Any ideas?

[DesertBoy]

Everything I have loaded in the last 50 shots or so is once fired brass. I have the Redding Comp dies, and have only been neck sizing and bumping the shoulders .002. I haven't full length sized, they chamber fine and we're shouting great. My lands have moved significantly. I was able to put some time in tonight. Originally I was jamming right at 3.773 with comparator. At that length I could see slight land marks 360 degree on the bullet. I am now at 3.794 until lands are leaving slight marks. And I also gave the gun a really good cleaning after reading some suggestions. It wasn't as clean as I thought, looked like someone murdered a Smurf in my garage earlier. A lot more copper than I thought. I am anxious to shoot on on Saturday, clean gun and new seating depth.

 

[.30-06]

I shot 100 rounds before I noticed anything. What's your neck tension at ?

 

[DesertBoy]

I haven't measured

 

[ultimag43]

sounds like a combination of lands moveing and needing a good cleaning

 

[.30-06]

yeah cleaning. I check OAL at about 100 rounds.

 

[.30-06]

I haven't measured

just curious.

 

[DesertBoy]

3 shot group @ 100yd with the 190 Bergers after a solid cleaning and seating depth adjustment. Thanks for the suggestions.

 

[.30-06]

looks like you're in business... betcha you won't forget to clean your barrel any more will ya ?

 

[D2wing]

Many problems are solved by a good cleaning.