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Mill ranging limits
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<blockquote data-quote="Marine sniper" data-source="post: 298622" data-attributes="member: 4768"><p>If you know the size of the target and break the mills down to 1/10 th. or even better 1/20 th. mill dots are very accurate. The issue is you must know the size of the target. If you assume a deer is 18" from top to bottom of the chest and you are off by 2" you are already more than 10% wrong. When using mills you want to use the largest part of the target that is available. Try to find out how long deer are from butt to chest; it will give you more room for error.</p><p></p><p>No doubt the 338 RUM is a fine cartridge and the 300 SMK is a great long range bullet; but for your application I would want a lot flatter trajectory. When you get a laser range finder the 300 SMK will be the best choice, but for now you want as flat as trajectory as possible to make up for an errors in your range estimation (which is your primary limiting factor) Your best bet is probably something in the 200- 225 gr. range with as much velocity as accuracy will permit. If you run ballistic tables of a 300 SMK at around 2800 vs. a 200- 225 BT at 3100-3300 fps. you will see how much flatter the 200-225 gr bullets are at the ranges you want to shoot, 600 and less.</p><p></p><p>And yes, I have a little experience with mill-dots.</p></blockquote><p></p>
[QUOTE="Marine sniper, post: 298622, member: 4768"] If you know the size of the target and break the mills down to 1/10 th. or even better 1/20 th. mill dots are very accurate. The issue is you must know the size of the target. If you assume a deer is 18" from top to bottom of the chest and you are off by 2" you are already more than 10% wrong. When using mills you want to use the largest part of the target that is available. Try to find out how long deer are from butt to chest; it will give you more room for error. No doubt the 338 RUM is a fine cartridge and the 300 SMK is a great long range bullet; but for your application I would want a lot flatter trajectory. When you get a laser range finder the 300 SMK will be the best choice, but for now you want as flat as trajectory as possible to make up for an errors in your range estimation (which is your primary limiting factor) Your best bet is probably something in the 200- 225 gr. range with as much velocity as accuracy will permit. If you run ballistic tables of a 300 SMK at around 2800 vs. a 200- 225 BT at 3100-3300 fps. you will see how much flatter the 200-225 gr bullets are at the ranges you want to shoot, 600 and less. And yes, I have a little experience with mill-dots. [/QUOTE]
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