Norma dasher brass trim question

[Kingweb50]

I have a new dasher barrel I just received chambered in lapua dasher. I was hoping the lapua br brass was going to show up during my barrel wait time but it has not. I am thinking of getting some norma brass to play with for now till the lapua brass is available again.

What would I have to trim the norma brass to to be able to work in my lapua chamber?

Will any neck turning be required?

Or any other brass modifications be needed?

 

[dkhunt14]

It depends on chamber length and neck diameter. I would get a Sinclair guage where you trim a case short and put in the case like a bullet. Then you close the bolt and it hits the end of neck in chamber and gets pushed in where the end of chamber is. Now you measure and trim a few thousandths shorter. A Dasher reamer can be any where from 1.540 to 1.570 or more. Whatever neck you have in your reamer Will determine how much you need to neckturn. Matt

 

[geraldgee]

There is always this option as well -
http://forum.accurateshooter.com/th...ready-for-fire-forming.3945037/#post-37151377
All the work is done

Good luck

Gerald

 

[dkhunt14]

There is always this option as well -
http://forum.accurateshooter.com/th...ready-for-fire-forming.3945037/#post-37151377
All the work is done

Good luck

Gerald

He still needs to know his chamber length and neck diameter of gun. A .266 neck turned case is pretty small if he has a .270 chamber. They could be trimmed for a 1.540 chamber and his could be 1.570 or more. Matt

 

[KMart]

I have some of the new Norma 6 dasher brass and measured a few. The case OAL measured between 1.593 and 1.599. These measurements will give you a rough idea about how much you have to trim back.

That said, listen to the above posts to get an exact trim in YOUR chamber.

 

[geraldgee]

He still needs to know his chamber length and neck diameter of gun. A .266 neck turned case is pretty small if he has a .270 chamber. They could be trimmed for a 1.540 chamber and his could be 1.570 or more. Matt

You are correct on all counts. I made the assumption that it was chambered with a standard Dasher reamer as he mentioned trimming the Norma brass. I will add that some guys prefer .004 neck clearance. I dont want that much but there are those who argue for it

Thanks for keeping me straight

Gerald

 

[Kingweb50]

Ok I ordered the sinclair 6mm tight neck chamber length gauge. Thanks for the help on this