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Rifles, Reloading, Optics, Equipment
Reloading
HELP WITH SATERLEE VELOCITY TEST
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<blockquote data-quote="25WSM" data-source="post: 1959855" data-attributes="member: 38048"><p>So I mentioned that I tune my 1000 yard gun day before matches and some remarked sure they will do that every night before going hunting. Well anyway my tuning before a match applies to hunting also. Lots of people tune their rifles during the summer months and shoot ground hogs or clay birds to keep sharp. But when hunting season gets here it's much colder out and your gun will go out of tune. So I do the same test with my hunting rifles as I do my 1000 yard comp guns. I load 5, 4 shot groups. I shoot them at long range. For my 1000 yard guns it's at 1000 for my hunting guns it's normally 300 because that's what I have at my shop. So for my 1000 yard gun I use my last load and load 2 sets under and 2 sets over. I separate them by 2 tenths. I color the tips of each set the same color and shoot them all at one aiming point. What I look for is the 2 loads that overlap each other. At 1000 yards all 5 groups will be in about 15 inches. But 2 or 3 loads will print right on top of each other. Now for my hunting rifle I do it a little different. I know my load is going to be slow going into winter. Colder is slower 99% of the time. I actually don't now of any powder that gets faster in the cold but it may exist. So on my hunting rifles I load up 5 groups of four starting on my current load and only going up in charge. And shoot them the same way I do at 1000 but I use separate aiming points because at 300 yards all the groups would be in no more than a few inches. Sometimes just loading up to match your accuracy speed is good enough. So if you want to shortcut it you can give it a go. Just do single shot of increasing charges till you get to your good accuacy velocity and then shoot a verification group to see how it does. I like to shoot the 5 groups so I can find the over lapping charges. These overlapping charges are in the node and are more forgiving of weather changes. Using temp insensitive powder helps a ton. I used to use rl22 in my hunting rifle and it would slow down 75 fps in my 257wby. For the most part every rifle will lose its tune going from 80 degrees to 30 degrees. If you think temp won't change your tune just ask someone that shoots 1 and 200 yd br. Our 6ppc would lose tune in 10 degrees. Most cartridges are not this picky thank God. Hope this helps. The things long-range compatition shooters do does directly relate to long range hunting rifles. </p><p>Shep</p></blockquote><p></p>
[QUOTE="25WSM, post: 1959855, member: 38048"] So I mentioned that I tune my 1000 yard gun day before matches and some remarked sure they will do that every night before going hunting. Well anyway my tuning before a match applies to hunting also. Lots of people tune their rifles during the summer months and shoot ground hogs or clay birds to keep sharp. But when hunting season gets here it's much colder out and your gun will go out of tune. So I do the same test with my hunting rifles as I do my 1000 yard comp guns. I load 5, 4 shot groups. I shoot them at long range. For my 1000 yard guns it's at 1000 for my hunting guns it's normally 300 because that's what I have at my shop. So for my 1000 yard gun I use my last load and load 2 sets under and 2 sets over. I separate them by 2 tenths. I color the tips of each set the same color and shoot them all at one aiming point. What I look for is the 2 loads that overlap each other. At 1000 yards all 5 groups will be in about 15 inches. But 2 or 3 loads will print right on top of each other. Now for my hunting rifle I do it a little different. I know my load is going to be slow going into winter. Colder is slower 99% of the time. I actually don't now of any powder that gets faster in the cold but it may exist. So on my hunting rifles I load up 5 groups of four starting on my current load and only going up in charge. And shoot them the same way I do at 1000 but I use separate aiming points because at 300 yards all the groups would be in no more than a few inches. Sometimes just loading up to match your accuracy speed is good enough. So if you want to shortcut it you can give it a go. Just do single shot of increasing charges till you get to your good accuacy velocity and then shoot a verification group to see how it does. I like to shoot the 5 groups so I can find the over lapping charges. These overlapping charges are in the node and are more forgiving of weather changes. Using temp insensitive powder helps a ton. I used to use rl22 in my hunting rifle and it would slow down 75 fps in my 257wby. For the most part every rifle will lose its tune going from 80 degrees to 30 degrees. If you think temp won't change your tune just ask someone that shoots 1 and 200 yd br. Our 6ppc would lose tune in 10 degrees. Most cartridges are not this picky thank God. Hope this helps. The things long-range compatition shooters do does directly relate to long range hunting rifles. Shep [/QUOTE]
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HELP WITH SATERLEE VELOCITY TEST
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