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Antelope Hunting
25-06 vs 257 wby
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<blockquote data-quote="VinceMule" data-source="post: 2485193" data-attributes="member: 122164"><p><strong>Short freebore in the 257 Weatherby gains you velocity and accuracy. Bullets jumping .300 getting started crooked can never be a good thing. The Double radius on the weatherby ******* the issue of doughnuts forming with the bullet seated deeper in the case.</strong></p><p><strong></strong></p><p><strong>I had a reamer ground by PTG years ago with the neck length of 264 Winchester brass formed to 257 Weatherby brass. The 264 brass formed the double radius perfectly in the necked down brass in one pass through the 257 Weatherby full length sizer. There was no down side in using the Winchester brand of brass to form the weatherby. I could have used the weatherby length neck in my chamber, and cleaned the chamber neck with a 38 caliber pistol brush to remove carbon build up. I did not have a bore scope to monitor carbon build up in the neck at that point in my life.</strong></p><p><strong></strong></p><p><strong>100's in the 257 Weatherby at 3850 is real world at the accuracy node using R#22 with Fed 215's, 85-87g bullets are in the area of 4130 fps using R#19 and/or IMR 4831 with 26" barrels. The old AA3100 powder is magic for the 85-87g bullets at 4100+ with tiny groups with all shots touching at 100 yards.</strong></p><p><strong></strong></p><p><strong>A pard is shooting Rock Chucks with a 12T, 30" barrel, R#22 at 4000 fps with the 100g bullets. I hunted coyotes with one of my rifles, hair floated down for minutes as the coyote was just about shot in half with 100g speer BTSP with a MV of 3850. Full grown Rock chucks were blown for 30' with just the right angle.</strong></p></blockquote><p></p>
[QUOTE="VinceMule, post: 2485193, member: 122164"] [B]Short freebore in the 257 Weatherby gains you velocity and accuracy. Bullets jumping .300 getting started crooked can never be a good thing. The Double radius on the weatherby ******* the issue of doughnuts forming with the bullet seated deeper in the case. I had a reamer ground by PTG years ago with the neck length of 264 Winchester brass formed to 257 Weatherby brass. The 264 brass formed the double radius perfectly in the necked down brass in one pass through the 257 Weatherby full length sizer. There was no down side in using the Winchester brand of brass to form the weatherby. I could have used the weatherby length neck in my chamber, and cleaned the chamber neck with a 38 caliber pistol brush to remove carbon build up. I did not have a bore scope to monitor carbon build up in the neck at that point in my life. 100's in the 257 Weatherby at 3850 is real world at the accuracy node using R#22 with Fed 215's, 85-87g bullets are in the area of 4130 fps using R#19 and/or IMR 4831 with 26" barrels. The old AA3100 powder is magic for the 85-87g bullets at 4100+ with tiny groups with all shots touching at 100 yards. A pard is shooting Rock Chucks with a 12T, 30" barrel, R#22 at 4000 fps with the 100g bullets. I hunted coyotes with one of my rifles, hair floated down for minutes as the coyote was just about shot in half with 100g speer BTSP with a MV of 3850. Full grown Rock chucks were blown for 30' with just the right angle.[/B] [/QUOTE]
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