Interesting. I will have to check my 2260. I thought it was odd that the only pellet the 2260 will shoot is JSB 18.1 and I mean others are thrown all around. It doesn't even like 14.5grn crosman premiers in dome or hollowpoint. H&N Barracuda 21grn and Beeman Kodiak 21grns are thrown like curveballs at 15 yards. I will check my barrel later. Thanks for the heads up.EDIT- my barrel looks fine, still weird to me that it won't shoot crossman, H&N, Beeman and RWS pellets. JSB's only for this one. May have to order an 18" from Baker airguns, I like the look better with the TKO on there.
Quote from: bmoney on June 06, 2016, 04:21:40 PMInteresting. I will have to check my 2260. I thought it was odd that the only pellet the 2260 will shoot is JSB 18.1 and I mean others are thrown all around. It doesn't even like 14.5grn crosman premiers in dome or hollowpoint. H&N Barracuda 21grn and Beeman Kodiak 21grns are thrown like curveballs at 15 yards. I will check my barrel later. Thanks for the heads up.EDIT- my barrel looks fine, still weird to me that it won't shoot crossman, H&N, Beeman and RWS pellets. JSB's only for this one. May have to order an 18" from Baker airguns, I like the look better with the TKO on there.you also need to check the leade (for a smooth transition to rifling rather than a sharp edge)...also about half my barrels had a burr at the transfer port that needed knocked down...Jason has a thread on how he does his barrels but I lost my bookmarks...
Matt, for what it's worth, I have one of the barrels with a line running down the bore and it shoots great It was a big surprise. I did recrown it and polished the leade but I did not polish the bore. I thought I would need to but it was printing 3/8" groups at 25 yards and that exceeded my expectations for a pumper so I never took it apart for that step.
My particular barrel shoots the Air Arms 10.3gr best, followed closely by both JSB- and AA-branded 8.4gr. But let me qualify that by saying when it comes to finding the very best shooting pellets, the difference between pretty good and excellent seems to come down to the particular batch.Also, the RWS Meisters group about 1/2" at 25 yards which makes a very effective house sparrow wrecking ball.All this is at around 10fpe on a 24" barrel. I know it defies logic...a barrel that long and slender ought to be a harmonic vibration nightmare but the fact it shoots various pellets (i.e. different weights and velocities) well tells me it is pretty well behaved. FWIW, I did firm up the barrel band by shimming where it attaches to the end of the pump tube and there is a grub screw on each side coming up at an angle to bite into the barrel. Just carefully tapped the plastic and took care not to over torque them. POI has been rock solid from day to day, month to month.