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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Weird trajectory issue
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<blockquote data-quote="ATH" data-source="post: 1084891" data-attributes="member: 1656"><p>I have a 358 WSM 1.8". This is an odd cartridge created to maximize the performance allowed under Indiana's unique deer cartridge regs which dictate minimum .357 bullet diameter and maximum 1.8" case length. This particular gun is throwing the 225gr Accubond at 2770 fps. The barrel was chambered and installed on the action by a very reputable smith. I bedded the rifle and did all the other work myself.</p><p></p><p>The accuracy is good, but not spectacular, .5-.8 MOA on average. The Bushnell Tactical scope is set in Burris Tactical rings with the +/- 10 ring inserts to add MOA to the range (scope canted down at the front) on a flat Picatinny base.</p><p></p><p>The weird thing I am experiencing is that the gun is shooting essentially the same zero at both 100 and 200 yards. Then 2.5 MOA low at 300 yds, from the 200 yd zero.</p><p></p><p>In practical terms, this is a good thing as a round with relatively poor ballistics becomes a 300 yd point-blank gun. But the physics of it has me somewhat stymied. I've verified this numerous times, it is not an artifact.</p></blockquote><p></p>
[QUOTE="ATH, post: 1084891, member: 1656"] I have a 358 WSM 1.8". This is an odd cartridge created to maximize the performance allowed under Indiana's unique deer cartridge regs which dictate minimum .357 bullet diameter and maximum 1.8" case length. This particular gun is throwing the 225gr Accubond at 2770 fps. The barrel was chambered and installed on the action by a very reputable smith. I bedded the rifle and did all the other work myself. The accuracy is good, but not spectacular, .5-.8 MOA on average. The Bushnell Tactical scope is set in Burris Tactical rings with the +/- 10 ring inserts to add MOA to the range (scope canted down at the front) on a flat Picatinny base. The weird thing I am experiencing is that the gun is shooting essentially the same zero at both 100 and 200 yards. Then 2.5 MOA low at 300 yds, from the 200 yd zero. In practical terms, this is a good thing as a round with relatively poor ballistics becomes a 300 yd point-blank gun. But the physics of it has me somewhat stymied. I've verified this numerous times, it is not an artifact. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Weird trajectory issue
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