AA S410 .177:

Top choice - Webley Mosquito Express 4.52.

Close second - JSB Exact 4.52, AA Field 4.52, Daystate FT 4.52 (and probably any other 8.4 grain JSB equivalents in 4.52).

Worth considering - Bisley Long Range Gold, Acuples, Crossman Premier and Defiants

AA TX 200HC .177:

Top choice - AA Field 4.52 (and probably any other 8.4 grain JSB equivalents in 4.52)

Close second - Webley Mosquito Express 4.52

HW 97K .177:

As gun is very new to me I have only tested AA Field 4.52 which work very well – interested to see what else is recommended for this rifle.

BTAS FX Cyclone .22 FAC

Top choice: AA Field 5.52, FX Premier 5.52 (and probably any other 16 grain JSB clones in 5.52.)

Not recommended: As the gun is very pellet fussy I would just stick to the above.