Target dimensions, scoring and accuracy
Posted: Wed Sep 29, 2004 10:51 am
I shoot Highpower rifle, but I am getting interested in air rifle for practice and convenience. In Highpower (for standing) we have a 1.5 moa X-ring, 3.5 moa 10-ring and a 6.5 moa 9-ring. The size of the bullet hole compared to the scoring rings is small (7 inch 10 ring @ 200 yards) so the "effective" size of the scoring ring (7.11") is not increased much when scoring a "scratch" 10.
After looking at the 10 meter air rifle targets I have some questions. Since the 10 ring (dot) is 0.5 mm and the pellets are 4.5 mm in diameter, am I correct in saying that the "effective" size of the 10 ring is 5.0 mm? That is, if I place the center of the pellet hole within 2.5 mm of the center of the target it will scored as a 10, since it will touch the center dot? Likewise the "effective" size of the 9-ring would be 10.0 mm, since a shot centered 5.0 mm from the center would still touch the 5.5 mm 9-ring?
If this is correct, this would translate into an "effective" 1.7 moa 10-ring and 3.4 moa 9-ring, which makes it almost the same as the dimensions on the Highpower target. This would seem to suggest that the level of difficulty would be similar between these two disciplines.
A rifle capable of shooting less than 1 moa groups is essential for Highpower competition, with a rifle approaching 1/2 moa being more desireable. I read that the Daisy 853 "can hold the 7-ring" from a bench rest. If this means only scoring 7's that would translate to an almost 6.9 moa grouping, pretty horrible. If this means keeping the entire pellet hole inside the edge of the 7-ring this would be slightly less than a 3.8 moa grouping, which would be almost enough to score 9's as a minimum. Since the 4.5 mm pellet is 1.5 moa wide an air rifle would have to shoot clover leafs to achieve a 1.0 moa group. I know the Daisy 853 has been used by many youth groups. What kind of accuracy should be expected from this rifle? Thanks.
After looking at the 10 meter air rifle targets I have some questions. Since the 10 ring (dot) is 0.5 mm and the pellets are 4.5 mm in diameter, am I correct in saying that the "effective" size of the 10 ring is 5.0 mm? That is, if I place the center of the pellet hole within 2.5 mm of the center of the target it will scored as a 10, since it will touch the center dot? Likewise the "effective" size of the 9-ring would be 10.0 mm, since a shot centered 5.0 mm from the center would still touch the 5.5 mm 9-ring?
If this is correct, this would translate into an "effective" 1.7 moa 10-ring and 3.4 moa 9-ring, which makes it almost the same as the dimensions on the Highpower target. This would seem to suggest that the level of difficulty would be similar between these two disciplines.
A rifle capable of shooting less than 1 moa groups is essential for Highpower competition, with a rifle approaching 1/2 moa being more desireable. I read that the Daisy 853 "can hold the 7-ring" from a bench rest. If this means only scoring 7's that would translate to an almost 6.9 moa grouping, pretty horrible. If this means keeping the entire pellet hole inside the edge of the 7-ring this would be slightly less than a 3.8 moa grouping, which would be almost enough to score 9's as a minimum. Since the 4.5 mm pellet is 1.5 moa wide an air rifle would have to shoot clover leafs to achieve a 1.0 moa group. I know the Daisy 853 has been used by many youth groups. What kind of accuracy should be expected from this rifle? Thanks.