Still Shooting
Member
I have just acquired a (new, unfired) Savage Model 11 chambered for 7mm WSM. I took it out to the range for a sight-in and barrel break-in yesterday and today. Yesterday, the 4th round fired bound up the bolt. I brought the rifle home, and last night took the barreled action off of the stock, examined everything, and was able to open the bolt. I found that the case head had flowed slightly into the extractor groove, and the primer was cratered (didn't leak) and somehat flattened.
I was shooting Federal Premium ammo, 140gr. Nosler Ballistic Tip (the same bullets I have bought to reload with in the near future).
My initial thought was that since I was running a lightly oiled patch down the bore after every shot, I might have left some oil in the chamber. So today I was extra careful to make sure the chamber was clean, and changed to patching the bore every 3 rounds. I had a half-dozen more over-pressure rounds in the remaining 16 Federals.
Has anyone else seen this kind of irregular charging/overloading in Federal factory ammo? Is there anything else that might have caused the symptoms?
I was shooting Federal Premium ammo, 140gr. Nosler Ballistic Tip (the same bullets I have bought to reload with in the near future).
My initial thought was that since I was running a lightly oiled patch down the bore after every shot, I might have left some oil in the chamber. So today I was extra careful to make sure the chamber was clean, and changed to patching the bore every 3 rounds. I had a half-dozen more over-pressure rounds in the remaining 16 Federals.
Has anyone else seen this kind of irregular charging/overloading in Federal factory ammo? Is there anything else that might have caused the symptoms?