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The Basics, Starting Out
Nice groups at 100, 200 no groups..
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<blockquote data-quote="DJ Fergus" data-source="post: 1970243" data-attributes="member: 93895"><p>I would say that your scope is good enough if you one hole at 100yds. Even your velocity extreme spread wouldn't cause this much variance at 200 yards. To check your twist rate: If you have a cleaning rod & jag, put a patch on your jag & get it started into the bore a couple of inches or more. Then mark something at top dead center ( directly up) on your rod near the handle end that is fixed and will turn with the rod as it turns when you are pushing it through the bore. Take a measurement from the rear of the receiver to a fixed point near the handle end of your rod. Push the rod with patch through the bore until your mark at top dead center makes a full 360 degree revolution back to top dead center again. Take a measurement between the two points you took a measurement from the first time. Subtract this measurement from your first measurement. This will tell you your twist rate. For example first measurement was say 26.75" and your second measurement was 15.75". This would mean you have an 11 twist. 1 turn in 11 inches. Take your measurement more than one try to be sure nothing is slipping and you are getting nearly the same measurement each time. This is easy to do once you get the hang of it. I would be willing to bet that your twist rate is actually slower than 10. Maybe 11, 12 or more.</p></blockquote><p></p>
[QUOTE="DJ Fergus, post: 1970243, member: 93895"] I would say that your scope is good enough if you one hole at 100yds. Even your velocity extreme spread wouldn't cause this much variance at 200 yards. To check your twist rate: If you have a cleaning rod & jag, put a patch on your jag & get it started into the bore a couple of inches or more. Then mark something at top dead center ( directly up) on your rod near the handle end that is fixed and will turn with the rod as it turns when you are pushing it through the bore. Take a measurement from the rear of the receiver to a fixed point near the handle end of your rod. Push the rod with patch through the bore until your mark at top dead center makes a full 360 degree revolution back to top dead center again. Take a measurement between the two points you took a measurement from the first time. Subtract this measurement from your first measurement. This will tell you your twist rate. For example first measurement was say 26.75" and your second measurement was 15.75". This would mean you have an 11 twist. 1 turn in 11 inches. Take your measurement more than one try to be sure nothing is slipping and you are getting nearly the same measurement each time. This is easy to do once you get the hang of it. I would be willing to bet that your twist rate is actually slower than 10. Maybe 11, 12 or more. [/QUOTE]
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The Basics, Starting Out
Nice groups at 100, 200 no groups..
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