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Long Range Hunting & Shooting
Done with 215 Bergers
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<blockquote data-quote="TSH" data-source="post: 2072845" data-attributes="member: 30378"><p>A couple years ago I took my comp rifles and shotmarker to my deer lease to do some testing at 1000 yards post hunting. The picture is intended to show the backstop angle and the firmness of the soil, it is pretty hard high desert type of hard pan dirt, as you can see in the foreground. The target is in the red circle. I tested multiple rifles, all chambered in 284W and shooting Berger 7mm 180 hybrid target, all the barrels were either Bartlein or Brux and all the bullets were pointed.</p><p></p><p>On a whim I gathered up some bullets from behind the target and put them in my pocket. When I got home I did some examining, about half the bullets were in one piece, beat up and dented a bit but still one solid piece, and the other half were broke and bent at the front of the bearing surface and much more beat up. Of course I didn't think much of it, I just assumed they hit rocks instead of dirt. Upon further examination, every bullet that was intact had 5 grooves and every broken one had 4 grooves. This is important because the 4 groove Brux barrels are .001" tighter bore than the bartlein 5 groove barrels. Brux 7mm barrels are .276" diameter bore and Bartlein 7mm is .277".</p><p></p><p>I read somewhere, maybe this thread, that Berger uses .0005" thinner jackets on its hunting bullets. I have to think if that is true, then a .001" deeper cut by the grooves should make a significant difference in how a bullet performs when hitting an animal.[ATTACH=full]239492[/ATTACH]</p></blockquote><p></p>
[QUOTE="TSH, post: 2072845, member: 30378"] A couple years ago I took my comp rifles and shotmarker to my deer lease to do some testing at 1000 yards post hunting. The picture is intended to show the backstop angle and the firmness of the soil, it is pretty hard high desert type of hard pan dirt, as you can see in the foreground. The target is in the red circle. I tested multiple rifles, all chambered in 284W and shooting Berger 7mm 180 hybrid target, all the barrels were either Bartlein or Brux and all the bullets were pointed. On a whim I gathered up some bullets from behind the target and put them in my pocket. When I got home I did some examining, about half the bullets were in one piece, beat up and dented a bit but still one solid piece, and the other half were broke and bent at the front of the bearing surface and much more beat up. Of course I didn’t think much of it, I just assumed they hit rocks instead of dirt. Upon further examination, every bullet that was intact had 5 grooves and every broken one had 4 grooves. This is important because the 4 groove Brux barrels are .001” tighter bore than the bartlein 5 groove barrels. Brux 7mm barrels are .276” diameter bore and Bartlein 7mm is .277”. I read somewhere, maybe this thread, that Berger uses .0005” thinner jackets on its hunting bullets. I have to think if that is true, then a .001” deeper cut by the grooves should make a significant difference in how a bullet performs when hitting an animal.[ATTACH type="full"]239492[/ATTACH] [/QUOTE]
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