16mm diameter barrel

[Jezzer]

Anybody on here fitted a 16mm diameter barrel to an S510? And if so did you have it fully floating or use an eight shaped front bracket?
Jez.

[Terry Vanpool]

I have installed 16mm LW barrels on two S500's that I use for FT. IMHO the small 10mm tang (the part of the barrel in the receiver) does not provide enough support to float the barrel. I use barrel bands on both and see no reason not to.

[Jezzer]

Thanks for the reply Terry, I have a back up plan to use a barrel band if floating fails although I've now machined the barrel down to 15mm diameter and made it a snug fit in the 15mm recess in the front of the block assembly. All the machining is done now and I've added about 1-1/4" to the overall length of the new barrel. I also made the front where the mod. fits 12mm instead of the original 10mm so today I have to bore out the Q-Tec mod. to fit. Carbon fibre tube, 20mm o/d x 1mm thick, to make the new shroud should be here today.
Jez.

[Blackbaronfish]

Anybody on here fitted a 16mm diameter barrel to an S510? And if so did you have it fully floating or use an eight shaped front bracket?
Jez.

Larger barrels have been used in the past and fully floated. Some have also kept a over sized barrel band just in case of a knock

BBF

[Terry Vanpool]

Jezzer, I have tried floating this barrel and it shot quite well, I was just concerned about all the weight and strain on the barrel tang and action. I do have a HFT500 that does have a floated barrel but it is a 14mm barrel with a 12mm tang and has three screws holding the barrel. Since the 16mm barrel would not fit in the shroud of the S500, I eliminated the shroud and made a muzzle piece to fit the original 20mm barrel band. The POI changed with the barrel band on but the accuracy remained the same. This barrel is a LW .177 poly.

[Jezzer]

Jezzer, I have tried floating this barrel and it shot quite well, I was just concerned about all the weight and strain on the barrel tang and action. I do have a HFT500 that does have a floated barrel but it is a 14mm barrel with a 12mm tang and has three screws holding the barrel. Since the 16mm barrel would not fit in the shroud of the S500, I eliminated the shroud and made a muzzle piece to fit the original 20mm barrel band. The POI changed with the barrel band on but the accuracy remained the same. This barrel is a LW .177 poly.

Thanks for your input Terry, I'm taking it all on board. How long is the barrel in the photo? Mine is finished at 16-3/4" and 15mm diameter and doesn't seem to be putting much strain on the action. Rowan does a 15mm barrel band so I might pick one up at the show this coming weekend.
Jez.

[Terry Vanpool]

This barrel is 21" long. It is about 1" longer than the air tube.

[Jezzer]

Jezzer, I have tried floating this barrel and it shot quite well, I was just concerned about all the weight and strain on the barrel tang and action. I do have a HFT500 that does have a floated barrel but it is a 14mm barrel with a 12mm tang and has three screws holding the barrel. Since the 16mm barrel would not fit in the shroud of the S500, I eliminated the shroud and made a muzzle piece to fit the original 20mm barrel band. The POI changed with the barrel band on but the accuracy remained the same. This barrel is a LW .177 poly.

Thanks for your input Terry, I'm taking it all on board. How long is the barrel in the photo? Mine is finished at 16-3/4" and 15mm diameter and doesn't seem to be putting much strain on the action. Rowan does a 15mm barrel band so I might pick one up at the show this coming weekend.
Jez.

[Jezzer]

Here's a picture of the barreled action.
Jez.