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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Anyone Shooting Wildcat 338 252gr RBBTs
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<blockquote data-quote="royinidaho" data-source="post: 79285" data-attributes="member: 2011"><p>Got the bedding straightened out. Rifle started acting like a rifle again instead of a shot gun.</p><p></p><p>Loaded WC 252s in the 338 Win w/75gr RL-22 in several times fired full length resized cases.</p><p></p><p>First group was pretty large with the bullets seated a few thou off the riflings. COL = 3.416 or so to the bullet tip.</p><p></p><p>Shortened the COL "a bit" down to 3.305 just a random setting.</p><p></p><p>Group went 1.1 moa.</p><p></p><p>Upped the powder 0.5gr. Group expanded a sizeable amount.</p><p></p><p>Lowered the powder to 74.5gr and WAA LAA group too small to mention. /ubbthreads/images/graemlins/cool.gif</p><p></p><p>With the long seat I get 2865 or so. The Wildcat 252 shoots ~40 FPS faster than the Sierra 250 SPBT with all things being equal. I think this is due to the much shorter bearing surface. The two bullets are about the same length.</p><p></p><p>With the short seat the WC goes right at 2800. I'll chrono to make sure before I shoot for drop chart development.</p><p></p><p>The question is: do I care about the 50 or so FPS loss for the increased consistency when anticipating shots out to 850 yds or so /ubbthreads/images/graemlins/confused.gif</p></blockquote><p></p>
[QUOTE="royinidaho, post: 79285, member: 2011"] Got the bedding straightened out. Rifle started acting like a rifle again instead of a shot gun. Loaded WC 252s in the 338 Win w/75gr RL-22 in several times fired full length resized cases. First group was pretty large with the bullets seated a few thou off the riflings. COL = 3.416 or so to the bullet tip. Shortened the COL "a bit" down to 3.305 just a random setting. Group went 1.1 moa. Upped the powder 0.5gr. Group expanded a sizeable amount. Lowered the powder to 74.5gr and WAA LAA group too small to mention. [img]/ubbthreads/images/graemlins/cool.gif[/img] With the long seat I get 2865 or so. The Wildcat 252 shoots ~40 FPS faster than the Sierra 250 SPBT with all things being equal. I think this is due to the much shorter bearing surface. The two bullets are about the same length. With the short seat the WC goes right at 2800. I'll chrono to make sure before I shoot for drop chart development. The question is: do I care about the 50 or so FPS loss for the increased consistency when anticipating shots out to 850 yds or so [img]/ubbthreads/images/graemlins/confused.gif[/img] [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Anyone Shooting Wildcat 338 252gr RBBTs
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