375 CheyTac 1 in 10.5 Twist and Berger 379/407 VLD Solids

[wooferocau]

Anyone used the Berger 379gr and 407gr Match Solids in the Desert Tech HTI with its 1 in 10.5 twist?

Took a punt and purchased a large quantity of these as 375 projectiles are VERY scarce here in Aus.

Have conflicting info/opinion on whether the 1 in 10.5 twist may or may not be fast enough??

Thanks for any input..

 

[Butler12]

Hi,
I would think your twist rate would be way to slow for the Bergers I see they require a 1 in 8 .
Most solids run even better with a faster twist than recommended.
Cutting Edge recommends a even faster than their normal recommended twist if shooting them transonic.

 

[b6graham]

Berger's stability calculator shows you'd be 'okay at best' if you're at 5,000 elevation and 3k fps with the 379gr. the 407s look like a really bad idea

the 379gr might shoot okay even if they lose a little BC

depending how many you bought it might be money well spent to get a new barrel versus waste them on an iffy result

 

[wooferocau]

Berger's stability calculator shows you'd be 'okay at best' if you're at 5,000 elevation and 3k fps with the 379gr. the 407s look like a really bad idea

the 379gr might shoot okay even if they lose a little BC

depending how many you bought it might be money well spent to get a new barrel versus waste them on an iffy result

Yeah about $8k,s worth ..

 

[b6graham]

sounds like it's a few barrels worth of bullets anyways

 

[wooferocau]

Yeah about $8k,s worth ..

Over here in Aus your looking at approx $320 per 50!!!

 

[KineticPerformance]

I shot the 379gn through a 1-8" barrel for Ko2M because you need that level of stability to get a long mono through trans.

 

[wooferocau]

Hmmm NOT sounding promising..

 

[d_train821]

I plan on running the Berger 407s in my CT with a 7.75"-7" gain twist when I get it back from the smith next month. I too am curious how they will perform against the CEB 400 Lazers