6x74????

[cmillard]

at the St. Louis 600 yard national, steven dlack shot a 6x74 in the heavy gun class and was shooting a berger 105 in lapua brass. what is this cartridge based off of?

 

[Kenny474]

It's based off a typo of the 6-6.5X47 Lapua.

The only cartridge I know of that is 74mm long is the .378 WBY mag, and I think it would be a bit excessive for a 6mm widlcat, though some of the Lazzeroni brass may be 74mm as well. But as far as I know, the longest brass that Lapua makes is .338 Lapua, which is only 70mm.

I am pretty sure it's a typo and he was shooting a 6X47 Lapua.

 

[15Tango]

Maybe it's a 50 BMG cut back to 74MM, improved and necked down to 6MM? Oh yeah.

That's what I'm going with.

Wayne

 

[RDavies]

No, it was not the 50 BMG. It was actualy an improved version of the 20mm Lahti using Vihta Vouri N570 . The bullet couldnt stay together, but the plasma jet coming out of the barrel cut the holes in the target 600yds away.

 

[M14AMU]

For you 'speed freaks':

I've necked down my thermos jug to a phonograph needle!!

9450 fps!!