I recently noticed on my newest FX, a .177 DRS Classic, that the liner lock nut rattles around a bit when placed on the liner (before screwing it into the barrel). I didn't recall noticing that on earlier FX rifles with this barrel system. Upon investigating I realized there are no o-rings in the liner lock nut. So I checked the schematic/parts list for the DRS and yep, for the part number indicated there are no o-rings inside.
But I was almost positive that the Maverick I owned a couple of years ago had two o-rings in the liner lock nut. So I check that schematic. Yes, the drawing shows two o-rings in the liner lock nut, but only for .177 and .22. For grins I checked the Impact M3 (yes, for .177 and .22) and M4 (same barrel as the M3), and Panthera/Dynamic/King (No). The interesting thing is that in all cases the part number hasn't changed.
I have had mixed luck with accuracy on FX rifles. Some have been great and others have not been as accurate as I had hoped. I have a couple of Crown Mk II's (in .177 and .22 that I consider to be extremely accurate (as the AGN 30/40 yd Challenge has shown). MY .22 Maverick from 3 years ago was also very accurate. The King I bought in .22 and changed to .25 was good, but not in the same class as the Crowns. I now have a DRS 500mm Classic in .177 that I want to turn into a Hunter Class Field Target shooter. I love the look and feel of the rifle. The problem is I can't get it to shoot like the Crowns. - or even the Maverick!
Obviously, the crowns have the Superlight barrel system with no "liner lock nut". There is nothing holding the end of the liner other than an o-ring in a spacer. When the liner vibrates on a shot (as any barrel/liner will) at the end of the vibration it returns to its original position.
That is different than if you have a liner lock nut screwed up tight to the end of the barrel. It seems to me that it is possible for the vibrating barrel end to not end up in its original position after vibration if there is just enough friction on the front of the barrel that only the largest amplitude vibrations have enough energy to overcome the friction and slip. ********* So, any play in the fit between the liner lock nut and the barrel liner can end up becoming POI shifts between shots or groups of shots! ******
Rick at Bagnal and Kirkwood (UK) found an older liner lock nut with o-rings that I bought. I will try that out to see if it improves my DRS. If not, I may be forced to either come up with a Crown-like liner holding system or go with a different barrel altogether!
Cheers,
Greg
But I was almost positive that the Maverick I owned a couple of years ago had two o-rings in the liner lock nut. So I check that schematic. Yes, the drawing shows two o-rings in the liner lock nut, but only for .177 and .22. For grins I checked the Impact M3 (yes, for .177 and .22) and M4 (same barrel as the M3), and Panthera/Dynamic/King (No). The interesting thing is that in all cases the part number hasn't changed.
I have had mixed luck with accuracy on FX rifles. Some have been great and others have not been as accurate as I had hoped. I have a couple of Crown Mk II's (in .177 and .22 that I consider to be extremely accurate (as the AGN 30/40 yd Challenge has shown). MY .22 Maverick from 3 years ago was also very accurate. The King I bought in .22 and changed to .25 was good, but not in the same class as the Crowns. I now have a DRS 500mm Classic in .177 that I want to turn into a Hunter Class Field Target shooter. I love the look and feel of the rifle. The problem is I can't get it to shoot like the Crowns. - or even the Maverick!
Obviously, the crowns have the Superlight barrel system with no "liner lock nut". There is nothing holding the end of the liner other than an o-ring in a spacer. When the liner vibrates on a shot (as any barrel/liner will) at the end of the vibration it returns to its original position.
That is different than if you have a liner lock nut screwed up tight to the end of the barrel. It seems to me that it is possible for the vibrating barrel end to not end up in its original position after vibration if there is just enough friction on the front of the barrel that only the largest amplitude vibrations have enough energy to overcome the friction and slip. ********* So, any play in the fit between the liner lock nut and the barrel liner can end up becoming POI shifts between shots or groups of shots! ******
Rick at Bagnal and Kirkwood (UK) found an older liner lock nut with o-rings that I bought. I will try that out to see if it improves my DRS. If not, I may be forced to either come up with a Crown-like liner holding system or go with a different barrel altogether!
Cheers,
Greg
