I had just recently got into reloading and was wondering what is the best/easiest way to find the OAL from the ogive and not the meplat?
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Best way to find OAL from ogive
- Thread starter Tactical30
- Start date
Re: Best way to find OAL from ogive
Basically, what you are asking is "How tall am I?" by measuring how long my right arm is. Because of the way bullets are made, well MOST bullets, when the punch knocks the bullet out of the die it can change the nose of the bullet. Whereas the ogive is a much more stabil place to measure. The comparitor attached to calipers is the best / easiest way to measure ogive.
Basically, what you are asking is "How tall am I?" by measuring how long my right arm is. Because of the way bullets are made, well MOST bullets, when the punch knocks the bullet out of the die it can change the nose of the bullet. Whereas the ogive is a much more stabil place to measure. The comparitor attached to calipers is the best / easiest way to measure ogive.
Re: Best way to find OAL from ogive
i use the sinclair six sided ogive guage. it measured about .98 inches, dont have the exact numbers with me, but thats close. then i put the guage over the seated bullet and subtract the .98. one thing that helped me was i closed my caliper and marked it with a sharpie. then i make sure the sharpie mark is under the primer on one side and the mark over the top dead center of the guage. it seems to help me index the cartridge in the caliper. i have not used any other types of ogive guages though. sorry for the long winded answer, but hope it helps.
i use the sinclair six sided ogive guage. it measured about .98 inches, dont have the exact numbers with me, but thats close. then i put the guage over the seated bullet and subtract the .98. one thing that helped me was i closed my caliper and marked it with a sharpie. then i make sure the sharpie mark is under the primer on one side and the mark over the top dead center of the guage. it seems to help me index the cartridge in the caliper. i have not used any other types of ogive guages though. sorry for the long winded answer, but hope it helps.
Re: Best way to find OAL from ogive
Could not agree more. I would never waste time measuring oal!
the ogive to the base is the measurment you need to stay consistant in relation to the rifling
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Victor N TN</div><div class="ubbcode-body">Basically, what you are asking is "How tall am I?" by measuring how long my right arm is. Because of the way bullets are made, well MOST bullets, when the punch knocks the bullet out of the die it can change the nose of the bullet. Whereas the ogive is a much more stabil place to measure. The comparitor attached to calipers is the best / easiest way to measure ogive. </div></div>
Could not agree more. I would never waste time measuring oal!
the ogive to the base is the measurment you need to stay consistant in relation to the rifling
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Victor N TN</div><div class="ubbcode-body">Basically, what you are asking is "How tall am I?" by measuring how long my right arm is. Because of the way bullets are made, well MOST bullets, when the punch knocks the bullet out of the die it can change the nose of the bullet. Whereas the ogive is a much more stabil place to measure. The comparitor attached to calipers is the best / easiest way to measure ogive. </div></div>
Re: Best way to find OAL from ogive
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Victor N TN</div><div class="ubbcode-body">Basically, what you are asking is "How tall am I?" by measuring how long my right arm is. Because of the way bullets are made, well MOST bullets, when the punch knocks the bullet out of the die it can change the nose of the bullet. Whereas the ogive is a much more stabil place to measure. The comparitor attached to calipers is the best / easiest way to measure ogive. </div></div>
Once saw an episode where "Quincy" used a thigh bone to recreate a man's size, weight, looks, determined the cause of death and even found the killer.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Victor N TN</div><div class="ubbcode-body">Basically, what you are asking is "How tall am I?" by measuring how long my right arm is. Because of the way bullets are made, well MOST bullets, when the punch knocks the bullet out of the die it can change the nose of the bullet. Whereas the ogive is a much more stabil place to measure. The comparitor attached to calipers is the best / easiest way to measure ogive. </div></div>
Once saw an episode where "Quincy" used a thigh bone to recreate a man's size, weight, looks, determined the cause of death and even found the killer.
Re: Best way to find OAL from ogive
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: EddieNFL</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Victor N TN</div><div class="ubbcode-body">Basically, what you are asking is "How tall am I?" by measuring how long my right arm is. Because of the way bullets are made, well MOST bullets, when the punch knocks the bullet out of the die it can change the nose of the bullet. Whereas the ogive is a much more stabil place to measure. The comparitor attached to calipers is the best / easiest way to measure ogive. </div></div>
Once saw an episode where "Quincy" used a thigh bone to recreate a man's size, weight, looks, determined the cause of death and even found the killer.
</div></div>
But can you remember the exact formula used? And besides, speaking as a bullet maker myself, the OAL of the bullet itself is NOT a given. Because of the way and in the bulk the jackets are made, they usually vary several thousandths in each handful.
Measure a hundred rounds at the base to ogive length then the OAL of the loaded cartridge (bullets seated with an open seating plug to seat NOT on the point of the bullet) and make a chart. Then go with the tallest peak on the bell curve.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: EddieNFL</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Victor N TN</div><div class="ubbcode-body">Basically, what you are asking is "How tall am I?" by measuring how long my right arm is. Because of the way bullets are made, well MOST bullets, when the punch knocks the bullet out of the die it can change the nose of the bullet. Whereas the ogive is a much more stabil place to measure. The comparitor attached to calipers is the best / easiest way to measure ogive. </div></div>
Once saw an episode where "Quincy" used a thigh bone to recreate a man's size, weight, looks, determined the cause of death and even found the killer.
But can you remember the exact formula used? And besides, speaking as a bullet maker myself, the OAL of the bullet itself is NOT a given. Because of the way and in the bulk the jackets are made, they usually vary several thousandths in each handful.
Measure a hundred rounds at the base to ogive length then the OAL of the loaded cartridge (bullets seated with an open seating plug to seat NOT on the point of the bullet) and make a chart. Then go with the tallest peak on the bell curve.
