The 6.5/300WBY is an overbore cartridge and yes you could have a carbon ring in only 120 rounds.Ok I talked to Weatherby c.s. and they wanted lot#s of ammo which I gave them and pictures of the case heads. I don't see how it would be the factory ammo also have flattened primer and black around it on a factory swift Sirocco 130gr shell case 3 different boxes and bullets. Would I get a carbon ring with only 120 or so rounds down the barrel? I don't have a bore scope to see is there any other way to check for a carbon ring?They also said if I need to send them the gun it would take 60-90 days so that gun would be out for this hunting season thanks for your help
Right on. I've always had squeaky clean barrels run higher pressures until I get 3-5 rounds down them.Stop cleaning so much. Shoot until accuracy starts to degrade then clean and refoul as necessary
Make sure your chamber is absolutely dry and has no residual cleaning product in it
Never had one in many thousands of rounds.Andrew massi how do you keep from getting a carbon ring? Thanks for the info. I have been struggling
The one box of factory was the 130 sirrocos. They shot really good! After that it’s been 143 eldx and 140 eldm’s. The 140’s were intermittently flying apart somewhere after 450 yards which was actually kinda fun. Hits on a bowling pin at 540 were spectacular if the come apart was timed perfectly lol. Currently have a load with 156’s that’s inside an inch @200 but haven’t had time to take to distance. Probably wait till weather cools to play more.Thats a good idea. I was trying to make sure I didn't get a carbon ring. What ammo bullets are you shooting?
Is the bolt hard to open?I have a 6.5 300 wby mark 5 I have put about 120 rounds down the barrel. I have cleaned it diligently after every 20 or 30 shots. Now out of the last 10 or 15 shots I have been getting flattened primers and slight ejector marks on case heads with 2 different factory loaded ammo 140vld and 127gr lrx bullets and chronograph speeds around 3640 or so which is about 100fps faster than advertised. What is going on? I don't know if I should continue to shoot it until I find some answers. Any suggestions would be greatly appreciated thanks