains (ca 2600 Fps) Maximum load: 52.0 grains (ca 2950 Fps). LD ca 102%
Bullet weight: 150-154 grains. Start load: 43.7 grains (ca 2450 Fps) Maximum load: 49.5 grains (ca 2750 Fps).
Bullet weight: 160 grains. Start load: 43.7 grains (ca 2375 Fps) Maximum load: 48.50 grains (ca 2675 Fps).
Bullet weight: 175 grains Start load: 42.0 grains (ca 2300 Fps) Maximum load: 47.0 grains (ca 2650 Fps).LD ca 99%
"An archer sees how far he can be from a target and still hit it, a bowhunter sees how close he can get before he shoots." It is certainly easy to use that same line of thinking with firearms. -- Unknown