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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Preliminary results LOST RIVER 162 Gr 7 MM J40 Ballistics
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<blockquote data-quote="daveosok" data-source="post: 24063"><p>Well Brent I only had 40 bullets to work with. 7 of the groups I did were LRBT bullets.</p><p>Thats 7 different powders, imagin buying enough bullets to do exactly what you suggested and work up each powder for each bullet. Then seating depth yeah theres another 100 or so bullets.</p><p>I wanted to test a lot of them and see what might be worth while investigating before I headed off to buy 500 more bullets for testing purposes.</p><p>At 14.60 a box it can get real expensive really quick. I was searching for the needle in the haystack hopeing to have something show signs of possibilities.</p><p>I will try and few more powders and set ups first before I go and start messing with seating depth.</p><p>The way I do my loads is </p><p>first set the bullet to the lands</p><p>second try as many different powders as possible set to mean (64.5 grains - 74.5 grains middle is 69.5) load data</p><p>thrid record velocity and group size and compare for possible continuing loads</p><p>Then I come back and set up for different powder (working with the mean) loads for the bullets that showed signs of interest.</p><p>Once I get the right powder and group size then I go to seating depth.</p><p>If you mess with to many things at once when working up loads youll never know wahts causing your loads to do what they are doing leaving you in the dark in my opinion.</p><p>Brent one more thing,</p><p>Have you ever tried to stuff a solid further into the lands? I have the Stoney Point tool for measureing bullet seating depth. With a slight tap from a hammer would be the only way to seat these LRBT deeper, they are solid and are made of different material composition and thus far have a lot harder RC than regular jacketed bullets. Seating deeper may present probelms when loading rounds as seating it deeper would engage the bullet into the lands with such a restraint that bolt operation maybe become difficult as you could possibly be trying to turn the case while the bullet is stationary.</p><p></p><p>[ 12-10-2002: Message edited by: daveosok ]</p><p></p><p>[ 12-10-2002: Message edited by: daveosok ]</p></blockquote><p></p>
[QUOTE="daveosok, post: 24063"] Well Brent I only had 40 bullets to work with. 7 of the groups I did were LRBT bullets. Thats 7 different powders, imagin buying enough bullets to do exactly what you suggested and work up each powder for each bullet. Then seating depth yeah theres another 100 or so bullets. I wanted to test a lot of them and see what might be worth while investigating before I headed off to buy 500 more bullets for testing purposes. At 14.60 a box it can get real expensive really quick. I was searching for the needle in the haystack hopeing to have something show signs of possibilities. I will try and few more powders and set ups first before I go and start messing with seating depth. The way I do my loads is first set the bullet to the lands second try as many different powders as possible set to mean (64.5 grains - 74.5 grains middle is 69.5) load data thrid record velocity and group size and compare for possible continuing loads Then I come back and set up for different powder (working with the mean) loads for the bullets that showed signs of interest. Once I get the right powder and group size then I go to seating depth. If you mess with to many things at once when working up loads youll never know wahts causing your loads to do what they are doing leaving you in the dark in my opinion. Brent one more thing, Have you ever tried to stuff a solid further into the lands? I have the Stoney Point tool for measureing bullet seating depth. With a slight tap from a hammer would be the only way to seat these LRBT deeper, they are solid and are made of different material composition and thus far have a lot harder RC than regular jacketed bullets. Seating deeper may present probelms when loading rounds as seating it deeper would engage the bullet into the lands with such a restraint that bolt operation maybe become difficult as you could possibly be trying to turn the case while the bullet is stationary. [ 12-10-2002: Message edited by: daveosok ] [ 12-10-2002: Message edited by: daveosok ] [/QUOTE]
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Preliminary results LOST RIVER 162 Gr 7 MM J40 Ballistics
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