busky42 2 Posted August 11, 2015 Report Share Posted August 11, 2015 so i got my self a bsa hornet lovely pcp single shot riffle very impressed with the power how ever having an issue with it filled it with a hand pump to 200 bar and it was fine while zeroing the gun got it almost in pin point but had to give up due to failing light went home charged the riffle and went out to fine tune it the next day only to find out that that it no longer holds a group even at 10 yards i was getting a random group that was like 2 inches the riffle is on a bipod and we were under a flyover near a river and the bushes gave us a little to no wind so its not the wind the air temp was about 23c i have no clue as to why it would not hold a group i have a nikko stirling mount master with AO scope we have the riffle setup so it cant move so its not movement as i am not holding the rirrle when the shot is fired i will line the riffle up to the same point every time but every the placement is all over the place PLEASE PLEASE SOME HELP ME Quote Link to post
Rez 4,961 Posted August 11, 2015 Report Share Posted August 11, 2015 Is it new? I'm guessing not, but have to ask. Maybe get it on a tank and see what pressure is in it. Not sure the hornet is a reg'd system, unless it's a custom job and secondhand... what do you know about its power curve? Does it have a leak? It can be frustrating I know, but stick with it. Get it topped up to the pressure it should have and do a full shot string over a crono... If it's got a problem you see it occur over the 60- shots it should output. I can't imagine it's complete off accuracy being down to the optic, or anything 'solid' so to speak, it sounds a pressure issue. Quote Link to post
jacka 32 Posted August 11, 2015 Report Share Posted August 11, 2015 hornets wereall regulated and with a swp of 230bar i doubt pressures theproblem.couldbe that the regs failed,have you hadit over a chrono? Quote Link to post
bigmac 97kt 13,836 Posted August 11, 2015 Report Share Posted August 11, 2015 Check the silencer is not loose and check that the pellets are not clipping the silencer on the way out this you can easily hear if you take the silencer off and shake it you will hear the bits of pellets in the silence also tap it on the parm of your hand and see if any bits fall on to your hand also try it with out the silencer and see how it groups it may not be the answer your after but similar has happened to me and it was the silencer in my case atvbmac :thumbs: 2 Quote Link to post
busky42 2 Posted August 11, 2015 Author Report Share Posted August 11, 2015 Check the silencer is not loose and check that the pellets are not clipping the silencer on the way out this you can easily hear if you take the silencer off and shake it you will hear the bits of pellets in the silence also tap it on the parm of your hand and see if any bits fall on to your hand also try it with out the silencer and see how it groups it may not be the answer your after but similar has happened to me and it was the silencer in my case atvbmac :thumbs: wow i never thought of that the silencer did take a very small and light knock as i took it out of the gun bag like i said it was firing true untill that day 1 Quote Link to post
busky42 2 Posted August 11, 2015 Author Report Share Posted August 11, 2015 Any other suggestions will be gratefully received on the off chance its nothing to do with any thing mentioned so far 1 Quote Link to post
busky42 2 Posted August 13, 2015 Author Report Share Posted August 13, 2015 Cheers bigmac 97kt took the silencer of and would you know it small pellet fragments in there i take it out tomorow and try againe with zeroing Quote Link to post
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