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Rifles, Reloading, Optics, Equipment
Reloading
Measuring to the lands
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<blockquote data-quote="dok7mm" data-source="post: 1122152" data-attributes="member: 90080"><p>Bob4, Sorry I misunderstood your original question. Thought you were sorting bullets. Seems like you are asking about determining CBTO to lands and setting up jump w/ Hornady OAL gauge. Right? If so, pick one bullet to use of each type and weight, save and record data for each bullet (same deal for different rifles or barrels). I usually go a bit firmly into lands to establish a "slight jam" reference depth and record it. Then I will seat the same bullet lightly touching about 10-12 times and record. I then throw out 2 from long & 2 from short, then take an average of the remaining lengths. This always puts me pretty close. Once again, consistent method will give the best results. Sounds like @ .005" variance, you're doing well. Save the exact bullet, use exact same comparator and calipers to use to gauge at a later date (checking neck erosion, etc.)</p></blockquote><p></p>
[QUOTE="dok7mm, post: 1122152, member: 90080"] Bob4, Sorry I misunderstood your original question. Thought you were sorting bullets. Seems like you are asking about determining CBTO to lands and setting up jump w/ Hornady OAL gauge. Right? If so, pick one bullet to use of each type and weight, save and record data for each bullet (same deal for different rifles or barrels). I usually go a bit firmly into lands to establish a "slight jam" reference depth and record it. Then I will seat the same bullet lightly touching about 10-12 times and record. I then throw out 2 from long & 2 from short, then take an average of the remaining lengths. This always puts me pretty close. Once again, consistent method will give the best results. Sounds like @ .005" variance, you're doing well. Save the exact bullet, use exact same comparator and calipers to use to gauge at a later date (checking neck erosion, etc.) [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Measuring to the lands
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