Airwolf POI shift with temperature
- Thread starter Skip-in-WV
- Start date
there has much written about this subject and it seems it can happen
they go out and shoot in the morning and leave the rifle outside where the sun can shine on it or at least warm up and then come out and your POI has changed
the owner did test the process over again and it did the same thing, I believe the subject was on the Warrior forum
they go out and shoot in the morning and leave the rifle outside where the sun can shine on it or at least warm up and then come out and your POI has changed
the owner did test the process over again and it did the same thing, I believe the subject was on the Warrior forum
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None here, tho that said by a few about SCOPE. In many guns that have temp shift it does come down to the optics. Mind you not necessarily the scope itself but the mounting of it and how this can / may create motion with temperature shifts.
Some guns that have stacked receiver / air tubes don't have a lot of metal bridging between the FORWARD area of receiver where barrel attaches and the REAR area.
What happens is the receiver itself is shape shifting and having a scope ring on each section any motion between these point puts a strain on the scope tube and there respective alignment to one another slightly shifts.
PCP's for instance with MONO BLOCK receivers such as many FX, RAW etc the shear mass of the receiver is such that there is no shift front to rear and therefore no poa / poi shift.
Understand that the scope BRIDGES the front to the rear of a receiver and adds MUCH rigidity doing so. If the receiver shrinks or grows in the slightest amount and scope does not this has the barrel ever so slightly moving up ( If receiver grow as it warms up ( creating a higher POI ) .... and if receiver shrinks ever so slightly when cold the barrel is ( pulled down giving a lower POA )
case for one piece scope mounts can be made here !! as would be a good argument for mono block construction. For what ever thats worth ... LOL
Scott S
Some guns that have stacked receiver / air tubes don't have a lot of metal bridging between the FORWARD area of receiver where barrel attaches and the REAR area.
What happens is the receiver itself is shape shifting and having a scope ring on each section any motion between these point puts a strain on the scope tube and there respective alignment to one another slightly shifts.
PCP's for instance with MONO BLOCK receivers such as many FX, RAW etc the shear mass of the receiver is such that there is no shift front to rear and therefore no poa / poi shift.
Understand that the scope BRIDGES the front to the rear of a receiver and adds MUCH rigidity doing so. If the receiver shrinks or grows in the slightest amount and scope does not this has the barrel ever so slightly moving up ( If receiver grow as it warms up ( creating a higher POI ) .... and if receiver shrinks ever so slightly when cold the barrel is ( pulled down giving a lower POA )
case for one piece scope mounts can be made here !! as would be a good argument for mono block construction. For what ever thats worth ... LOL
Scott S
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