Thread: Grouping

I've been pretty unimpressed with my Benjamin Varmint .22 air rifle, as it often seems to need resighting in, even when using nothing but AccuPells.
Preferred my Stoeger A30 but big bro has that now.

Today tried some H&N Terminators and they seem good, but from 10 metres away I can't get my grouping any closer than an 30mm apart. Isn't this a terribly large group at that short range?
Considering my main prey is Rats..although every one I've shot has died pretty quickly, even the chest shots. Seems the max distance I shoot rats at is 10 or less anyway.

No wind today
Cleaned the bore with a snake about 50 shots ago
Scope is a Nikko Stirling Mountmaster 3 x 9x40 AO, all mounts tight, evenly spaced.

This thing recoils a lot, wondering if it's half the problem. I'm using a canvas gun bag full of rice as a rest so not rock hard.
Should I oil the bore at all before I clean it out?

I'm loving the look of the Umarex Octane Elite with the shockproof system, seems to work really well judging by reviews..I'm tempted, starting to think the Benjamin is a Friday afternoon assembly job! Mind you it was bought online from an NZ company, and the seller didn't wrap the box or gun at all, so it arrived from the courier all shook up with the barrel shroud loose. Wish you could name and shame. He was a real cockhead to deal with.

Anyway enough moaning. At 10 metres what size groupings should I reliably expect?
I've tried following pellets:

Accupel, gun seems to like them, about 15g
H&N Barracuda, seem okay but obviously slower, about 18.5g
H&N Terminator, ditto, about 18g
Stoeger X Hunt pointed, seem good, about 15g
Norica wadcutters, couldn't hit the house from 10 metres with those, unknown grains
Gamo Pro Magnum, even worse than the Noricas, terribly inconsistent, I actually threw the tin out! 15.5 grains
Cometa Exact (JSB)? seem good, 18 grains.