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Rifles, Reloading, Optics, Equipment
Reloading
Better Groups At Distance
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<blockquote data-quote="jensenj71" data-source="post: 2804841" data-attributes="member: 96797"><p>The arrow definitely doesn't seem to follow the line of sight or a straight line. The arrow comes out of the bow moving in the direction of the target at a slight angle. The angle steers the arrow off of the main path until it straightens out and then the main direction carries the arrow to target. It seems like I can see it isn't a straight line. Getting the arrow out of the bow straight definitely reduces group size on the target. The arrow is only tilted for say 10yds before the vanes pull it straight. I tune my bow to shoot a bare shaft arrow reasonably well at 25yds because it magnifies the impact at the target and allows me to tweak the tuning. I don't need to tune further out because the impact is all in at say 10yds and backing up further just adds other factors that I am not trying to tune. Once get the arrow launching straight I can add a broadhead and shoot an arrow with vanes from as far away as 90yds on a good day without any wind.</p><p></p><p>Is there any basis for thinking a bullet could do something similar. Launch tilted and slide until it stabilizes? If launched tilted would it slide because of aero jump where the bullet is tilted relative to the air vector? Tilted in the bore seems like a random effect because it would be tilted and spinning or wobbling. Tilted as it exits the bore could be spinning on a tilted axis. If the tilt was somewhat consistent the impact at the target could be regular and limited to a fixed displacement that does not vary with distance. Let's say the tilt alone creates a 0.5in variation in POI at 100yds but it does not persist beyond 100yds because the bullet stabilized. Then lets say the variation in angle launched created another 0.5in variation in POI at 100yds but it persists beyond 100yds. The measured group might be as large as 1in or 1MOA. At 200yds the tilt still only caused 0.5in or 0.25MOA. The angle launched is still 0.5MOA so perhaps we see a 0.75MOA group. At 400yds we are down to 0.625MOA assuming other factors don't start to creep in. The shrinking in group size would only appear in certain conditions.</p><p></p><p>Again, all just a giant what if! Good chance it is all just ******** because nobody has proven it in a shoot through situation. I just keep thinking about it in the context of my bow.</p></blockquote><p></p>
[QUOTE="jensenj71, post: 2804841, member: 96797"] The arrow definitely doesn't seem to follow the line of sight or a straight line. The arrow comes out of the bow moving in the direction of the target at a slight angle. The angle steers the arrow off of the main path until it straightens out and then the main direction carries the arrow to target. It seems like I can see it isn't a straight line. Getting the arrow out of the bow straight definitely reduces group size on the target. The arrow is only tilted for say 10yds before the vanes pull it straight. I tune my bow to shoot a bare shaft arrow reasonably well at 25yds because it magnifies the impact at the target and allows me to tweak the tuning. I don't need to tune further out because the impact is all in at say 10yds and backing up further just adds other factors that I am not trying to tune. Once get the arrow launching straight I can add a broadhead and shoot an arrow with vanes from as far away as 90yds on a good day without any wind. Is there any basis for thinking a bullet could do something similar. Launch tilted and slide until it stabilizes? If launched tilted would it slide because of aero jump where the bullet is tilted relative to the air vector? Tilted in the bore seems like a random effect because it would be tilted and spinning or wobbling. Tilted as it exits the bore could be spinning on a tilted axis. If the tilt was somewhat consistent the impact at the target could be regular and limited to a fixed displacement that does not vary with distance. Let's say the tilt alone creates a 0.5in variation in POI at 100yds but it does not persist beyond 100yds because the bullet stabilized. Then lets say the variation in angle launched created another 0.5in variation in POI at 100yds but it persists beyond 100yds. The measured group might be as large as 1in or 1MOA. At 200yds the tilt still only caused 0.5in or 0.25MOA. The angle launched is still 0.5MOA so perhaps we see a 0.75MOA group. At 400yds we are down to 0.625MOA assuming other factors don't start to creep in. The shrinking in group size would only appear in certain conditions. Again, all just a giant what if! Good chance it is all just ******** because nobody has proven it in a shoot through situation. I just keep thinking about it in the context of my bow. [/QUOTE]
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