Other 25 caliber wildcats are not this fl exible. My .257 Roberts is a 24" pre 64 Win with an identical to stock barrel profile, HART barrel in .257 Ackley improved 40°. .257 has loads for 110 grain bullets from 2800 to 3300 fps, with bullets having a ballistic coefficient (BC) of .39 the .30-06 has loads for 110 grain bullets from 2900 to 3400 fps, with BC of .25 and .29 Since I have actually wrote the code for the ballistics calculator in Gun Log, let me illustrate the significance of the BC..257 Weather Mag Ballistics Charts & Data. Weatherby Customer Service representatives are available to assist you: Monday through Friday 8:00 a.m. to 5:00 p.m. (MDT) Visitor/Service Center 9:00 a.m. to 4:00 p.m. (MDT) Customer Service (307) 675-7840. The following data was taken from various sources including reloading manuals and the online Ballistics Calculator provided by BigGameInfo. AccuBond CT at 3100 fps F 2.780" LOAD DEN SITY (V OLUME) P OWDER CHG. BARREL Tw ist B.C. 257 Roberts; Sort by. Origin of the 257 Roberts. 2.5 in (64 mm). Hornady 257 Roberts Ammunition Superformance H81353 117 Grain SST 20 rounds. 257 Roberts Trajectory. The boattail design enhances accuracy and an alloyed lead core provides increased weight retention for deeper penetration. The .257 Roberts dates way back to around the 1920's but many still use it to this day. Ballistics Charts. O.A.C.L. Steel Core 223 Ammo For single-use ammo in your .223 Rem. 25 WSSM, 85 gr. Partition, or the 110 gr. Note: For an expanded version of this table showing more loads, including British, European, wildcat, obsolescent American and proprietary calibers, see the Expanded Rifle Trajectory Table . The 257 Weatherby Magnum, however, adds enough velocity that it might stabilize a 125- to When autocomplete results are available use up and down arrows to review and enter to select, or press tab to cycle through suggested products based on autocomplete results. All actions have minimal dimensions for the cartridges they chamber, permitting a trim overall profile that reduces weight by as much as two pounds. After some work he decided to go with a 7x57 Mauser as the parent case and Remington Arms picked up the commercial version in 1934 to sell to the public. You may want to look at the 25 Gibbs or 25-06 improved if you want to stay on the '06 case. Try other filters. (.257") MAXIMUM S.A.A.M.I. The 257 Improved is all that the 257 Roberts is—and a bit more. cartridges - for hunting, the .257 Ack. 257 Roberts Ballistics. I use this caliber on deer and I shoot 115 BST. I'm open to any and all suggestions. powder: 110 Gr. Bushnell LRF Ballistic Modes A-J Ballistic Charts A-J Dial Reference Charts ... Winchester .257 dia. Find information and Nosler products that are offered in your favorite cartridge: Nosler Cartridge Data By Nosler Inc Toggle menu. PP at 2780 fps C Winchester .257 dia. Product Store Price PPR; No deals found for this data entry. *To properly chamber a rifle for .257 Ackley Improved cartridges, a gunsmith must set the original barrel back about 0.004”. The 257 Roberts is one of two .25 caliber cartridges used for daily production testing in the Nosler Ballistics Lab. The 6.5-.284 Norma another winner. The .257 is the ideal vessel for driving the 115 grain Ballistic Tip and 117 grain SST out to longer ranges with devastating results. 25 WSSM, 115 gr. Pretty much .25-06 velocity. One of its advantages, Ackley noted, is the fact that 257 Roberts factory ammunition can be used in an improved rifl e if necessary. WATER Ballistic Tip ® C T® Ballistic Silvertip® V er sio n 8.0 24" Lilja P R IM ER TY P E P artitio n ® 0.453 0.453 257 Roberts - 115 grain 25 Cal. Explains how to make these calculations and produces charts and graphs that compare various firearm cartridges and firearms. Want to see your products here? Gunfight Friday: .257 vs. .243. Either the 100 gr. First off I'm new to the whole AR thing. Wikiarms.com Live Prices. Imp. 80 Barnes TTSX B25780TTSX $99 .316 3870 3561 3274 3005 2753 2514 2661 2253 1904 1605 1346 1123 1.9 2.6 0.0 -6.4 -17.4 M 100 Spitzer G257100SR $44 .256 3500 3091 2718 2375 2057 1766 2721 2122 1641 1253 940 693 3.0 3.9 0.0 -10.1 -28.5 To view this Reloading Guide in a PDF format, click the red button below. BT at 3330 FPS average, via both the 'ol Oehler & MagnetoSpeed chronographs - impressive, mild, and sub 1/2 MOA 5-shot groups via PacNor #3 … Winchester Ammunition manufactures quality, performance rifle ammo for hunting, sport- and recreational shooting.
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