6MM BR advice

[stephentri]

Hi looking for some advice for loading for 6mmbr norma I'm looking to shoot 108g Eldm, 

What length should I get rifle throated for i was thinking 2.400 oal touching lands

Reamer will be .272 neck 

What powder I have N150 and N140 

Primers CCI BR4 

Lapua brass 

Thanks and information appreciated 

 

[johnt]

Had a 6mmbr made by dolphin last year , absolute cracker . I tried 107g Sierra , shot well . F1 shooter said try 105g Berger with rs 60 powder . Absolute cracker .

oal 2.440 , 33g rs60 , Berger 105g . 
i shoot mine at 600yds bisley 

[stephentri]

Thanks, would you have the length to ogive ,

[johnt]

I’ll send you it tomorrow mate 👍

[garyw]

load a dummy round with bullet of choice and give it to the gun smith 

[stephentri]

2 hours ago, johnt said:

I’ll send you it tomorrow mate 👍

Thanks 

[Leeman]

15 hours ago, stephentri said:

Thanks, would you have the length to ogive ,

Unless you have the exact same comparator the dimension is meaningless.  Unless there is another way of measuring cartridge base to ogive I am not aware of.

As Garyw says, best way is to give a couple of dummy rounds to the gunsmith and hope he is able to measure and replicate that dimension.   Keep another dummy round to check yourself if he screws up.

[Ronin]

Surely your rifle smith has advised you about this ?

[stephentri]

Hi looking for some advice for loading for 6mmbr norma I'm looking to shoot 108g Eldm, 

What length should I get rifle throated for i was thinking 2.400 oal touching lands, anyone have real life experience shooting these bullets in 6mmbr,

Reamer will be .272 neck no turn neck 

What powder, I have N150 and N140 anyone recommend one over the other?

Primers CCI BR4 ?

Lapua brass 

Thanks any information appreciated