Hitting the lands/Rogue bullet ?

[bob4]

I have a new rem 700 I'm working loads on. Have shot maybe 100 rds through it by now. Today I had 1 hit the lands and almost stuck. Tried it a few times and I couldn't close the bolt. I shot 2 more rounds through it from the same batch with no problems. When I got home I measured the ogive again on the one that got stuck, 2.860 this is where I set all of them. Just a place to start. To the lands on this gun is 2.910_2.920. I have checked that again also. Definitely marks on the bullet from the lands. Can Sierra be off by that much?
Anyone have a thought on why ?

Sierra GK 130 BT .270
Win brass
coal 3.325

 

[ironworkerwill]

I have seen twice where Sierra made a mistake. Both times there was copper kind of crusted up on one side of the bullet. If some how you loaded one like that....

 

[USSR]

bob4,

I seriously doubt that your bullet loaded to an OAL of 2.860" in a Model 700 was into the lands. I suspect the marks on the bullet are from chambering the round, and the "hangup" on closing the bolt is due to the case shoulder of that particular round not being bumped back enough.

Don

 

[MtnCreek]

Definitely marks on the bullet from the lands.

The marks may be from the chamber or receiver. When the case is held by the extractor on one side, the ejector pushes the bullet to one side and in my 700's, it marks the bullet when un-chambering a loaded cartridge.

Probably not the case, but I would weigh that bullet to make sure it is what you think it is.

 

[gamestalker]

There are a couple of simple methoids to determine if it's the bullet jamming into the lands, or the shoulder needing to be bumped. Either pull the bullet and then try to chamber the brass. Or try seating the bullet deeper and then chamber check it.
I always chamber check my brass prior to moving forward with the loading process. Doing so eliminates any surprises at the range, and more importantly during a hunt, when you absolutely can't afford to have any problems.

GS

 

[RainDodger]

Like gamestalker said... pull the bullet and chamber the case alone. I had one round not want to chamber when I was positive I was loading with a .020" jump from case to lands. It was just weird and I couldn't figure out why.

I finally pulled the bullet. For some strange reason, the case was almost like it had not been sized, although it had. The bullet had been seated firmly in the case and everything had been correct on the load. I ran the case through the sizing die again and it slid into the chamber just fine. I have no explanation why it had been very difficult to chamber.

If all else fails, pull the bullet and check the case in either a Wilson gauge or your rifle.

 

[bob4]

Go figure I finished breaking my kinetic puller tonight. But I will pull the bullet and try to chamber the brass.

 

[bob4]

When I originally pulled the bolt back as it wouldn't chamber correctly I had to use a bit of force to "unstick" the round. That's why I'm thinking bullet in the lands.

The case alone chambered just fine. I measured the bullet by itself to the ogive and it was .655.. at least 10 other new out of the box bullets are measuring .610- .620. But in measuring to the ogive when this was seated in the case was the same as all the others. Also the width at the ogive is the same as the other bullets too .270. So I think I'm still at a loss as to why it hit the lands. I don't doubt this is something I may have done. Just like to know so I don't do it again. Still pretty new to this.
I'll set up the press tomorrow and seat that bullet again and see what happens.

 

[USSR]

bob4,

Chalk it up to gremlins and carry on.

Don

 

[bob4]

bob4,

Chalk it up to gremlins and carry on.

Probably should.

 

[HexHead]

I measured the bullet by itself to the ogive and it was .655.. at least 10 other new out of the box bullets are measuring .610- .620.

I'll set up the press tomorrow and seat that bullet again and see what happens.

Just toss the bullet and move on.