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Two zeros or one?

Forums General Discussion Two zeros or one?

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    josh3rd
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    Member
    United States
    Accuracy: +6

    My RX2 is I guess a hunting/pesting rig. I use it for plinking/target shooting too but her cocking effort is strenous after a while and she's accurate for long range plinking. With that said, what is a recommendation for zeroing…at the apex which is how I have my Prosport and AirKing or should I just use the optimum zero. For hunting I would think the optimum zero is more useful I guess. It shoots the jsb's at 755fps and chairgun suggests a near zero of 15yds and a far zero of 37yds and apex zero of 26yds for a 1 inch KZ. I know it's all preference but hearing from others and how their rigs are set up is always welcoming.  Oh yeah it has a Bushnell Engage  4-12 with a deploy moa reticle.  I do know that zero'd at 26yds (apex) my drops are lower than the optimum zero'd ones

     

    (cross posted)

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    ptthere
    Participant
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    United States
    Accuracy: +8

    Personally I have never had a problem with the "two zero" method. The elevation difference between the zeros and the Apex is usually always the flattest overall distance in your ballistic curve, which makes it the most predictable. I suppose if you know exactly what your Apex is, you could zero to that but then you will just have more holdover for EVERYTHING but that. Different strokes for different folks, but I personally wouldn't prefer that unless I was shooting long-range where everything at or beyond the target was dropping anyway.

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    josh3rd
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    United States
    Accuracy: +6

    Good feedback ptthere, thanks

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    Motorhead
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    United States
    Accuracy: +80

    As a FT shooter we do a SINGLE zero …… needing to do some "Hold Under" at mid distance where every place else is Hold Under along with two point of zero hold WILL SCREW YOU UP !!

     

    Far better IMO too have hold over to the Zero range and then hold over again beyond it.  Keeps it simple, faster and less prone to a brain fart.

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    Airgun-hobbyist
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    United States
    Accuracy: +20

    For hunting/pesting purposes, I would choose my zero so it would shoot the flattest trajectory within the range I shoot the most in (with two zeros), and then use the reticle to hold over for longer ranges or dial the turret.

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    josh3rd
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    United States
    Accuracy: +6

    Motorhead that's how I have my Prosport and 54. I think I'll be going that route. P.S. my delrin guides you made for the fac and 12ft/lb Prosport spring via Nitrocrushr have been holding up and performing splendidly.  Does any of your springer change much from rising  temperatures? Of so, how do you or what should I do to counteract the problem/issue? 

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    josh3rd
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    Accuracy: +6

    Thanks for the feedback hobbyists

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    Airgun-hobbyist
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    United States
    Accuracy: +20

    I use Strelok Pro, and just plugged in 755 FPS (with mymscope height though) so  your app may be a little bit different, but at say a 45 yard crosshair zero would give you about a 3/4" up and down trajectory change between 10 and 51 yards.  With two zeros being at 16 and 45 yards.  That's a pretty flat area to work within.

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    josh3rd
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    United States
    Accuracy: +6

    My height is right at 2.0625" but out of curiosity what's it say about a 1/2" above/below los

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    Airgun-hobbyist
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    United States
    Accuracy: +20

    Using your numbers, having .55" over and under deviations from zero, puts the zeros at 15.5 and 40 yards, and pretty flat 1/2" from 10 yards to 45 yards. 

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    josh3rd
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    United States
    Accuracy: +6

    Thanks man. I wish I had a computer instead of a phone sonic could use the scope cap print option and/or the option of putting my drop/poi numbers on the reticles and print them out. Chairgun seems not to give android everything like when you are looking at it on a laptop

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    Motorhead
    Participant
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    United States
    Accuracy: +80

    Look at it this way ….  say your hunting where we are shooting at a Rabbits head or a Squirrel

    Your POA is only 1/2" or less from the top of there head and if a shot go's high you may miss all together !

    By having a distance that your pellets trajectory is ABOVE your zero creates an OVER SHOOT situation & in the Field or FT you really don't want that.

    Having a single zero the worst case situation is you hit a tad low but still connect !!

     

    * in larger game that +/- 1" of zero range variance may very well stay inside what one would determine as a kill zone …. small game small target not so much.

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    josh3rd
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    Accuracy: +6

    Thanks brother. Im just going to follow what I'm use to. That is a single zero at my apex

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    JCD
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    Accuracy: +21

    I'll be the antagonist…I use 2 zeros for FT and Hunting (just occasional pesting).I can't address other variables but here's my world… with my 2x 18-18.5fpe ;177's with Aztec scopes set on 16x my zero's are 25 and 40y, Less than a dot over zero at the apex, and less that a dot under from 20-25. So…. that's nearly 20 yards within a dot over/ under and with target sizes in that range in FT it isn't the aim that causes a miss (at least with my reticle). Scopes/zeros/power levels/shooting styles… so many  variables.  I'm guessing your springs are between 11 and 14 FPE. That will def change things.

    Nothing better to convince YOU of what YOU like, than sitting out a bunch or targets every 1 or 2 yards. I'm looking at 15 in my driveway right now.

     

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    AirNGasman
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    United States
    Accuracy: +42

    I grew up using the two-zeroes method, and old habits die hard. Especially when you don't try to kill them; rather, choose to perfect them.

    Mo mentions that FT shooters use the single-zero method, but not all FT shooters do. I've been very successful in Hunter Class (rifle and pistol) field target by sighting-in so the apex POI is never more than some (acceptable) fraction of an inch above point-of-aim, thereby enjoying less hold-over on (both) the short and long targets; same as in hunting scenarios.

    But you must consider the source of this opinion, a self-described Throw-Back, Neanderthal, Techno-Grouch whose FT 'pistol' was converted from a 1960s-vintage Crosman C02 rifle (with many titles to its credit, BTW).

    All these (8) State and (6) National Champion FT titles were captured with the two-zeroes method.

      

    BTW, I freely admit to being an exception to the rule(s); but believe success has more to do skill, preparation, and intimate familiarization with One's chosen equipment and techniques than it does any particular equipment or technique. MANY competition shooters spend fortunes in $$$ and precious trigger-time (wasted) exploring endless equipment options when they would be better off building skills and intimate familiarization with their rig(s). 

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    Motorhead
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    United States
    Accuracy: +80

    Ron,

    Was trying to avoid the sharing of valid information with "because I've done this" as support for validating ones opinion.

    Lets leave at knowing the 2018 & reigning AAFTA "Hunter Pcp" Gran Prix champion & 2017 AAFTA Nationals High point champion shot with a single zero range.

     

    So both work … IF YOUR HEADS IN THE GAME !

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    AirNGasman
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    Accuracy: +42

    Agreed SS, I'm not trying to one-up anyone in this thread; simply present a dissenting opinion. That's why I felt compelled to include the qualifier, "BTW, I freely admit to being an exception to the rule(s)". Hope you don't and didn't take it wrong.

    Don't recall if I made it clear when I met and congratulated you at Nats in Phoenix, but I consider your performance one of the most impressive I've witnessed.

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    josh3rd
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    United States
    Accuracy: +6

    I appreciate everyone's opinions and feedback. It's greatly appreciated.

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    Motorhead
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    United States
    Accuracy: +80

    AirNGasman

    Agreed SS, I'm not trying to one-up anyone in this thread; simply present a dissenting opinion. That's why I felt compelled to include the qualifier, "BTW, I freely admit to being an exception to the rule(s)". Hope you don't and didn't take it wrong.

    Don't recall if I made it clear when I met and congratulated you at Nats in Phoenix, but I consider your performance one of the most impressive I've witnessed.

    Ron, we're all good …. big kids with BB guns all in a common sand box.

    Thank you …

     

    Scott S

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    josh3rd
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    United States
    Accuracy: +6

    Ok everyone last question…in your opinions, rx2 20cal shooting jsb's @ 755fps, 4-12x Bushnell Engage w/moa deploy reticle and scope height of 2.0625" and I'm going to zero at my apex. The question now is what size kill zone: 1in, 3/4in or 1/2in for pesting, hunting and target shooting(non competition type, maybe lol)

     

    Cross posted

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