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Rifles, Reloading, Optics, Equipment
Reloading
Calculating OAL
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<blockquote data-quote="Bart B" data-source="post: 738492" data-attributes="member: 5302"><p>Andy, seems to me your chamber's got a long leade, so your best bet for those 155's is to set either one out as far as you can, then maybe add one grain to published loads for it. I doubt there's any difference between either 155 from Sierra; the newer one has a higher BC but that's all in my opinion.</p><p></p><p>IF your barrel's got a 1:12 twist, you may be in great shape if you load 190's with 42 grains of IMR4064 or 44 of IMR 4320. That longer bullet may just be the ticket to great accuracy in that long leade you've got.</p><p></p><p>David Tubb shot Sierra 250-gr. HPMK's in his .308 for long range matches one year. His 1:8 twist barrel had an extra long leade/throat so he could get enough IMR4350 in the case to shoot it out at 2150 fps. Bucked the wind very, very well. Very accurate, too.</p></blockquote><p></p>
[QUOTE="Bart B, post: 738492, member: 5302"] Andy, seems to me your chamber's got a long leade, so your best bet for those 155's is to set either one out as far as you can, then maybe add one grain to published loads for it. I doubt there's any difference between either 155 from Sierra; the newer one has a higher BC but that's all in my opinion. IF your barrel's got a 1:12 twist, you may be in great shape if you load 190's with 42 grains of IMR4064 or 44 of IMR 4320. That longer bullet may just be the ticket to great accuracy in that long leade you've got. David Tubb shot Sierra 250-gr. HPMK's in his .308 for long range matches one year. His 1:8 twist barrel had an extra long leade/throat so he could get enough IMR4350 in the case to shoot it out at 2150 fps. Bucked the wind very, very well. Very accurate, too. [/QUOTE]
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Calculating OAL
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