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Rifles, Reloading, Optics, Equipment
Reloading
New to reloading and already hit a snag.
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<blockquote data-quote="sedancowboy" data-source="post: 1369254" data-attributes="member: 85874"><p>I will take a shot at this. Several variables to consider. If you are using Different brands of brass and even different lots then they can be different in size as well. Your numbers do seem a bit off I use a .314 for my 7mm. But I am using Nosler brass. Where on the neck are you measuring? I measure about 1/8 from the case mouth or in the center of the neck not at the case mouth. I also use a good micrometer instead of a caliper. Having said that my calipers measure the same as my mics. You will need to determine the correct bushing for each brand of brass you plan to reload or neck turn them all to one consistent size. Since you don't have a standard non bushing die you will have to rely on the factory rounds to measure the diameter of the neck with a bullet seated. Yes you should buy a bushing about .002 less than the diameter of the loaded round. As you can see there are differences in the diameter of factory ammo which will require you to have different bushing on hand. My starting point is Bullet dia. in this case .284+case neck thickness X2 so .284+.014+.014=.314-.002=.312 bushing. Hope that helps. If all this seems as clear as mud please ask for clarification.</p></blockquote><p></p>
[QUOTE="sedancowboy, post: 1369254, member: 85874"] I will take a shot at this. Several variables to consider. If you are using Different brands of brass and even different lots then they can be different in size as well. Your numbers do seem a bit off I use a .314 for my 7mm. But I am using Nosler brass. Where on the neck are you measuring? I measure about 1/8 from the case mouth or in the center of the neck not at the case mouth. I also use a good micrometer instead of a caliper. Having said that my calipers measure the same as my mics. You will need to determine the correct bushing for each brand of brass you plan to reload or neck turn them all to one consistent size. Since you don't have a standard non bushing die you will have to rely on the factory rounds to measure the diameter of the neck with a bullet seated. Yes you should buy a bushing about .002 less than the diameter of the loaded round. As you can see there are differences in the diameter of factory ammo which will require you to have different bushing on hand. My starting point is Bullet dia. in this case .284+case neck thickness X2 so .284+.014+.014=.314-.002=.312 bushing. Hope that helps. If all this seems as clear as mud please ask for clarification. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
New to reloading and already hit a snag.
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