Bolt face pitting/etching - 10/15/21
Hello writers!
I wanted to run this one past the experts and see what you fellows think of it. I just received a 1948 Winchester Model 70 standard rifle in 30-06. It looked very good, bore looks great, etc. But I didn't look at the bolt face.
While I was shooting it today I noticed the primers had a little bit of material that was proud, which had to be from the cup flowing into pits on the bolt face under pressure. Sure enough there are two small pits.
But there are also some imprinted circles on the bolt face. The inner looks like its the outline of a primer pocket, but I don't know what the outer one is. Could that be the case head, because of strong rearward thrust? Has this old timer been fed some hot suppers, and should I be worried about setback, headspace issues etc?
I don't happen to have 30-06 gauges or else I would check. Rifle seems to shoot well though. The cases shown here were either a 130gr Barnes TTSX with 50.5gr IMR3031 or a Speer 130gr JHP with 48.5gr 3031. One of them is rather flattened, but I know my scale is accurate and these are both according to reloading data not heavy loads.
I wanted to run this one past the experts and see what you fellows think of it. I just received a 1948 Winchester Model 70 standard rifle in 30-06. It looked very good, bore looks great, etc. But I didn't look at the bolt face.
While I was shooting it today I noticed the primers had a little bit of material that was proud, which had to be from the cup flowing into pits on the bolt face under pressure. Sure enough there are two small pits.
But there are also some imprinted circles on the bolt face. The inner looks like its the outline of a primer pocket, but I don't know what the outer one is. Could that be the case head, because of strong rearward thrust? Has this old timer been fed some hot suppers, and should I be worried about setback, headspace issues etc?
I don't happen to have 30-06 gauges or else I would check. Rifle seems to shoot well though. The cases shown here were either a 130gr Barnes TTSX with 50.5gr IMR3031 or a Speer 130gr JHP with 48.5gr 3031. One of them is rather flattened, but I know my scale is accurate and these are both according to reloading data not heavy loads.