I'd think things like the 9.5 ish Barracuda light types would be top end heavy for a typical springer such as you describe.

I'd also imagine bog standard 8.3 - 8.6 to be the optimum in terms of accuracy and energy most likely in your rifle

RWS, H&N, JSB, usual suspects, maybe a Bisley branded H&N of some type might be a good fit too .