CRAP AA S400 Shot Count

[Vic Thompson]

It's not a direct comparison, but it might help a little : my BT Reg'd 0.177 cal AA400 Carbine runnng at 11.4ftlbs with H+N Field and Target Trophy Pellets gave me 65 good shots before falling off the reg.

With one of my other unregulated AA400s, I found that slight downward adjustment of the power setting gives a reasonable increase in shot count, from memory, maybe twenty further good shots for a ME reduced by 0.25ftlbs or so.

Possibly jugging around a few of the settings might help a little, and checking for leaks in the Transfer Port and Barrel Seal area might show up something causing detrimental performance.

HTH, Vic Thompson.

[KJMCMENA]

Cheers Vic. Will check for leaks first as i'm not confident about messing with power settings (I think these are anti tamper!!) I really like the pellets i'm using, Daystate Rangemaster Soverign with really tight groups at 30yds. Worst case scenario for HFT shoots...I did another test today and filled to 190 - 195 Bar and got an extra 10 good shots before it started to dip significantly. I did notice that with so much pressure from the fill, the first 5 shots were normal (approx 765 fps) then it started to climb to 775 fps and stayed relatively consistent for from shot 7 to 37. I guess the valve is under a little too much pressure in the beginning and takes time to relax after a few shots. At least I am getting about 40 decent shots at 190 - 195 bar fill and if I discover a leak then this will be the source of the original disappointment.

One final question....is it worth regulating?

[Vic Thompson]

"One final question....is it worth regulating ?"

Not in my opinion based on a sample of one/two, namely my AA400 Classic BT tuned. This gave me around 120 shots or so at around 10.5 ftlbs with around +/- 1.5 % MV variation (from memory). As far as I can see someone who is prepared to invest time setting up an AA400 to run at 10.5 ftlbs or so (via adjusting Hammer Spring Set Up/Venturi Set Up etc) can save themselves a lot of money and achieve results all but as good as those obtained by fitting a regulator (and a colleagues BT AA400 also performed ditto),

JMHO, Vic T