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Rifles, Reloading, Optics, Equipment
Reloading
Trick to jumping bullets???
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<blockquote data-quote="bowhunter42" data-source="post: 527965" data-attributes="member: 32635"><p>I usually measure my chamber length and then my mag length to see what kinda jump im looking at. I then load to 5 thousadth's off the mag length and load 6 rounds, then load 6 more 40 thou off that and 6 more 40 thou off that down to around saami coal. I usually get about 4 groups of six rounds. one of these groups always shoot alot better than the others. I then use that as my starting length to develop a load for that rifle. I have found that something as simple as changing a primer can effect the grouping of a load. In my 300 win I found a load that shoot really well but my ES was up in the 50's I changed the primer from cci to federal and my Es dropped into single didgits but my groups opened way up. I changed to win primers with the same result. back to CCI primers and I increased the powder charge by .5 grains and both my group size and ES tighten back up. ES down to 11fps and Groups down to 1/2 inch. I am shooting Berger's out of it and long range performance is outstanding.</p></blockquote><p></p>
[QUOTE="bowhunter42, post: 527965, member: 32635"] I usually measure my chamber length and then my mag length to see what kinda jump im looking at. I then load to 5 thousadth's off the mag length and load 6 rounds, then load 6 more 40 thou off that and 6 more 40 thou off that down to around saami coal. I usually get about 4 groups of six rounds. one of these groups always shoot alot better than the others. I then use that as my starting length to develop a load for that rifle. I have found that something as simple as changing a primer can effect the grouping of a load. In my 300 win I found a load that shoot really well but my ES was up in the 50's I changed the primer from cci to federal and my Es dropped into single didgits but my groups opened way up. I changed to win primers with the same result. back to CCI primers and I increased the powder charge by .5 grains and both my group size and ES tighten back up. ES down to 11fps and Groups down to 1/2 inch. I am shooting Berger's out of it and long range performance is outstanding. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Trick to jumping bullets???
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