300 Norma Mag

[Schw15]

Going back to sizing dies, my LE Wilson sizer will not allow me to bump the shoulder at all. I use Redding comp shellholders and screw the die in to make contact with the shellholder well before top of stroke to avoid camover. Even with the standard shellholder (+0) I’m not getting any bump, and cannot size brass fired in a different chamber to fit mine at all. I’m going to call them Monday, but what other issues have you guys found?

In my 300 norma improved i had to take a shell holder and grind it off about 8 thousand. I just took a diamond stone to shave off what I needed

 

[Charlie Papa]

In my 300 norma improved i had to take a shell holder and grind it off about 8 thousand. I just took a diamond stone to shave off what I needed

I wonder if putting the die body in a 6-jaw chuck to take about 10 thousandths off the bottom would be accurate enough not to affect runout. And I wonder how hard that joker is…

 

[Schw15]

I wonder if putting the die body in a 6-jaw chuck to take about 10 thousandths off the bottom would be accurate enough not to affect runout. And I wonder how hard that joker is…

I always did the shell holder if you mess up its cheaper lol

 

[Rhed]

I think Lapua 300 Norma cases is really tough imo. I have to run the ram twice to get the bump on my bullet central sizing die. I found that was working for me.

 

[4O6shootist]

Going back to sizing dies, my LE Wilson sizer will not allow me to bump the shoulder at all. I use Redding comp shellholders and screw the die in to make contact with the shellholder well before top of stroke to avoid camover. Even with the standard shellholder (+0) I’m not getting any bump, and cannot size brass fired in a different chamber to fit mine at all. I’m going to call them Monday, but what other issues have you guys found?

What's the difference on fired brass from one chamber to the new one? Sounds like a pretty big gap. Use a belt sander to take down top surface of shell holder. Or machined own the face of your die.

You're not sizing on a zero press by chance are you?

 

[Charlie Papa]

What's the difference on fired brass from one chamber to the new one? Sounds like a pretty big gap. Use a belt sander to take down top surface of shell holder. Or machined own the face of your die.

You're not sizing on a zero press by chance are you?

No, I'm using a Redding Ultra mag press. I bought some once-fired brass, and it's a full 13 thousandths longer than new, and 5 thousandths longer than a new case fired in mine with a very light load. I can't get any bump on the brass I bought, and it won't chamber in my rifle. I may mess with a shellholder, but I'm definitely calling LE Wilson Monday, too.