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Load Tuning By Jerry Teo
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<blockquote data-quote="groper" data-source="post: 446236" data-attributes="member: 12550"><p>Ha Ha! great thread, and well done Mikecr... i can relate to this entirely...</p><p></p><p>Initially, i did it the 'normal' way, and the way i was first taught to do it years ago... pick a seating depth, usually 20thou of the lands, or 'what everyone seemed to be doing with that particular projectile' and work up a powder/primer combination, then come back to fine tune the seating depth later.... Now, i do it the way Mickcr says...</p><p></p><p>The reason is, i noticed MUCH bigger differences in group size caused by seating depth compared with powder loads, same as mike describes. Usually, and using a mild load, i can barely see any differences in grouping size. So now, i simply pick a powder load that seems to be popular and is a rather cool load and work with seating depth first. All the cool loads ive tested so far, all seem to group quite nicely from a well built, highly accurate custom rifle. Its at the hotter end that things seem to get increasingly inconsistant, so any coolish load is a better starting point than an arbitrary seating depth IMHO.</p></blockquote><p></p>
[QUOTE="groper, post: 446236, member: 12550"] Ha Ha! great thread, and well done Mikecr... i can relate to this entirely... Initially, i did it the 'normal' way, and the way i was first taught to do it years ago... pick a seating depth, usually 20thou of the lands, or 'what everyone seemed to be doing with that particular projectile' and work up a powder/primer combination, then come back to fine tune the seating depth later.... Now, i do it the way Mickcr says... The reason is, i noticed MUCH bigger differences in group size caused by seating depth compared with powder loads, same as mike describes. Usually, and using a mild load, i can barely see any differences in grouping size. So now, i simply pick a powder load that seems to be popular and is a rather cool load and work with seating depth first. All the cool loads ive tested so far, all seem to group quite nicely from a well built, highly accurate custom rifle. Its at the hotter end that things seem to get increasingly inconsistant, so any coolish load is a better starting point than an arbitrary seating depth IMHO. [/QUOTE]
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