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Long Range Hunting & Shooting
260 w/130g VLD load developement
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<blockquote data-quote="djtjr" data-source="post: 896462" data-attributes="member: 13195"><p>You seems to be in a safe range. I use the same basic range and even a bit more with 140s so you should be ok but please watch for pressure. When I start out I find where I want to be seated for vlds it's usually into the lands as this will give max pressure for a given powder charge generally then I load 10 or so rounds building up from very conservative to not so conservative in small increments looking for the first sign of pressure (usuallyejector marks then primer flattening. I then back off the first pressure sign by about .5 grains for a cartridge like the 260 and use that as my max charge then go down from there in 5-9 increments of .3-.5 grains and shoot for groups you should find prob at least 2 accuracy nodes in there then chrono the good ones and take your pick. You can also kill two birds with one stone on the pressure test part by doing a ladder test simultaneously at 300+ yds which will likely help you find a good vertical node that you can recon firm with groups. Then play with seating depth to fine tune it and again in most cases if you start into the lands seating the bullet further into the case will decrease pressure. As for into vs off the lands there is a great thhread about getting the vlds to shoot well off the lands here on this site.</p></blockquote><p></p>
[QUOTE="djtjr, post: 896462, member: 13195"] You seems to be in a safe range. I use the same basic range and even a bit more with 140s so you should be ok but please watch for pressure. When I start out I find where I want to be seated for vlds it's usually into the lands as this will give max pressure for a given powder charge generally then I load 10 or so rounds building up from very conservative to not so conservative in small increments looking for the first sign of pressure (usuallyejector marks then primer flattening. I then back off the first pressure sign by about .5 grains for a cartridge like the 260 and use that as my max charge then go down from there in 5-9 increments of .3-.5 grains and shoot for groups you should find prob at least 2 accuracy nodes in there then chrono the good ones and take your pick. You can also kill two birds with one stone on the pressure test part by doing a ladder test simultaneously at 300+ yds which will likely help you find a good vertical node that you can recon firm with groups. Then play with seating depth to fine tune it and again in most cases if you start into the lands seating the bullet further into the case will decrease pressure. As for into vs off the lands there is a great thhread about getting the vlds to shoot well off the lands here on this site. [/QUOTE]
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260 w/130g VLD load developement
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