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257 Roberts Ballistics Chart

257 Roberts Ballistics Chart - The.257 wbm is a great long range deer round. *load data for this cartridge was tested at the standard saami pressure level—not the higher +p pressure levels listed in some manuals. Velocity, energy, short/long trajectory for.257 roberts caliber rounds. The ammunition makers of the day did not want to take chances with chamber pressure, so it was generally only loaded to about 51,000 psi—much lighter than. I tried the same powder with hornady 117 sst and groups open up to almost 2.0. Web the following ballistics tables show a side by side comparison of the 257 roberts vs 243 winchester based on bullet weight and performance metrics including velocity, energy, usage and recoil. Web ballistics charts & data for the.257 roberts rifle. It will reach out there. Web here are some specifications of interest to reloaders: Barrel rifling diameter, from which calibers derive their designations, is 0.250 in or 6.35 mm.

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Most Major Manufacturers Including Remington, Winchester, Savage, Ruger, Kimber And Several Others Have Offered Rifles In This Chambering.

Web hornady list two loads for the.257 roberts, the 117 grain interlock btsp at 2780fps and the 117 grain sst as a superformance load at 2940fps. Velocity is an important consideration when comparing any two cartridges. Web first,.257 roberts was loaded lighter than necessary. Because most factory loads for the.257 roberts are loaded light, the reloader with a strong.257 rifle can do very well, indeed.

You're Looking At A 7Mm Mauser Necked Down To.257 And A 7Mm Remington Necked Down To.

I tried the same powder with hornady 117 sst and groups open up to almost 2.0. When it comes to selecting between the 257 roberts or 6.5 creedmoor, several significant factors should be considered. Bullet diameter.257, maximum col 2.780, maximum case length 2.233, map 45,000 cup (50,000 cup +p). The ammunition makers of the day did not want to take chances with chamber pressure, so it was generally only loaded to about 51,000 psi—much lighter than.

Web Nominal Bullet Diameter Of The.257 Roberts Is.257 Inches.

*load data for this cartridge was tested at the standard saami pressure level—not the higher +p pressure levels listed in some manuals. Web in the velocity department, the.257 roberts is really two different cartridges. Web this data was developed to the 257 roberts +p pressure level of 58,000 psi, and should only be used in modern rearms and +p cases designed for these pressures. Web ballistics charts & data for the.257 roberts rifle.

The.257 Wbm Is A Great Long Range Deer Round.

For more center fire rifle ballistics, check out our in depth chart. Velocity, energy, short/long trajectory for.257 roberts caliber rounds. Web the.257 roberts, affectionately nicknamed bob, is an excellent deer cartridge that offers modest recoil and is capable of taking game in open country where longer shots are common. Web ballistics and drop for the.257 roberts.

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