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Rifles, Reloading, Optics, Equipment
Reloading
257 stw blowing primers
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<blockquote data-quote="Cheyenne 1" data-source="post: 706913" data-attributes="member: 9735"><p>The rifle is a 700 remington, pacnor 26 inch barrel, trued, oversized threads sleeved bolt, and a few other things.</p><p>I got the rifle last winter and worked up a load 81 gr R-25 with a 100gr nosler e-tip. it is loaded .090 off the lands and around 3850 fps. All was good. It put 15 shots into a 1 inch square at 100 yards.</p><p> </p><p>So this fall I took it back out and loaded a few bullets to sight in the scope ( I had swapped out the VX-7 for a Vx-3 LR). That is where it all starts. Now it won't shoot a group. And it wants to blow the odd primer out. So I double checked everything thought the brass was getting used up. Sized up some new Remington brass (7mmstw necked down the same way as the last stuff) same thing. Then I realized I had been using federal 215 primers, last year I had been using CCI magnum primers.</p><p> </p><p>Went back and sized up 3 more brass loaded them with CCI primers and only 80 grs of powder, first 2 shots almost touching (at 200 yards) bolt lift was all good, no extracor marks thinking this is all good now, then the third shot blew the primer out and was hardly on the paper.</p><p>Temperature is very similar to last year, same powder. </p><p> </p><p>Any Ideas?? Would like to try something but not sure what.</p><p> </p><p>Thanks</p></blockquote><p></p>
[QUOTE="Cheyenne 1, post: 706913, member: 9735"] The rifle is a 700 remington, pacnor 26 inch barrel, trued, oversized threads sleeved bolt, and a few other things. I got the rifle last winter and worked up a load 81 gr R-25 with a 100gr nosler e-tip. it is loaded .090 off the lands and around 3850 fps. All was good. It put 15 shots into a 1 inch square at 100 yards. So this fall I took it back out and loaded a few bullets to sight in the scope ( I had swapped out the VX-7 for a Vx-3 LR). That is where it all starts. Now it won't shoot a group. And it wants to blow the odd primer out. So I double checked everything thought the brass was getting used up. Sized up some new Remington brass (7mmstw necked down the same way as the last stuff) same thing. Then I realized I had been using federal 215 primers, last year I had been using CCI magnum primers. Went back and sized up 3 more brass loaded them with CCI primers and only 80 grs of powder, first 2 shots almost touching (at 200 yards) bolt lift was all good, no extracor marks thinking this is all good now, then the third shot blew the primer out and was hardly on the paper. Temperature is very similar to last year, same powder. Any Ideas?? Would like to try something but not sure what. Thanks [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
257 stw blowing primers
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