21 Shot Blackpowder group
Not your ordinary 21 shot group:
GUN/LOAD
38-55 Oliver F. Winchester
Open sights
250 gr. Lee bullet
42 gr. Goex FFG
1225 FPS
29" Bullet drop from 100 yds to 200yds
CONDITIONS
60 degrees F
5-10 mph wind (right to left)
1 shot @100 yds
1 shot @105 yds .7" drop
1 shot @110 yds 1.5" drop
1 shot @115 yds 2.3" drop
1 shot @120 yds 3.2" drop
1 shot @125 yds 4.2" drop
1 shot @130 yds 5.3" drop
1 shot @135 yds 6.4" drop
1 shot @140 yds 7.6" drop
1 shot @145 yds 9.0" drop
1 shot @150 yds 10.3" drop
1 shot @155 yds 11.8" drop
1 shot @160 yds 13.4" drop
1 shot @165 yds 15.0" drop
1 shot @170 yds 16.7" drop
1 shot @175 yds 18.5" drop
1 shot @180 yds 20.4" drop
1 shot @185 yds 22.4" drop
1 shot @190 yds 24.5" drop
1 shot @195 yds 26.6" drop
1 shot @200 yds 28.9" drop
Normal 10-shot 100 yd group is approx. 3"
100-200 yd Group measures 3.625 verical (adjusted sight for elevation) X 6.75 horizontal (Did not aim over for windage)
What the purpose of the group was to test a new sight I invented. For years I tried available receiver & tang sights so that I could use my low velocity open sight guns for hunting, but always ended up leaving these in the gun cabinet when the hunting season began as I could only trust these to about 125 yds aiming on & adjusting them took too much time that I might lose my opportunity to shoot.
So I came up with a receiver sight (tang sights always seem in the way on a levergun) that compensates for bullet drop. It uses an interchangeable cam that is profiled to match the trajectory of my gun & load (with click settings spaced @ 5yd intervals and profile calculated to 1 yd intervals) which is interchangeable, so I could use a different load if desired by swapping cams.
The target represents my first test of this. The second test came in deer season:
When I saw a deer sneaking thru the bush about to come into a hole in the bush. I didn't have time to range the distance but as I had been using the rangefinder all morning in the area I estimated 150 yds, adjusted to that distance & took the shot. Then I took the rangefinder out to check the distance - 152 yds. I felt confident of the shot and the result was a heart hit & dead deer found within 50 yds that I would have missed or wounded if I had "aimed on" with any of the previous store bought sights I had used (drop was 11" @ 152 yds)
Here's a link to a video showing the sights in use
http://www.youtube.com/watch?v=kR6EJV6zGRc
Not your ordinary 21 shot group:
GUN/LOAD
38-55 Oliver F. Winchester
Open sights
250 gr. Lee bullet
42 gr. Goex FFG
1225 FPS
29" Bullet drop from 100 yds to 200yds
CONDITIONS
60 degrees F
5-10 mph wind (right to left)
1 shot @100 yds
1 shot @105 yds .7" drop
1 shot @110 yds 1.5" drop
1 shot @115 yds 2.3" drop
1 shot @120 yds 3.2" drop
1 shot @125 yds 4.2" drop
1 shot @130 yds 5.3" drop
1 shot @135 yds 6.4" drop
1 shot @140 yds 7.6" drop
1 shot @145 yds 9.0" drop
1 shot @150 yds 10.3" drop
1 shot @155 yds 11.8" drop
1 shot @160 yds 13.4" drop
1 shot @165 yds 15.0" drop
1 shot @170 yds 16.7" drop
1 shot @175 yds 18.5" drop
1 shot @180 yds 20.4" drop
1 shot @185 yds 22.4" drop
1 shot @190 yds 24.5" drop
1 shot @195 yds 26.6" drop
1 shot @200 yds 28.9" drop
Normal 10-shot 100 yd group is approx. 3"
100-200 yd Group measures 3.625 verical (adjusted sight for elevation) X 6.75 horizontal (Did not aim over for windage)
What the purpose of the group was to test a new sight I invented. For years I tried available receiver & tang sights so that I could use my low velocity open sight guns for hunting, but always ended up leaving these in the gun cabinet when the hunting season began as I could only trust these to about 125 yds aiming on & adjusting them took too much time that I might lose my opportunity to shoot.
So I came up with a receiver sight (tang sights always seem in the way on a levergun) that compensates for bullet drop. It uses an interchangeable cam that is profiled to match the trajectory of my gun & load (with click settings spaced @ 5yd intervals and profile calculated to 1 yd intervals) which is interchangeable, so I could use a different load if desired by swapping cams.
The target represents my first test of this. The second test came in deer season:
When I saw a deer sneaking thru the bush about to come into a hole in the bush. I didn't have time to range the distance but as I had been using the rangefinder all morning in the area I estimated 150 yds, adjusted to that distance & took the shot. Then I took the rangefinder out to check the distance - 152 yds. I felt confident of the shot and the result was a heart hit & dead deer found within 50 yds that I would have missed or wounded if I had "aimed on" with any of the previous store bought sights I had used (drop was 11" @ 152 yds)
Here's a link to a video showing the sights in use
http://www.youtube.com/watch?v=kR6EJV6zGRc
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