AT44-10 .177 help.

[Jaximus]

So, my AT44 has been acting a little erratic since I first got it a week ago. Today I got it over a chrony and here are my results:

JSB Diabolo Monster 13.43gr .177

200 bar fill.

1- 909.6         6- 924.9         11- 932.1        16- 963.4
2- 925.3         7- 931.1         12- 939.9        17- 956.9
3- 918.1         8- 928.9         13- 949.1        18- 965.5
4- 916.2         9- 932.2         14- 946.3        19- 962.5
5- 918.4       10- 942.8         15- 955.4        20- 970.7

160 bar on the gauge after 20 shots.

21- 967.2       26- 962.7
22- 969.4       27- 957.5
23- 968.2       28- 952.9
24- 964.5       29- 949.7
25- 961.6       30- 947.2

130 bar on the gauge after the 30th shot, with every shot in the next magazine dropping until 882.4FPS on the 40th shot at 100 bar.

Without the chrony I noticed that the rifle wasn't really accurate until around 100 bar. So, how do I get my shots down to a more reasonable velocity with this gun? Just under 900 FPS it shoots really well, but at 200 bar the gun is all over the place. The manual isn't exactly a wealth of information and I'm using just about the heaviest pellets I can find. I know at least a couple of you guys have AT44's that perform really well. Any pointers from the pros?

Thanks for the help, guys.

Oh, I also wanted to add that I haven't done anything to the gun. It's stock with about 350 pellets through it.

[Bwalton]

That is shooting way too hot for a .177 I would go regulator which would be the fastest and easiest way, next to that time and skill would be involved.
Regulator= http://www.air-superiorityproducts.com/home22.html
the other way....
http://airgunhome.com/agforum/viewtopic.php?t=8657

[Jaximus]

Looks like regulator it is. Thanks, Baxter. I was hoping you would chime in here.

[Bwalton]

Your welcome just a little busy but I will get to it