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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
zeroing your scope
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<blockquote data-quote="jrs" data-source="post: 382696" data-attributes="member: 24554"><p>Wrad -</p><p> </p><p>Electonics Engineer, with strong Civil background, Navigator, and author of Coast Guard Search and Rescue software, who once owned a construction company -- hows that for mixed bag?</p><p> </p><p>Muzzle brakes, suppressors, and any other component that extends beyond the last point of contact between the barrel and the bullet don't count. CLOSE is not CONTACT, and those devices are NOT IN CONTACT with the bullet, but they are very close to contact. Off hand can't think of anything that contacts the bullet after it leaves the rifling. </p><p> </p><p>A simple rule (mine anyway) is that if "it" can affect the path of the bullet, and the shooter can directly affect "it" then "it" is analyzed as a componet of Interior Ballistics, if on the other hand only nature can affect "it" then "it" is a component of Exterior Ballistics.</p><p> </p><p>Hummm... Ported barrels, the porting is behind the last point of contact, that sort of muzzle brake has rifling and does contact the bullet. Original thought was of the screw on the end type ... anyway rule still applies.</p><p> </p><p>Another way to look at it would be the last point at which gravity does not affect the trajectory - except that gravity does bend the barrel a measurable amount - refer to Vaughn's accuracy work for how much.</p><p> </p><p>Anyway I still like the muzzle for the demark.</p><p> </p><p>Want to try something really fun? While you are trying to get your rifle on target at a mile, try it with a T/C Contender with a 10" .44Mag barrel, iron sights. Trajectory is more like a mortar, but FUN in the Extreme! If you can get out past 600 you'll have exceeded the maximum I've tried ... let me know what sort of sight picture you get?</p><p> </p><p>jrs</p></blockquote><p></p>
[QUOTE="jrs, post: 382696, member: 24554"] Wrad - Electonics Engineer, with strong Civil background, Navigator, and author of Coast Guard Search and Rescue software, who once owned a construction company -- hows that for mixed bag? Muzzle brakes, suppressors, and any other component that extends beyond the last point of contact between the barrel and the bullet don't count. CLOSE is not CONTACT, and those devices are NOT IN CONTACT with the bullet, but they are very close to contact. Off hand can't think of anything that contacts the bullet after it leaves the rifling. A simple rule (mine anyway) is that if "it" can affect the path of the bullet, and the shooter can directly affect "it" then "it" is analyzed as a componet of Interior Ballistics, if on the other hand only nature can affect "it" then "it" is a component of Exterior Ballistics. Hummm... Ported barrels, the porting is behind the last point of contact, that sort of muzzle brake has rifling and does contact the bullet. Original thought was of the screw on the end type ... anyway rule still applies. Another way to look at it would be the last point at which gravity does not affect the trajectory - except that gravity does bend the barrel a measurable amount - refer to Vaughn's accuracy work for how much. Anyway I still like the muzzle for the demark. Want to try something really fun? While you are trying to get your rifle on target at a mile, try it with a T/C Contender with a 10" .44Mag barrel, iron sights. Trajectory is more like a mortar, but FUN in the Extreme! If you can get out past 600 you'll have exceeded the maximum I've tried ... let me know what sort of sight picture you get? jrs [/QUOTE]
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