Hatsan AT44S-10 Long in .25 cal

[archellas]

Have referred to this post many many times ....
Still following ...

[Jzizzle]

Hades on backorder.

Testing today with various slugs at 22 yards.
28gr and 30gr that appear to be replicas or similar to fx hybrid. 
28gr with hollow base
30gr dish base

initially dialed strings over the chrony.  I was trying to achieve 950+ fps but that wasnt happening.  910 was max but shot count was only 12 with 3% spread. To get 2 mags ave velocity is 875fps with 3% spread.  At these speeds the only one grouping well is the 28gr hollow base slug.  Whats interesting is I will get a few hole in hole and then a flier.  I think this may be due to how the pellet in loaded in magazine and what the probe does while loading into breech.  They are a tad too long for the magazine.

I will order these hollow base slugs in 25gr to have a better fit in magazine and to sling at higher fps.

to be continued...

[Jzizzle]

Some more testing today.  Concluded that the magazine fitment is not the issue.

Today is 17mph sustained winds with over 25mph gusts.  Accuracy testing at 22 yards off a bipod and cheap walmart table.

5 shot groups

30gr Dish Slugs (.250)  Avg 829 fps  1.02"
28gr Hybrid Slugs (.249) Avg 863 fps  .85"
30 gr Hybrid Slugs (.249) Avg 834 fps 1.09"
28 gr Deep Hollow Base (.250)  Avg 873  1.57"

All not acceptable at 22 yards!

I just got in Varmint knockers 32.8gr Flat Base Slugs.
(.250) Avg 855 fps  .39"
 This is good news and will test further out on less windy day.  Best slug out of the Bullboss so far.

Also on the way is the Hades pellets, AVS slugs, NSA slugs and lighter weight Deep hollow base slugs.

More to come...

[Jzizzle]

I created a new thread if interested to follow.


https://www.gatewaytoairguns.org/GTA/index.php?topic=167799.new#new

[rsterne]

NT