![]() ![]() Test-lots of bullets that don’t nip quarter-minute can send the entire batch to the “seconds” bin. 0003 and limits bullet weight variation to. Sierra, renowned for match-winning target bullets, keeps jacket thickness within. 1 percent copper can cause hard spots.) Jacket and core must be held to tight tolerances for the best accuracy. (Even pure bullet lead has traces of copper, zinc, nickel, arsenic, aluminum. “Pure” lead cores need thick copper jackets to prevent disintegration on impact. Sierra uses three alloys for rifle bullets, with antimony proportions of 1.5, 3 and 6 percent. A little antimony makes a big difference 6 percent is about the limit. Cores of ordinary hunting bullets have a dash of antimony to make them harder (commonly 2.5 percent). 348 Winchester.īullet cores are usually cut from lead wire extruded from bar stock in appropriate diameters, then annealed to prevent expansion during forming. But some Originals remain for big-bore and obsolete rounds like the. The Barnes label, which dates to 1939, now is best known for its all-copper Triple Shock bullets. 049-inch thick, depending on the application. Copper fouling made frequent bore cleaning a must.īarnes “Original” bullets, from. They required deep seating and an eye to pressures. With nose cavities that initiated expansion, these thick jackets made Bitterroots long for their weight, heavy for their caliber. The high ductility of the unalloyed copper kept it from shattering easily on big bone or in heavy muscle. 060 thick appeared early on Bitterroot Bonded Core bullets. ![]() Softer, almost pure-copper jackets up to. While Nosler stayed with a 90-10 alloy for its Partition bullets turned on screw machines before 1970, most bullet-makers now favor jackets of 95 percent copper and 5 percent zinc. When experiments at Frankfort Arsenal showed gilding metal stood up to high velocities, it became standard jacket material for hunting and target bullets. In 1922 Western provided Palma Match ammunition with 180-grain Lubaloy-coated bullets. But Western Cartridge Company’s Lubaloy jacket, comprising 90 percent copper, 8 percent zinc and 2 percent tin worked well. Gilding metal (90 percent copper, 10 percent zinc) was first thought too soft for the friction generated by 150-grain bullets in. After the Great War, cupro-nickel, of 60 percent copper and 40 percent nickel, became the jacket of choice. Jackets and coresĪ century ago, bullets were just getting used to high speed. Such bullets are expensive, partly because they cost a lot to engineer and produce, partly because they’re less versatile than traditional all-purpose softpoints, so don’t sell in wholesale quantities (market frenzy of 2013 aside). Those built to blast through tough muscle and bone wind up under the far-side skin with negligible weight loss, or punch through to sail into the hills beyond. Those designed specifically for flat flight–VLD (very low drag) or LR (long range, but you guessed that)-deliver chalk-line arcs. They’re more accurate, on balance, than they were in my youth. ![]() IĪs cartridge lists have become scrolls, bullets have improved. 280 Ackley simply because I’ve not yet killed an elk with mine. 270 WSM and the 6.5/284 with equally lethal results and would probably pick the. But I mustered a measure of charity and said it truly didn’t matter. Having struck out in the Wyoming elk tag draw, I could have told him not to fret about loads when the luckless have no license. Well, I don’t know if there’s something better. Your only contact with a live elk is the little missile you send its way. “Or is there something better?” he concluded. For each, his bullet of choice was a mid-weight bullet. What would you pick from this list?” Mercifully, he listed only three options: 6.5/284. My guide tells me to come ready for 400-yard shots. One missive, just received: “I drew a Wyoming elk tag and plan to hunt the Bridger-Teton units. 270 is all that’s needed to shoot elk, the proliferation of cartridges in this class, with a tsunami of new bullets may leave you sleepless with indecision.Rather than limit their pillow talk to elk cartridges, some insomniacs write me. So too Jack O’Connor, whose wife Eleanor found her 7×57 deadly with handloaded 160-grain softpoints at 2,650 fps.Įven if you believe the. An Idaho lodge proprietor who guided many elk hunters was also sweet on the. Bowman favored the 150-grain bullet, observing it killed more quickly than the factory’s 175.Ī Colorado game warden whose job included shooting nuisance elk used a. Part of his pitch for Remington’s big 7 was that it didn’t belt you like a. He said more were hit badly by hunters using magnum rounds because these fellows didn’t shoot as well as their compatriots with rifles that didn’t kick as hard. Les Bowman, the Cody, Wyoming, outfitter who had a hand in bringing us the 7mm Remington Magnum cartridge, saw a lot of elk shot. ![]()
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