6BR Ladder Test?

[bored184]

I am just putting the finishing touches on my 6mmBr midrange build and I will hope to shoot a ladder test the beginning of next week. What should be my minimum and maximum powder range if I plan on using Varget and Sierra 107gr matchkings?

 

[Rope2horns]

I'd start at 29gr then go up until I seen signs of pressure then stop.

http://www.accurateshooter.com/cartridge-guides/6mmbr/

 

[Albany Mountain]

30 Grains minimum, 30 grains maximum. Don't forget the Lapua brass.

 

[Drop Port]

I'd start at 29gr then go up until I seen signs of pressure then stop.

http://www.accurateshooter.com/cartridge-guides/6mmbr/

+1
Action, FB, chamber and barrel will determine along with Lot# of powder but mid 28's to 29 is usually a good starting point. Never hurts to start a little low to see what's going on.

 

[matorre]

That's good shooting there, Albany Mountain!
M.

 

[bored184]

Thanks for all the input!

What are you COAL measurements and ogive measurements for say 107SMK and 105 Bergers?

 

[JFrank]

Thanks for all the input!

What are you COAL measurements and ogive measurements for say 107SMK and 105 Bergers?

I have a .093 freebore my CBTO Datum with 107smk is 1.796
I don't measure OAL -YRMV