Different POI's from different holds

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josh3rd

josh3rd

Member
Apr 2, 2015
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Newark, Delaware, United States
I know that when shooting springers that the slightest change in hold will alter your point of impact. For example I shoot Hunter class or hunter piston classs. Lord forbid I don't say it right because some people love to correct others saying its not HFT and so on but anyway I shoot Hunter piston class with bucket and sticks. I know that at 10 yards with my air arms Pro Sport shooting air arms field diabolos which are 8.4 grains at 785fps that at a 10-yard target I am three mil dots down on my 16 powered Hawke Airmax 30 SF. At that same target at 10 yards if I am shooting standing with the only support is my hand my point of impact is only one mildot low. So I just like to know for all you Springer Shooters out there what is your differences if there is any. Thank you
 
I've used a couple different rifle resting points with my .177 HW95 and .177 Beeman R9. One support point I played with was placing the cross stick at the balance point near the trigger guard and the other at the stock forearm mounting screws like this...............





When supporting near the balance point the poi will be higher relative to the aim point than when the support is at the stock forearm screws. More of The weight of the gun is supported by the shoulder and the cross sticks when placed at the stock forearm screws which tends to "hold the gun down". Supporting the gun near the balance point on the other hand allows the muzzle to "jump higher" with the piston recoil. None of my cross stick resting points give the same poi as when I'm shooting offhand which is why all my "field offhand shooting" is done at less than 30 yards, but then I'm a terrible "off hander" (or kneeler). 




 
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I just shat a target upstairs at 18 yards. The 5 shot group was shot using the exact balance point of my HW95 w/scope and mounts. Supporting the gun on the cross stick so close to my shoulder (the exact balance point) made it very hard for me to hold the gun steady since " & all" movement on the bucket was magnified by the short cross stick to shoulder pivot point. The 6 shot group was done by supporting the gun with the cross stick at the stock forearm screws. This put the balance of gun's weight shared by two points (my shoulder and the cross stick) rather than a single point. Also since the cross stick and my shoulder were farther apart my "swaying on the bucket" wasn't magnified as much..............



Anywhoo, not the best 18 yard groupings I've done (rather shaky on the bucket tonight) but the two groups do show that the vertical difference between the groups from the two cross stick support points was 3/8" with my .177 HW95 shooting CPLs at 12fpe. If the fpe (or distance) was greater there would have been a larger vertical spread.

As a side note, the diamonds are 3/16" side to side and 1/4"ish point to point. LOL....the groups also show that I need to click the "windage turret" a bit to the right. 😁
 
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