Bottom up laser for calculating hold over on really close shots

[sendler2112]

You can add a "bottom up" laser somewhere under the barrel to help calculate the holdover for ultra close shots from 6-20 yards without clicking. Scope height 2.2" zeroed at 20 yards, laser height -1.8 inches zeroed at 18 yards. Sight through the scope. If the laser is below the center, aim exactly halfway between the laser and the crosshairs. if the laser is above the center, aim with the crosshairs which will be 1/4 inch low at 17 yards, 1/4 high at 30, 1/4 low at 43 as the pellet flies through the arc. This is just an example which will depend on your pellet and velocity (JSB 18.1 gn at 880 fps), and scope height. You would need low magnification to see the laser at 6 yards which would require 7 mils of hodover. So 15 mils of visible holdover in the reticle. A first focal plane reticle is not required since you don't have to calculate anything in real scale. just split the difference and shoot.

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I haven't tried it yet but always wanted too since I have many shots in barns under 8 yards, I click down to 12 yards and hold over 3 mils

I would have to look at some of my scopes to see if any of them have the available field of view on low power to show 15 mils

blue line is the impact point on the flight path, green line is the laser.

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[Scotchmo]

If there was a laser that could be mounted 1/2” above the bore-line, it could be sighted for about 23yds and with anything from 6yd to 25yds you could hold it dead-on.

 

[sendler2112]

Tie straps and clear silicon rubber.

 

[PumaCarl]

Lasers are very handy. I always mount one now when changing scopes. I'll match the laser to the current reticle, take off/put on other scope and match to laser dot, -and done! No more wasting pellets or time.

 

[MartinT]

Lasers are very handy. I always mount one now when changing scopes. I'll match the laser to the current reticle, take off/put on other scope and match to laser dot, -and done! No more wasting pellets or time.

Pure ingenuity! Really smart thinking, i love it!

 

[PumaCarl]

Thanks! They are also handy for checking scope turret clicks. You don't have to mount your gun in a vice this way. Check your clicks against the laser dot and you will know fast if your scope is junk. This is mostly done when checking low quality scopes, of course, but handy none the less.

 

[JungleShooter]

I'm thinking of mounting two lasers —

one for "regular" ranges, in red — 

one for "extremely close" ranges, in green. 

That way I get two zeros, and a third zero in the middle between the red and the green laser dots.



Now I still need two things:

(1) Recommendations for laser brands and models that hold zero (without braking the bank).

(2) A strategy to convince my wife I really NEED these lasers....  



Matthias

 

[sendler2112]

Leapers for $32

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https://leapers.com/index.php?act=prod_detail&midx=2208&allids=2205_2208&itemno=SCP-LS268

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[JungleShooter]

Thanks for the link, Sendler.



I like the small size.

I wonder — is this the highest power (legally available) for a laser?

I guess I'd be looking for one with an external switch that I can push with my finger on the grip....

Matthias

 

[sendler2112]

Most of these include a remote pressure switch even though it is not pictured. They all seem to be 5 mW. Green might be brighter to see in the day but cost twice as much.

or get a 10" Remote pressure switch

.https://www.opticsplanet.com/beamshot-laser-sight-accessories-ct.html?_iv_code=BM-LA-CT-BMCT2



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