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Rifles, Reloading, Optics, Equipment
Reloading
Checking Runout ?
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<blockquote data-quote="Shawn Carlock" data-source="post: 259687" data-attributes="member: 4"><p>DerekM,</p><p> </p><p> If you put the bullet on the front cradle and measure straigth above it you are measuring nothing to speak of. The whole purpose is to send the bullet down the bore straight. Assuming that the chamber is square with the bore you want the bullet in the center of the case and pointing straight. The method you have described will not identify neck runout issues or bullet runout issues. The neck must be straight with the axis of the case and the bullet must be straight with the axis of the case to allow it to go straight down the barrel coming from a square chamber. The two cradle points should be on the body of the case as far apart as is practically possible. The indicator point should be on the bullets forward baring surface as far as possible but not out on the ogive. This will give you the true bullet run out based on the axis of the case. If you have excessive runout you can move the indicator to the neck to check the neck runout. You have to get little to no neck runout before you can get good bullet runout. If you put the forward cradle on the neck it will eliminate the ablilty to read the neck runout in the total, if you put the cradle on the bullet and the indicator above it you are reading nothing. Your original method was correct now you need to see if you are starting with neck runout before seating the bullet by running out the necks.</p></blockquote><p></p>
[QUOTE="Shawn Carlock, post: 259687, member: 4"] DerekM, If you put the bullet on the front cradle and measure straigth above it you are measuring nothing to speak of. The whole purpose is to send the bullet down the bore straight. Assuming that the chamber is square with the bore you want the bullet in the center of the case and pointing straight. The method you have described will not identify neck runout issues or bullet runout issues. The neck must be straight with the axis of the case and the bullet must be straight with the axis of the case to allow it to go straight down the barrel coming from a square chamber. The two cradle points should be on the body of the case as far apart as is practically possible. The indicator point should be on the bullets forward baring surface as far as possible but not out on the ogive. This will give you the true bullet run out based on the axis of the case. If you have excessive runout you can move the indicator to the neck to check the neck runout. You have to get little to no neck runout before you can get good bullet runout. If you put the forward cradle on the neck it will eliminate the ablilty to read the neck runout in the total, if you put the cradle on the bullet and the indicator above it you are reading nothing. Your original method was correct now you need to see if you are starting with neck runout before seating the bullet by running out the necks. [/QUOTE]
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Reloading
Checking Runout ?
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