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Rifles, Reloading, Optics, Equipment
Reloading
Finding "sweet spot" with bullet seating adjustment
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<blockquote data-quote="Muddyboots" data-source="post: 1686202" data-attributes="member: 63925"><p>Since I am dealing with factory rifles or replacement stocks with AICS mags, I usually start with the MAX COAL (not ogive) for reliable magazine feed whether box etc. It makes no sense to find a really accurate round 0.010 off the lands if you can't feed anything than 0.030 off the lands due to COAL limitations UNLESS you shoot single shot. I do load to the ogive measurement to fit the magazines COAL capacity. I do have couple of 700's where the I can reach lands with 0.010 but that is from shooting heavier longer bullets with pretty much "standard" ogives. Sometimes trading the accuracy of getting closer to the lands with a "standard" bullet offsets shooting a high BC bullet that you cannot feed if loaded close to the lands. My 300WM Sendero loves the 200AB 0.010 off the lands and will feed perfectly. I tried farther and shot fine but really shouted "Right here!" when I moved to 0.010! </p><p></p><p>I have always started 0.020 off the lands since I have found my rifles will shoot pretty well starting there and then moving both directions 0.010. If nothing looks magical, then I go farther off the lands. I just replaced an 50 year old Savage 110C .270 barrel last year. that only shot worth a darn at SAAMI no matter what bullet you tried. Never could figure that one out so just loaded SAAMI specs and took what that old rifle gave me. BTW I bought that rifle new when I was 18 so for those whizbang mathematicians with a smart phone I am now 69. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite8" alt=":D" title="Big Grin :D" loading="lazy" data-shortname=":D" /></p><p></p><p>New ER Shaw barrel on same old Savage loves 0.025 off with the Hornady 145 ELDX but won't load into the old box magazine so I have gone 0.050 off the lands it still shoots fine but not quite as good as 0.025.</p><p></p><p>The accuracy chase off the lands is a balancing act with feed but might be doable with standard ogive style longer heavier bullets in certain rifles.</p></blockquote><p></p>
[QUOTE="Muddyboots, post: 1686202, member: 63925"] Since I am dealing with factory rifles or replacement stocks with AICS mags, I usually start with the MAX COAL (not ogive) for reliable magazine feed whether box etc. It makes no sense to find a really accurate round 0.010 off the lands if you can't feed anything than 0.030 off the lands due to COAL limitations UNLESS you shoot single shot. I do load to the ogive measurement to fit the magazines COAL capacity. I do have couple of 700's where the I can reach lands with 0.010 but that is from shooting heavier longer bullets with pretty much "standard" ogives. Sometimes trading the accuracy of getting closer to the lands with a "standard" bullet offsets shooting a high BC bullet that you cannot feed if loaded close to the lands. My 300WM Sendero loves the 200AB 0.010 off the lands and will feed perfectly. I tried farther and shot fine but really shouted "Right here!" when I moved to 0.010! I have always started 0.020 off the lands since I have found my rifles will shoot pretty well starting there and then moving both directions 0.010. If nothing looks magical, then I go farther off the lands. I just replaced an 50 year old Savage 110C .270 barrel last year. that only shot worth a darn at SAAMI no matter what bullet you tried. Never could figure that one out so just loaded SAAMI specs and took what that old rifle gave me. BTW I bought that rifle new when I was 18 so for those whizbang mathematicians with a smart phone I am now 69. :D New ER Shaw barrel on same old Savage loves 0.025 off with the Hornady 145 ELDX but won't load into the old box magazine so I have gone 0.050 off the lands it still shoots fine but not quite as good as 0.025. The accuracy chase off the lands is a balancing act with feed but might be doable with standard ogive style longer heavier bullets in certain rifles. [/QUOTE]
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Finding "sweet spot" with bullet seating adjustment
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