Hi guys - I have a fairly OTB Notos I got a couple months back - I've only made a couple easy mods - Opened up the regulator 1/4 turn, polished the trigger mechanism (super smooth pull now) lowered its tension, and then drove in the hammer spring all the way in. Aside from cleaning with the patch worm and adding a picatinny barrel grip & bipod, not much else is modified. I'm dead nuts around 15-20 yds (My favorite perch is out the kitchen window, at about 20-30 degree angle down to a target setup at 15yds & a 4-panel of targets on plywood out right at 40 yds.) -
Anyhow - I've been tweaking cause i have issues with the 40+ yds grouping. Being dead center at 20, I go out to the 40yd, and first shot nearly always strays - but then I'll have the subsequent shots anywhere but bullseye. It's kind of random, too - around 4" apart from each other, some a bit high, some a bit low, and left or right. I can sometimes see the pellet pop out of the barrel and arc down to the target. I'd hoped by opening up the regulator and hammer spring i'd get more of a shot on a rope, but not the case. It did pretty well suck my air supply down too - I still get about 35 shots in from 3,500psi before it starts hitting red though. I'm shooting Diabolo 18gr pellets, which I read in this thread are the pick for accuracy - and don't think it's the pellet I'm chasing.
Is the gain I'd get from a mod drop block & plenum with an upsized canister enough to be considering as the culprit here? I've seen many posts with 50yds being no problem for guys - so hoping maybe it's just the pressure I need to push a little harder? I did clean the barrel a couple times so far, last time just a couple of days ago. If anyone has some thoughts on it, mods maybe even not requiring purchases I'd appreciate that a lot. Thanks a bunch!
Anyhow - I've been tweaking cause i have issues with the 40+ yds grouping. Being dead center at 20, I go out to the 40yd, and first shot nearly always strays - but then I'll have the subsequent shots anywhere but bullseye. It's kind of random, too - around 4" apart from each other, some a bit high, some a bit low, and left or right. I can sometimes see the pellet pop out of the barrel and arc down to the target. I'd hoped by opening up the regulator and hammer spring i'd get more of a shot on a rope, but not the case. It did pretty well suck my air supply down too - I still get about 35 shots in from 3,500psi before it starts hitting red though. I'm shooting Diabolo 18gr pellets, which I read in this thread are the pick for accuracy - and don't think it's the pellet I'm chasing.
Is the gain I'd get from a mod drop block & plenum with an upsized canister enough to be considering as the culprit here? I've seen many posts with 50yds being no problem for guys - so hoping maybe it's just the pressure I need to push a little harder? I did clean the barrel a couple times so far, last time just a couple of days ago. If anyone has some thoughts on it, mods maybe even not requiring purchases I'd appreciate that a lot. Thanks a bunch!