Taipan Vet 2 and temperature related POI shift

[rangur1]

Now my love for this platform, both 1 and 2 are well documented. However, it is , to me, imperative that real observational feedback is given. Now I recollect that TAIPAN, in their video, stipulated that their new "free floating barrel" design would eliminate POI shifts resulting from temperature changes. This was claimed because the temperature change would affect the brackets influence on the barrel as it shrunk or expanded. Which is true! I've observed this many times, usually with a change of about 6-8 degrees F. or about 4-5 degrees C. Well, monday I shot both the vet 1 and 2 in 83 Degrees F. They were zeroed perfectly. This was at 10 yards. - my yards tiny. picked them up today , which was 68 degrees F and the vet 1 was off by 3/8" - perfectly normal for those changes in temp. However, the Vet 2 was off by over an inch! at 10 yards. That would be a 5" POI shift at 50 yards. So, their claim of a free floating barrel not being suceptable to temperature POI shift is false. I could be wrong about them claiming that in their video, but I'm pretty darn sure. Does this sour me on the gun? Hell no! I would also always confirm zero just prior to competing or shooting live targets as is standard practice. But BS needs to be exposed if it's discovered. Feel free to watch the video and correct me if I'm wrong.

 

[Franklink]

When I saw the promotional material for the Vet 2 advertising that the new barrel fixing eliminates poi shifts I chuckled.

I've got three original Vets. None of them have ever had poi shifts.

And that's COMPETING with them in regular field target and high power field target. In LOTS of matches, and usually being in the top 5-10% of scores for that match.

The .20 Short and the .22 Long have had the same scope zero for probably two years. The third one has been somewhat the test bed, lots of barrels and scopes so it gets swapped often enough to not be able to make any poi maintaining arguments.

Edit: Thought about it a minute and decided to qualify some more. None of mine have had significant enough scope shift to cause misses on field targets. The extremes there being a 3/8' kill zone at 10 yards or a 3inch kill zone at 100 yards, with everything imaginable in between. Ie. any scope shift has been insignificant to the game of field target or killing pests, at any and all distances a pellet flinger has any business shooting.

 

[cavedweller]

Now my love for this platform, both 1 and 2 are well documented. However, it is , to me, imperative that real observational feedback is given. Now I recollect that TAIPAN, in their video, stipulated that their new "free floating barrel" design would eliminate POI shifts resulting from temperature changes. This was claimed because the temperature change would affect the brackets influence on the barrel as it shrunk or expanded. Which is true! I've observed this many times, usually with a change of about 6-8 degrees F. or about 4-5 degrees C. Well, monday I shot both the vet 1 and 2 in 83 Degrees F. They were zeroed perfectly. This was at 10 yards. - my yards tiny. picked them up today , which was 68 degrees F and the vet 1 was off by 3/8" - perfectly normal for those changes in temp. However, the Vet 2 was off by over an inch! at 10 yards. That would be a 5" POI shift at 50 yards. So, their claim of a free floating barrel not being suceptable to temperature POI shift is false. I could be wrong about them claiming that in their video, but I'm pretty darn sure. Does this sour me on the gun? Hell no! I would also always confirm zero just prior to competing or shooting live targets as is standard practice. But BS needs to be exposed if it's discovered. Feel free to watch the video and correct me if I'm wrong.

how can you be sure it is the gun and not your scope creating the poi shift... scopes changing with thermal shift as well.

 

[nervoustrig]

However, the Vet 2 was off by over an inch! at 10 yards. That would be a 5" POI shift at 50 yards.

I won’t go so far as to claim there is no temperature-induced POI shift, but it explains maybe 1/8” of the full inch. I mean, I’ve shot all manner of PCPs with barrel bands and free-floated barrels in wider temperature swings and never seen anything remotely close to an inch at 10 yards or 5” at 50 yards.

EXCEPT...except when something else was wrong. Like a hammer lubricated with a wet lubricant that became highly viscous in cold weather. So I think the behavior you’re seeing is a plea for further investigation.