Parallax question - dilema

Boom I just take the shot as is . I am picky as I can be about parallax error . But under hunting conditions you realize the error is actually pretty small . I had a very goo d friend miss a chance at a Great whitetail deer when first started bowhunting together because his range finder was reading 18 yards and 19 yards and would stop going back and forth ...Eventually the deer just walked off ....I ask why didn't you shoot ? His answer was he didn't know where to aim because it would not register right . Seems silly , but he is was dead serious . ...
Next time set up at 50 and set parallax and then move to 30 yards. You will see the error is still inside a squirrels head .

You are talking about Focussing Boombots - 'Parallax' only happens when one of the 'elements' in a Telescopic sight moves (in relation to the other two) this would be your head (or anyone's) head - it's down to simple Math &/or Geometry (related to the scope's reticle being about 2" away from your eye whilst the 'Target' is 20 yard plus).

By all means you should seek to obtain a clear sight image of your Target, but when all else is equal (as the scientists like to say ) it will not affect the Point of Impact for the Object / Target to be slightly out of Focus.

Remember this only:

Your riflescope DOES NOT STEER YOUR RIFLE, THE RIFLE STEERS THE SHOT. You should know the difference (of POI) for your rifle between 50 yards and 20 yards (THIS IS A MUST FOR HUNTERS OF LIVE QUARRY) twiddling knobs or rings on your scope does not change that, but you might get a clearer image.


Incidently, the same applies to shooting with Iron Sights - as it is totally impossible to focus both on the rear and fore sight it is generally suggested that one focusses on (or uses) the Fore Blade and the Target (with the rear notch being slightly hazy) - very good marksmen acheive this feat largely thro' 'Muscle Memory' or repeating the correct cheek weld.

Hey boom. If you give another squirrel a mohawk I think I can speak for everyone here at airgun Nation. We'd love to see a picture LOL

Kick Ass Man !!! Looking fwd to it

Providing you dont 'move the camera around' you will see zero parallax 'error' in that situation because all 3 elements will be lined up correctly.

So, not moving the camera at all try adjusting the focus (AO or Side) over the entire range whilst the scope is centered on a target (gun in vise. obviously). There will be NO Parallax movement; I have yet to meet a scope with such awful lens carriers that moving the Objective lens* wobbles the image, (Mag. changes or Zoom can cause problems on many scopes for the simple reason that the lens being moved is very close to the eye).

You could then try shooting some pellets (if it's a PCP and the gun vise is sturdy) - it wont matter a tad whether the scope is reading 20 yard, 40 yard or 80 yard the pellet will hit that static target approx -) ) in the same spot, however the image recorded might be fuzzy.

I use the word 'Fuzzy' deliberately


*Or Field lens.

​The guys from Leupold explain the differences in parallax. In the example, at about 5:40 into the video, he explains that the parallax deviation on the scope is 44mm. at 600 yards it's 88mm. If dealing with parallax between 50 and 25 yards, I suspect the deviation will be in the 5 or 10mm range. That's .2 to .4 inches. under half inch deviation.

​You might want to set targets up at the various ranges with reference lines to confirm how much deviation happens at 15, 50 and 75 yards when you set parallax at 50. Obviously, 50 should be no deviation, but see what happens with your scope at 25 and 75. I'm interested in the results.

​In the end, I don't have time to adjust the parallax when quarry is in the sights, I'd just take the shot.

OK, now I feel stupid. While my numbers are correct, a quick google search turned a Parallax Error Chart
https://www.lelandwest.com/parallax-error-calculator.cfm

​For my scope with a 44mm objective lens (yes, that makes a difference)
Parallax set at 50 yards
​Minimum distance 25 yards
Max distance 100 yards

​25 yard possible error: 11mm or .43 inches
​75 yard possible error: 11mm or .43 inches


​So, if you have a smaller objective lens, the parallax is smaller.

​A 32mm objective yields a possible error of 7.5mm or .295 inches.

I'd just take the shot.

Thank you for posting that parallax error calculator link . The 75 yard parallax setting on my 1-4x20 leupold shotgun scope on my dragon claw dose not have any were near enough parallax error to be an issue on a deer size killzone . It has been working out well the past couple years but I was curious if there was enough parallax error to justify sending it in to have leupold adjust it to 50 yards .

It will be helpful while shopping for a scope for my dragon slayer since the Simmons shotgun scope I have on it dose not have enough eye relief and needs to be replaced .