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Rifles, Reloading, Optics, Equipment
Reloading
Help with 300 ultra groups....
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<blockquote data-quote="Mikiedem" data-source="post: 703943" data-attributes="member: 28572"><p>When I develop a long range load I will start at a distance where I plan most of shots will take place so typically my ladder will start at 500 yards with a blank piece of paper appx. 3 ft long with bull in the middle ( 1k target at army surplus works great). After deciding on my start and appx max load I will load 1 round in .3-.5 increments (depending on what I'm shooting) to my max. I dope my scope so I will hit low on the paper while holding on bull so as the charge increases the pattern will climb. Document after every shot on the target and inspect brass for excessive pressure. After all shots are fired the target will show a node with the least amount of vertical variance. Once the node is noted, it will be between .9 and 1.5 grain spread (depending on what increment I loaded) lets say the node is 92.3-93.2. Now I know that even if my powder thrower throws a little light or heavy my point of impact is going to stay relatively the same. Now I will load 3 shot loads 92.2, 92.4, 92.6, 92.8, 93.0, 93.2 and go shoot at 700 round robin style documenting each shot and find the load with the least amount of vertical variance. This will be my new best friend for this rifle. I don't worry to much about horizontal because as you know by the time you start and finish the wind here will change alot. This is what has worked for me and several rifles, maybe it will help you in your quest to 1k, maybe you already know. Figured if I didn't share then it may be new info left not shared.</p></blockquote><p></p>
[QUOTE="Mikiedem, post: 703943, member: 28572"] When I develop a long range load I will start at a distance where I plan most of shots will take place so typically my ladder will start at 500 yards with a blank piece of paper appx. 3 ft long with bull in the middle ( 1k target at army surplus works great). After deciding on my start and appx max load I will load 1 round in .3-.5 increments (depending on what I'm shooting) to my max. I dope my scope so I will hit low on the paper while holding on bull so as the charge increases the pattern will climb. Document after every shot on the target and inspect brass for excessive pressure. After all shots are fired the target will show a node with the least amount of vertical variance. Once the node is noted, it will be between .9 and 1.5 grain spread (depending on what increment I loaded) lets say the node is 92.3-93.2. Now I know that even if my powder thrower throws a little light or heavy my point of impact is going to stay relatively the same. Now I will load 3 shot loads 92.2, 92.4, 92.6, 92.8, 93.0, 93.2 and go shoot at 700 round robin style documenting each shot and find the load with the least amount of vertical variance. This will be my new best friend for this rifle. I don't worry to much about horizontal because as you know by the time you start and finish the wind here will change alot. This is what has worked for me and several rifles, maybe it will help you in your quest to 1k, maybe you already know. Figured if I didn't share then it may be new info left not shared. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Help with 300 ultra groups....
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