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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Anyone own a 7mm 300 Win Mag?
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<blockquote data-quote="Broz" data-source="post: 434508" data-attributes="member: 7503"><p>Sid, I don't hardly ever shoot groups at 100. I prefer 200 or more as I feel it gives the bullet time to stabilize. I will take a .5 moa group at 300 to a one hole group at 100 any day. Just my personal preferance. That said this rifle will shoot 180 bergers into 1 1/2" at 300 on a very regular basis, and some times better.</p><p> </p><p>The gun was not throated specially for bergers, but it has a long throat, this worked out well. I had the bullets close to the lands at first, but decided to back them in to see how they shoot if they would fit in the box. That came out to be .115" off the lands. That is where there are now and shoot awesome. So I don't feel anyone can say that the bergers have to be on the lands. I have seen them shoot in many rifles I own from .005" in the lands, to this rifle at .115" off. I would just use the Berger seating method and see what your rifle likes.</p><p> </p><p>We were not seeing a terable amount of run out with the RP brass, but the brass was old and I am very fond of RWS and Lapua brass for the 300's. So we changed to new RWS brass. After the first firing we did see noticably less run out, probably .002~.003" less on average. </p><p> </p><p>I am not suprised you are considering a little less powder charge and I doubt if you back off a grain if it will be a negative affect on accuracy. Please remember if you ever go to RWS brass you will need to back off probably 4 gr but I feel you will see very close to the same velocity as you are now.</p><p> </p><p>Hope this helps.</p><p> </p><p>Jeff gun)gun)</p></blockquote><p></p>
[QUOTE="Broz, post: 434508, member: 7503"] Sid, I don't hardly ever shoot groups at 100. I prefer 200 or more as I feel it gives the bullet time to stabilize. I will take a .5 moa group at 300 to a one hole group at 100 any day. Just my personal preferance. That said this rifle will shoot 180 bergers into 1 1/2" at 300 on a very regular basis, and some times better. The gun was not throated specially for bergers, but it has a long throat, this worked out well. I had the bullets close to the lands at first, but decided to back them in to see how they shoot if they would fit in the box. That came out to be .115" off the lands. That is where there are now and shoot awesome. So I don't feel anyone can say that the bergers have to be on the lands. I have seen them shoot in many rifles I own from .005" in the lands, to this rifle at .115" off. I would just use the Berger seating method and see what your rifle likes. We were not seeing a terable amount of run out with the RP brass, but the brass was old and I am very fond of RWS and Lapua brass for the 300's. So we changed to new RWS brass. After the first firing we did see noticably less run out, probably .002~.003" less on average. I am not suprised you are considering a little less powder charge and I doubt if you back off a grain if it will be a negative affect on accuracy. Please remember if you ever go to RWS brass you will need to back off probably 4 gr but I feel you will see very close to the same velocity as you are now. Hope this helps. Jeff gun)gun) [/QUOTE]
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Anyone own a 7mm 300 Win Mag?
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