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Rifles, Reloading, Optics, Equipment
Reloading
OAL and TTL IMPoRTANCE??
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<blockquote data-quote="boomtube" data-source="post: 645927" data-attributes="member: 9215"><p>A "comparitor" is short for the tool or device we use to (comparitively) measure fired/sized CASE length from head to shoulder OR for bullet seating from head to (or very near) the bore diameter. Examples are RCBS' Precision Case Mics, Hornady and Sinclair's "case headspace" tools made to be mounted on the jaws of a precision caliper, and Innovative Technologies excellant diameter adjustable tool that uses a digital dial indicator mounted on a small stand; do a web search for the company sites to see examples. They all do the same thing and are equally accurate in what they do but they vary a bit in cost and how easy/fast they are to use.</p><p> </p><p>"Ogive" (pronounced "OH-jive") is the entire tapered bullet surface from body diameter to the meplat (point). Most of us loosely refer to ogive in seating as that point at which the bullet first contacts the rifling, ie, a .308" bullet is supposed to make contact on the ogive where the diameter is .300".</p><p> </p><p>I thought maybe your TTL was trim-to length but that's not a standardized term and I hate guessing when dealing with a specific issue.</p></blockquote><p></p>
[QUOTE="boomtube, post: 645927, member: 9215"] A "comparitor" is short for the tool or device we use to (comparitively) measure fired/sized CASE length from head to shoulder OR for bullet seating from head to (or very near) the bore diameter. Examples are RCBS' Precision Case Mics, Hornady and Sinclair's "case headspace" tools made to be mounted on the jaws of a precision caliper, and Innovative Technologies excellant diameter adjustable tool that uses a digital dial indicator mounted on a small stand; do a web search for the company sites to see examples. They all do the same thing and are equally accurate in what they do but they vary a bit in cost and how easy/fast they are to use. "Ogive" (pronounced "OH-jive") is the entire tapered bullet surface from body diameter to the meplat (point). Most of us loosely refer to ogive in seating as that point at which the bullet first contacts the rifling, ie, a .308" bullet is supposed to make contact on the ogive where the diameter is .300". I thought maybe your TTL was trim-to length but that's not a standardized term and I hate guessing when dealing with a specific issue. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
OAL and TTL IMPoRTANCE??
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