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Rifles, Reloading, Optics, Equipment
Reloading
wierd velocities, Load or chrono problem?
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<blockquote data-quote="300remum" data-source="post: 391521" data-attributes="member: 24626"><p>hello all!</p><p>i started load development for my wife 260 rem model 7 this morning.</p><p>i use remington once fired brass</p><p>cci br 2 primers</p><p>nosler 120 gr. ballistic tips</p><p>and h4350 powder</p><p>coal is 2.780"</p><p>i tried the newberry method for the first time. as far as grouping goes</p><p>i'm satified, for a first attempt.</p><p>here's the target.</p><p><a href="http://img20.imageshack.us/i/p1040750e.jpg/" target="_blank"><img src="http://img20.imageshack.us/img20/5301/p1040750e.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></a></p><p>Uploaded with <a href="http://imageshack.us" target="_blank">ImageShack.us</a></p><p>group number three has a flier, probably my error, i just don't know.</p><p>so here's the chrono i got on those</p><p>group 1 is 44.8 grains vel. was 2744,2789,2005???</p><p>group 2 is 45.2 grains vel. was 2803,1969,1766</p><p>group 3 is 45.6 grains vel. was 2772,2002,2650</p><p>group 4 is 46.0 grains vel. was 1999,2063,2715</p><p>group 5 is 46.4 grains vel. was 2054,2867,2825.</p><p>i also shot 3, 3 shot group with my 308 and factory loads, and all were around 2700 fps.</p><p>so what do you long time reloaders think?</p><p>i never experienced something like this with this chrono so far.</p><p>after the first few odd readings i relocated the setup somewhere else</p><p>to make sure the sun angle wasn't playing tricks on the chrono.( prochrono pal)</p><p>all the loads were carefully weighted on a beam scale. </p><p>scale was zeroed before and checked after loading session.</p><p>all the shot felt the same (recoil and muzzle blast).</p><p>should i use magnum primers with this powder?</p><p>is it possible that it's the load?</p><p>would i get groups like that at 100 yard with some bullets going 800 fps slower?</p><p>i'm a bit lost right now.</p><p>thank's for your help.</p></blockquote><p></p>
[QUOTE="300remum, post: 391521, member: 24626"] hello all! i started load development for my wife 260 rem model 7 this morning. i use remington once fired brass cci br 2 primers nosler 120 gr. ballistic tips and h4350 powder coal is 2.780" i tried the newberry method for the first time. as far as grouping goes i'm satified, for a first attempt. here's the target. [URL=http://img20.imageshack.us/i/p1040750e.jpg/][img]http://img20.imageshack.us/img20/5301/p1040750e.jpg[/img][/URL] Uploaded with [URL=http://imageshack.us]ImageShack.us[/URL] group number three has a flier, probably my error, i just don't know. so here's the chrono i got on those group 1 is 44.8 grains vel. was 2744,2789,2005??? group 2 is 45.2 grains vel. was 2803,1969,1766 group 3 is 45.6 grains vel. was 2772,2002,2650 group 4 is 46.0 grains vel. was 1999,2063,2715 group 5 is 46.4 grains vel. was 2054,2867,2825. i also shot 3, 3 shot group with my 308 and factory loads, and all were around 2700 fps. so what do you long time reloaders think? i never experienced something like this with this chrono so far. after the first few odd readings i relocated the setup somewhere else to make sure the sun angle wasn't playing tricks on the chrono.( prochrono pal) all the loads were carefully weighted on a beam scale. scale was zeroed before and checked after loading session. all the shot felt the same (recoil and muzzle blast). should i use magnum primers with this powder? is it possible that it's the load? would i get groups like that at 100 yard with some bullets going 800 fps slower? i'm a bit lost right now. thank's for your help. [/QUOTE]
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Reloading
wierd velocities, Load or chrono problem?
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