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Rifles, Reloading, Optics, Equipment
Reloading
ball vs stick powders
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<blockquote data-quote="Ridge Runner" data-source="post: 378459" data-attributes="member: 951"><p>I shoot WC872 exclusively in my 7mm AM, it is temp sensative, maybe more so because of the volume of the charge (110 gr) I can tell you on a 40-50 degree day that 110 gr will send a 160 nosler through the screens of the pact at 3575 fps</p><p>if its 80° that same load will clock 3730 fps. and after the second shot you won't get the bolt open for a few minutes.</p><p> now on a 50 degree day if you let the round set in a warm chamber while changing targets or adjusting the chrony, it'll run 3650 fps. </p><p>all powders are temp sensative somewhat, double based or ball powders moreso, due to it having nitroglycerine in its make-up. Since most of my shooting with the long range cartridges is done during fall I can work around the temp. sens. thing. I can keep my loadwork and practice sessions close to the same temps as my hunting.</p><p> My problem with RE-22 is on top of the temp sensativity it has very bad lot to lot varience, I just got tired of reworking my load for my 6.5 gibbs every time I opened a new jug of powder.</p><p> I have read no data to back this up but this has been my own experiences. my 6.5 gibbs has went from 3340 fps with 61 gr re-22 and a 140 berger to 3200 under the same conditions with the same load just a different jug of powder.</p><p>RR</p></blockquote><p></p>
[QUOTE="Ridge Runner, post: 378459, member: 951"] I shoot WC872 exclusively in my 7mm AM, it is temp sensative, maybe more so because of the volume of the charge (110 gr) I can tell you on a 40-50 degree day that 110 gr will send a 160 nosler through the screens of the pact at 3575 fps if its 80° that same load will clock 3730 fps. and after the second shot you won't get the bolt open for a few minutes. now on a 50 degree day if you let the round set in a warm chamber while changing targets or adjusting the chrony, it'll run 3650 fps. all powders are temp sensative somewhat, double based or ball powders moreso, due to it having nitroglycerine in its make-up. Since most of my shooting with the long range cartridges is done during fall I can work around the temp. sens. thing. I can keep my loadwork and practice sessions close to the same temps as my hunting. My problem with RE-22 is on top of the temp sensativity it has very bad lot to lot varience, I just got tired of reworking my load for my 6.5 gibbs every time I opened a new jug of powder. I have read no data to back this up but this has been my own experiences. my 6.5 gibbs has went from 3340 fps with 61 gr re-22 and a 140 berger to 3200 under the same conditions with the same load just a different jug of powder. RR [/QUOTE]
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