03-24-2020, 05:10 AM
A1Vixen Wrote:Thx for your answer.
What Gas bore diameter do you have?
Here in Europe it doesn't matter if I go with a 6AR, Turbo or 40imp.
Need to import everything and every barrel is custom.
That's why I choose the 40imp.
And I will try to get the best velocity without killing the brasses and use the 105gr RDF.
If the Lapua brasses in 6AR have 37gr water capacity. How much has the Turbo40?
I found datas for the 6mm Fat Rat and there was written 36-37gr water capacity.
Now I'm a bit confused...
Every additional water capacity is good, so we will see.
I had really good luck with the 110 smk in a fat rat, which I think is very close to the turbo 40. Dunno if you can get sierras over there but worth a try if you can. If its a custom barrel, go 1-7 in case you want to go that way.

