Reply To: POI Shift, My Old Nemesis!!!

Forums PCP Airguns POI Shift, My Old Nemesis!!! Reply To: POI Shift, My Old Nemesis!!!

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elh0102
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bandg

elh0102

Trying to figure out POI changes with air rifles is a fool's errand. Check your zero before hunting if possible, otherwise, try to accept it as part of the sport. In my experience, some  barrels need seasoning after cleaning to settle down, others change throughout the cycle to the next cleaning.  It's probably the only aspect of precision AR shooting that I find as frustrating as rimfire. Rimfires will change POI with different ammo, even of the same velocity, or, different lots of the same ammo. But air rifles seem to do it for no reason. 

I don't agree with the generality of this statement.  It seems widely true but not always the case.  It is one reason the Walther LGU I own is my go to gun for a first shot.  It does not change POI noticeably from day to day.  I have others that certainly do change POI noticeably and a few recent acquisitions that I don't know about yet (the Weihrauch HW44 I got recently has so far not shown much change from session to session but I don't have enough time with it to state that it "doesn't"). 

Yes, I have a couple that are relatively stable day-to-day as well, a Steyr Challenge Hunting (strange label for a single shot with no safety) and, so far, my Red Wolf. The consistency of the Steyr does not surprise me, offering typical Austrian simplicity, without a bunch of stuff complicating the barrel attachment system, just a bare, floating barrel. I suppose, given the light and relatively slow projectile, we should expect POI variations with significant weather changes. In other cases, I'm sure there is a reason for every POI change, but I sometimes can't find it. As a class, I have found air rifles to be a finicky bunch, as compared to their metallic cartridge cousins, but there are exceptions. If I remove the suppressor from my Brocock Bantam for transport, or to put on another rifle, when I attach it back on the Bantam I can expect a POI change, sometimes substantial. The Red Wolf, which uses a similar shroud arrangement remains on zero after such shifting around. Of course, none of this matters much for shooting targets or bouncing around cans or bottle caps, since it takes only a few minutes to check the zero. But, it can be problematic in a hunting scenario.