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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Prepping the big 300gr SMK???
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<blockquote data-quote="goodgrouper" data-source="post: 114922" data-attributes="member: 2852"><p>Thanks Steve.</p><p></p><p>Congrats on the purchase of one of the most inconsistent bullets around and absolutely the worst MK ever made! Buying these bullets in 100 count boxes is an absolute waste of time and money. 500 is minimum with 1000 being even better. Maybe Sierra knows this and is making money off it!</p><p></p><p>Here is what I've found:</p><p></p><p>For shooting to 1k, you might not have to do anything but measure ogives from the base using a Sinclair, Stoney POint, or other comparator tool. Then again, if you need to shoot something up to or around 1k, using another gun is probably the wisest choice. No need to burn the barrel out on that big boy when a 6br will do 1k easily.</p><p></p><p>For 1500 yards to a mile, things get a little more tricky. Measuring the bearing surface and ogives in a manner like what Shawn mentioned is a must. I do the segregating exactly like his method. I have found that even bullets leaving the barrel at EXACTLY the same speed but having as little as .002" difference in bearing surface length can yeild as much as a minute and a half impact variation! </p><p></p><p>At 2000 yards, I do the same things as 1 mile shooting, but I pick out only the best bullets with the best meplats. If there are none, then trimming the meplats may be in order. I have shot the MK with meplats trimmed and untrimmed for comparison and there will be a 3-4 minute reduction in moa elevation needed at 2k with the untrimmed bullets. By far, the bullets critical lengths are more important than the condition of the meplats-probably 10 to 1. </p><p></p><p>If you do choose to trim meplats, Tubbs tool is probably the best although Sinclair's new tool looks to be very good as well.</p><p></p><p>As for the bearing surface tools, I prefer and use the double Stoney POint method and have found it to work as well as the more expensive tools. All the ammo I loaded for the Moag last year was done in this manner including the ammo used on UB's 2k chuck as well as my own. <font color="red"> It works and it's cheap. </font> </p><p></p><p></p><p>I think Wildcat bullets will probably end up making a much better 300 grain 338 than Sierra. I hope they make it to market soon. Kirby, any word on those pills yet?</p><p></p><p>Berger would also make a kick-butt 338 if they would try. A J4 jacketed 275 or 300 grain VLD would kill elk and deer way better than the MK and would have a higher bc probably too! COME ON BERGER!!</p><p></p><p>Good luck with that cannon. /ubbthreads/images/graemlins/wink.gif</p></blockquote><p></p>
[QUOTE="goodgrouper, post: 114922, member: 2852"] Thanks Steve. Congrats on the purchase of one of the most inconsistent bullets around and absolutely the worst MK ever made! Buying these bullets in 100 count boxes is an absolute waste of time and money. 500 is minimum with 1000 being even better. Maybe Sierra knows this and is making money off it! Here is what I've found: For shooting to 1k, you might not have to do anything but measure ogives from the base using a Sinclair, Stoney POint, or other comparator tool. Then again, if you need to shoot something up to or around 1k, using another gun is probably the wisest choice. No need to burn the barrel out on that big boy when a 6br will do 1k easily. For 1500 yards to a mile, things get a little more tricky. Measuring the bearing surface and ogives in a manner like what Shawn mentioned is a must. I do the segregating exactly like his method. I have found that even bullets leaving the barrel at EXACTLY the same speed but having as little as .002" difference in bearing surface length can yeild as much as a minute and a half impact variation! At 2000 yards, I do the same things as 1 mile shooting, but I pick out only the best bullets with the best meplats. If there are none, then trimming the meplats may be in order. I have shot the MK with meplats trimmed and untrimmed for comparison and there will be a 3-4 minute reduction in moa elevation needed at 2k with the untrimmed bullets. By far, the bullets critical lengths are more important than the condition of the meplats-probably 10 to 1. If you do choose to trim meplats, Tubbs tool is probably the best although Sinclair's new tool looks to be very good as well. As for the bearing surface tools, I prefer and use the double Stoney POint method and have found it to work as well as the more expensive tools. All the ammo I loaded for the Moag last year was done in this manner including the ammo used on UB's 2k chuck as well as my own. <font color="red"> It works and it's cheap. </font> I think Wildcat bullets will probably end up making a much better 300 grain 338 than Sierra. I hope they make it to market soon. Kirby, any word on those pills yet? Berger would also make a kick-butt 338 if they would try. A J4 jacketed 275 or 300 grain VLD would kill elk and deer way better than the MK and would have a higher bc probably too! COME ON BERGER!! Good luck with that cannon. [img]/ubbthreads/images/graemlins/wink.gif[/img] [/QUOTE]
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Prepping the big 300gr SMK???
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