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Brian Enos's Forums... Maku mozo!

Mover settings


Smallbore

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I set mine up for 15 yards first but then checked the other distances. It was easier for me to see and measure more accurately because you can usually shoot one hole at that distance. I shoot off a rest at the back of a Bianchi target marked with an vertical line of 1/2 inch electrical tape. Once you set the lead for one distance you should be good to go at the other distances, but check them. The inches of lead will increase the farther you are from the target.

The formula is: (distance to target in feet divided by bullet speed in fps) x speed of target in inches/second = lead amount in inches.

Example:

115 super at 1100 fps

25 yard line (75 feet)

target speed at 10 ft/sec = 120 inch/sec

(75 divided by 1100) x 120 = 8.18 inches of lead

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It's easiest if you have access to a Ransom Rest, and it can be set without firing a shot, but both systems above will work fine. Once it's set for any distance for the ammo velocity you use, it works for all distances. Here's a chart that will help:

Lead Factor for Moving Target


Formula: D / V x 120 = L
D = Distance to target in feet
V = Velocity of bullet in feet-per-second (fps)
120 = Assumed target speed of 10 fps
L = Lead factor in inches

Distance to center from edge of X- ring = 2"
10-ring = 4"
8 - ring = 6"
target = 9"

800 fps 10 yds - 4.5" 850 fps 10 yds - 4.24"
15 yds - 6.75" 15 yds - 6.35"
45 min. 20 yds - 9.0" 42.5 min. 20 yds - 8.47"
25 yds - 11.25" 25 yds - 10.59"
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
900 fps 10 yds - 4.0" 950 fps 10 yds - 3.79"
15 yds - 6.0" 15 yds - 5.68"
40 min. 20 yds - 8.0" 37.9 min. 20 yds - 7.58"
25 yds - 10.0" 25 yds - 9.47"
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1000 fps 10 yds - 3.6" 1050 fps 10 yds - 3.43"
15 yds - 5.4" 15 yds - 5.14"
36 min. 20 yds - 7.2" 34.3 min. 20 yds - 6.86"
25 yds - 9.0" 25 yds - 8.57"
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1100 fps 10 yds - 3.27" 1150 fps 10 yds - 3.13"
15 yds - 4.91" 15 yds - 4.7"
32.7 min. 20 yds - 6.55" 31.3 min. 20 yds - 6.26"
25 yds - 8.18" 25 yds - 7.83"
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1200 fps 10 yds - 3.0" 1250 fps 10 yds - 2.88"
15 yds - 4.5" 15 yds - 4.32"
30 min. 20 yds - 6.0" 28.8 min. 20 yds - 5.76"
25 yds - 7.5" 25 yds - 7.2"

The MOA doesn't change enough over the distances we shoot to matter. Velocity loss at 25 yds should be negligible if not non-existent. You'll notice that at velocities below 1000 FPS, your 25-yard aiming point is off the target @ 25 yds for setup.

Edited by Alan550
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9000 divided by bullet speed is the formula.

Therefore per Alan550, 9000 / 1150 = 7.82" or 198.7826086956522mm or thereabouts.

I like goldfield shooter only set up at 25Yards, everything else is easy. I use the Barricade to help set it up and then sight in properly at 25Y standing to ensure it is all working better than I can shoot it.

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I read it wrong then! If he'd posted it as "9000/bullet speed" maybe this ole country boy would have understood it. That bullet speed being on the next line down had me befuddled.............where I spend more & more time lately it seems! :goof:

I like your formula better than mine............simpler!

Edited by Alan550
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For me, having roughly 9" of lead at 25yds with a bullet speed of 980fps (I shoot 147's in my 38Stupid, against all advice), I set mine up to clip the edge of the stationary target at 25 from a bench. It took maybe 20 minutes to get dialed in. Easy enough. People focus so much on lead, when I see the majority of people drop points on vertical.

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That's Ichiro Nagata. He's a well known gun writer and photographer in California. They do what we do in Japan only with airsoft guns. They have Stickshifts on the airsoft guns and shoot Bianchi with them. The distances are much shorter, targets are smaller, but they do barricade and mover like we do here.

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@toolguy

I know the name of Iciro Nagata and have seen some youtube video's of him... didn't recognise him in the video.

since you are interested in gunsmithing :-) look at te following video @4min40, see how far he went with the internal lightening of that slide. the disconectortrack is verry small

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Thanks for that! About 5:30 you can see the swab in the firing pin hole where material has been machined off the disconnect track! Ichi and the Japanese in general are very interested to keep up on all the latest developments and always trying new things and pushing the envelope.

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