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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Weatherby 270 mag can't hit the broad side of a barn
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<blockquote data-quote="Trickymissfit" data-source="post: 1029317" data-attributes="member: 25383"><p>I have a 270 mag, and just love it. Still would rather have had a 7mm WBY. mag. Mine shoots sub MOA with several factory loads. The only hand loads I've done shot about .70" five shot groups with about three or four minutes between shots (long enough to take a few drags off a Padrone). Those thin barrels heat up fast, and really open groups. The rifles were designed to be shot with a cold bore.</p><p> </p><p>The Laser Mark is at least 15 years old, and maybe 20 years old. I'd be doing a serious look at the bedding. I've owned two wood stock Weatherbys, and one is very, very stable, while the other opened up right around the receiver. I'd be checking to see if the stock has moved around. Check the recoil lug area, as it maybe bad. </p><p> </p><p>Running hundred grain bullets at the velocities this round will generate may have seriously fouled the barrel. I've had pretty good luck with 150 grain bullets. Avoid the very high B.C. bullets as the twist is slightly slow for them in my book. Avoid the Hornaday SST's from 130 grain and lighter. The velocity is way too high for them. I had them explode in flight. Have a box of 150 grain bullets to try, and think they'll be slow enough. AA3100 powder is what you should be looking for. Use a Federal mag primer (very hot). 7828 works very well too. Try for something like 69K PSI in chamber pressure. Seat the bullet as far out as you can. </p><p>gary</p></blockquote><p></p>
[QUOTE="Trickymissfit, post: 1029317, member: 25383"] I have a 270 mag, and just love it. Still would rather have had a 7mm WBY. mag. Mine shoots sub MOA with several factory loads. The only hand loads I've done shot about .70" five shot groups with about three or four minutes between shots (long enough to take a few drags off a Padrone). Those thin barrels heat up fast, and really open groups. The rifles were designed to be shot with a cold bore. The Laser Mark is at least 15 years old, and maybe 20 years old. I'd be doing a serious look at the bedding. I've owned two wood stock Weatherbys, and one is very, very stable, while the other opened up right around the receiver. I'd be checking to see if the stock has moved around. Check the recoil lug area, as it maybe bad. Running hundred grain bullets at the velocities this round will generate may have seriously fouled the barrel. I've had pretty good luck with 150 grain bullets. Avoid the very high B.C. bullets as the twist is slightly slow for them in my book. Avoid the Hornaday SST's from 130 grain and lighter. The velocity is way too high for them. I had them explode in flight. Have a box of 150 grain bullets to try, and think they'll be slow enough. AA3100 powder is what you should be looking for. Use a Federal mag primer (very hot). 7828 works very well too. Try for something like 69K PSI in chamber pressure. Seat the bullet as far out as you can. gary [/QUOTE]
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Weatherby 270 mag can't hit the broad side of a barn
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