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Varmint Hunting
.220 Swift
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<blockquote data-quote="bowhunthard88" data-source="post: 264966" data-attributes="member: 12575"><p>Yeah, thanks. I know that there are several "nodes" as the powder charge increases/decreases that the accuracy fluctuates in. I've seen this in all my guns. You're right about the 0.1 gr increments too, I played with my .222 Rem a while before I figured this out.</p><p> </p><p>Right now, the only thing holding me back is the temp. 3700 fps is stated as max for 52gr bullets in the Hornady manual. I'm using a "3650 loading" but the reading I posted was actually chronographed at 33 degrees. This gun will be a summer chuck gun, so humid 80's will be the norm. I hesitate to work up a max load a 50 degree colder temp than what it will be used for.</p><p> </p><p>This is 1:14" twist, so lighter bullets must be used in this than in Tom's. Although I had a gunsmith tell me to shoot the 60 gr. Hornadys out of this barrel because of the throat.</p><p> </p><p>Thanks.</p></blockquote><p></p>
[QUOTE="bowhunthard88, post: 264966, member: 12575"] Yeah, thanks. I know that there are several "nodes" as the powder charge increases/decreases that the accuracy fluctuates in. I've seen this in all my guns. You're right about the 0.1 gr increments too, I played with my .222 Rem a while before I figured this out. Right now, the only thing holding me back is the temp. 3700 fps is stated as max for 52gr bullets in the Hornady manual. I'm using a "3650 loading" but the reading I posted was actually chronographed at 33 degrees. This gun will be a summer chuck gun, so humid 80's will be the norm. I hesitate to work up a max load a 50 degree colder temp than what it will be used for. This is 1:14" twist, so lighter bullets must be used in this than in Tom's. Although I had a gunsmith tell me to shoot the 60 gr. Hornadys out of this barrel because of the throat. Thanks. [/QUOTE]
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