I use a Sealey STS100 2 - 10 Nm, easy to use, cheap, chunky with a good grip. I got it calibrated as soon as I got it just to be sure and it was spot on. I have used it on our smallbore and fullbore rifles with no problem.
The only part problem I have is the scale is a bit crude so 6 is easy to see, even going halfway to 7 for 6.5 but any thing finer is a guess, so if you want accuratly 6.1 or so its not ideal. Having been to two top world champion target rifle manufacturers and asked the sport technicians who look after the top teams what torque they set to and been told they do it by hand by feel I think the Sealey is accurate enough for me! I always intended to look out for another one with a better scale but there is not much about in the lower sizes thats a lot better.
Steyr LP2 Short - Steyr LP50e Short - Walther CP2 - Walther LPM1 - Walther LP53 - Feinwerkbau 65 - FAS 604 - Walther LGV - Walther LGR - Walther LG400 Alutec - Walther KK300 Alutec - Swing 7.62 mm in Walther stock. - Keppeler 6 mmBR with Walther grip and wood!