I've been shooting spring piston airguns for 30+ years and this is my first PCP so I don't have much in the way of first hand experience with what should be acceptable performance or not. It's in .177 and I've tried a variety of pellets and it shoots JSB Monster "Redesigned" 13.43gr the best but it's only holding about an inch for 10 rounds at 50 yards. Frankly I was expecting better than that. Others that I've tried are Barracuda FT 9.57gr, Barracuda Match 10.65gr, Crow Magnum 8.8gr, RWS Basic 7.0gr and H&N Field Target Trophy 8.64gr. All of those are shooting from bad to ridiculously horrible- 3-5" at 50 yards. All of these pellets shoot well in my various other airguns.
Further, the JSB Monster v2s shoot most accurately with the power setting on medium vs. high or low. On low power the accuracy is extremely bad at 2-3" at 20 yards and high power produces groups about 1.5" at 50 yards or about a 50% increase in group size over medium power.
Now I'm well aware of barrel harmonics and handload for all of my centerfire rifles etc. so I figure that the pellets are operating at a particular velocity that the barrel likes. (also note that I've installed a DonnieFL suppressor which doesn't affect accuracy, it's the same with/without it) I'm wondering if it's possible to tune the gun via the hammer spring tension and improve accuracy by jumping up to a higher harmonic node and/or if I just have a sub par gun and need to send it back to the factory. I really don't want to send it back as my experience with BroCock thus far has been terrible with respect to customer service and parts availability.
I tried it out at 90 yards this afternoon and while there was a bit of wind around 10 mph the pellets were all over the place and it would barely keep 10 rounds on an 8"x11" target. The factory barrel/shroud seems quite flexible to me compared to anything else I've experienced barrel-wise. All of my other air rifles have solid steel barrels instead of shrouds/jackets and have basically zero flex. The barrel on the Concept Lite is flexible enough that I can deflect it with my fingers quite easily. Is this normal? It seems pretty suspect to me.
Other info: I've triple checked all screws, optic, mounts, barrel screws etc. for correct torque and used thread locker on everything. Gun is operating at correct pressure and has low ES/SD in the 2-4 FPS range. No complaints there and the shot strings seem to be stable. It's really odd to me that it's so finicky with the pellets and the power settings. In all my previous experience there is usually small variation in accuracy between pellet types with a few standouts but with this rifle the Monster v2s shoot okay to decent (excellent in my book is 1/2" or better at 50 yards) with all the rest being terrible to unbelievably bad.
EDIT: I've put about 1200 rounds through the gun thus far so it's broken in and I've cleaned the barrel/seasoned it multiple times.
As I am completely new to this brand/type of air rifle I'm hoping to get some expert advice or at least some general input regarding PCPs in the hope of improving the performance and accuracy. Other than that I like the rifle overall. The trigger could be better but in general I'm really happy with the rest of the rifle. Thanks in advance for any help anyone might be able to provide. I'm looking forward to the community's input.
Further, the JSB Monster v2s shoot most accurately with the power setting on medium vs. high or low. On low power the accuracy is extremely bad at 2-3" at 20 yards and high power produces groups about 1.5" at 50 yards or about a 50% increase in group size over medium power.
Now I'm well aware of barrel harmonics and handload for all of my centerfire rifles etc. so I figure that the pellets are operating at a particular velocity that the barrel likes. (also note that I've installed a DonnieFL suppressor which doesn't affect accuracy, it's the same with/without it) I'm wondering if it's possible to tune the gun via the hammer spring tension and improve accuracy by jumping up to a higher harmonic node and/or if I just have a sub par gun and need to send it back to the factory. I really don't want to send it back as my experience with BroCock thus far has been terrible with respect to customer service and parts availability.
I tried it out at 90 yards this afternoon and while there was a bit of wind around 10 mph the pellets were all over the place and it would barely keep 10 rounds on an 8"x11" target. The factory barrel/shroud seems quite flexible to me compared to anything else I've experienced barrel-wise. All of my other air rifles have solid steel barrels instead of shrouds/jackets and have basically zero flex. The barrel on the Concept Lite is flexible enough that I can deflect it with my fingers quite easily. Is this normal? It seems pretty suspect to me.
Other info: I've triple checked all screws, optic, mounts, barrel screws etc. for correct torque and used thread locker on everything. Gun is operating at correct pressure and has low ES/SD in the 2-4 FPS range. No complaints there and the shot strings seem to be stable. It's really odd to me that it's so finicky with the pellets and the power settings. In all my previous experience there is usually small variation in accuracy between pellet types with a few standouts but with this rifle the Monster v2s shoot okay to decent (excellent in my book is 1/2" or better at 50 yards) with all the rest being terrible to unbelievably bad.
EDIT: I've put about 1200 rounds through the gun thus far so it's broken in and I've cleaned the barrel/seasoned it multiple times.
As I am completely new to this brand/type of air rifle I'm hoping to get some expert advice or at least some general input regarding PCPs in the hope of improving the performance and accuracy. Other than that I like the rifle overall. The trigger could be better but in general I'm really happy with the rest of the rifle. Thanks in advance for any help anyone might be able to provide. I'm looking forward to the community's input.