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New-Rifle-Project-has-been-changed
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<blockquote data-quote="Buffalobob" data-source="post: 145769" data-attributes="member: 8"><p>Wildcat</p><p></p><p>The performance levels of the 7AM and the 30-378 ae very similiar when dealing with shooting animals. Naturally the larger heavier 30 cal bullets will have an advantage at distances beyond 1500 yards.</p><p></p><p>I am not sure such a high volume case would be a great benchrest cartridge because you have to shoot so fast that heating up the throat will be a problem. Of course I don't shoot benchrest so that is just speculation.</p><p></p><p>Concerning Norma/Weatherby brass I would say that if you push it to the limits then you pretty much know that the brass is "disposable" just like the powder, primer and bullet. If you run more reasonable loads it will be last longer. </p><p></p><p>Just my limited experience but the chamber is pretty critical to the accuracy of a weatherby case. A big sloppy factory chamber will lead to difficulties in obtaining desired accuracy. A tight chamber with a special throat cut for the bullet of choice will give you a better chance at being pleased with the accuracy. There are great tales and reams of advice about headspacing off of the shoulder and not the belt. My general belief is that if the chamber is cut correctly then the belt headspace works just fine. Of course if you let the shoulder grow so some cases are head spaced off of the shoulder and some are heaed spaced off of the belt then you may have a problem. In a tight cut chamber with no freebore you will not be able to shoot factory ammo. Nor will you be able to shoot someone elses once fired cases, unless their chamber is smaller than yours.</p></blockquote><p></p>
[QUOTE="Buffalobob, post: 145769, member: 8"] Wildcat The performance levels of the 7AM and the 30-378 ae very similiar when dealing with shooting animals. Naturally the larger heavier 30 cal bullets will have an advantage at distances beyond 1500 yards. I am not sure such a high volume case would be a great benchrest cartridge because you have to shoot so fast that heating up the throat will be a problem. Of course I don't shoot benchrest so that is just speculation. Concerning Norma/Weatherby brass I would say that if you push it to the limits then you pretty much know that the brass is "disposable" just like the powder, primer and bullet. If you run more reasonable loads it will be last longer. Just my limited experience but the chamber is pretty critical to the accuracy of a weatherby case. A big sloppy factory chamber will lead to difficulties in obtaining desired accuracy. A tight chamber with a special throat cut for the bullet of choice will give you a better chance at being pleased with the accuracy. There are great tales and reams of advice about headspacing off of the shoulder and not the belt. My general belief is that if the chamber is cut correctly then the belt headspace works just fine. Of course if you let the shoulder grow so some cases are head spaced off of the shoulder and some are heaed spaced off of the belt then you may have a problem. In a tight cut chamber with no freebore you will not be able to shoot factory ammo. Nor will you be able to shoot someone elses once fired cases, unless their chamber is smaller than yours. [/QUOTE]
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