[Doctor Jest]

Honestly, as soon as you mention "stock" then remove any expectations of stellar accuracy - The SSR90 is by no means terrible, but achieving the sort of accuracy you're hoping for is going to require a lot of tuning. With that said, 60cm isn't dreadful......and it does give you a lot of scope for improvement. 1.65j is firmly within the middle of DMR territory for most sites near me (and indeed, the majority of the UK) and in my experience, I would be hopeful of the sort of performance that would see every BB hitting a sheet of A4 paper at 60m at least.

 

[Doctor Jest]

It seems things fall off quite rapidly after that unless youre shooting heavies. Betweem 60y and 70y the group widens some 3+ feet if I had to guess (but havent shot enough at the range yet to say fo sure)

It's that delicate balance of power, weight, environment......but 3 feet dispersion over 10 yards is perhaps a bit cynical ;-) For any given distance my definition of "effective" is "able to hit a man-sized torso 10/10 times" which equates to around 18" x 30", and a lot of the time I have found that the BB simply drops out of the air before I reach the point where I'm missing the target - unless the wind is being particularly contrary.


Most of the time a decent inner barrel and bucking is all that's required to leverage the potential of a given RIF so generally, those are the things I upgrade first and then only after some games will I make further alterations.Caveat: If I had the luxury of higher limits, I might not be so quick to take guns out of the workshop but over here, it doesn't take much to put the average gun over the field limit