Benjamin Trail NP accuracy problems
Posted 02 April 2012 - 12:51 PM
I have posted 6 targets here: http://imageevent.co...benjamintrailnp The targets 1-2 are as I generally perceive the rifle: Quite accurate. There are 10 shots in each of those two. Targets 3-4-5 describe the problem. They were shot consecutively in that order. Rifle on a sandbag from 30 feet. First in target 3, I notice that the group is slightly to the left and higher than my previous groups, which have been all tens, so I correct the sight with 1 click to the right after the first 7 shots in the group. The next two shots seem to bring back the hit to center, but are losing height. Shot nr 10 end up as low as a three, with the discharge sounding as if the chamber was empty. As if I forgot to load a pellet, and dry fired the rifle. I start on target 4, clicking two more clicks to the right, and the first shot correspond to that correction as a nine, similarly the next, but dropped and now an eight. Next shot drops even lower to five. Shot 4 hits as low as one, and the fifth shot doesn´t even hit the target, going below my shot catching box. Since I evidently can´t predict where the next shot will hit, I cease this target, and try to examine the rifle breach and bore barrell end which seems fine and clean. The pipe on the compression chamber side however has a tiny amount of residue lubrication/pellet material, which I remove with a dry cotton cloth and inspect with a loupe to ensure the breach is now clean as a whistle on both sides of the breach. Then I shoot target 5, after resetting the sight 3 clicks and lo and behold, the next 10 shots are all tenners, which made me very happy, although surprised that such a small amount of residue on the rear side of the breach could result in the problem. Then the next morning I procede to shoot target 6, whereupon I immediately see after 4 shots that although nicely grouped again the group is slightly off to the left/higher than the ten tenners I shot in target five. Shot five is completely out of the group again, sounding normal, but ending up way down as a four.
I would appreciate to hear from owners of this particular rifle, or owners of similar Nitro Piston rifles of the same manufacture: If they have experienced a similar problem. Thanks a lot for any interest.
Posted 11 December 2012 - 08:29 AM
I have had a lot of air rifles and so often the problems with accuracy come backto the scope and not the gun.
Posted 12 December 2012 - 05:51 PM
Edited by potshot, 12 December 2012 - 06:04 PM.
Posted 15 March 2013 - 04:08 AM
make sure the bore is clean as well. If the barrel is leading up..accuracy suffers.
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