80.5 Berger full bore bullets

[rebs]

Will a 24" barrel with 1 in 8 twist shoot these bullets good or do they need a faster twist rate?
What about the 77 SMK's or the Berger 77 gr OTM bullets?

 

[Ned Ludd]

Twist Rate Stability Calculator

Our newly updated Twist Rate Stability Calculator not only tells you what your SG is, but it also lets you know if you are reaching your optimized BC.

bergerbullets.com

 

[dthomas]

They shoot fine in a factory Tikka with an 8 twist

 

[CharlieNC]

8 is a sweet spot for the 80.5

 

[RegionRat]

8 Twist will work all the way down to sea level, but 7.5 is recommended for the 80.5 Fullbore.
Here is the Berger page for your bullet at 1:8, sea level and 2650 fps. (2750 - 2900 doesn't move the needle much.)



Your 77s will be fine.
Before you buy a huge supply of any of these, I would test to see what your rig likes.

 

[LVLAaron]

They'll shoot awesome. They aren't AR mag length, however.

 

[karrarararararar]

Thousands upon thousands have been successfully shot through 20" service rifles with twist rates ranging from 1:7 to 1:8.

 

[Chilly807]

They'll work fine in the barrel length you mentioned and 1 in 8 twist. I'm using that bullet with N140 in a Tikka T3x Varmint with good results.

 

[jelenko]

In my 24" AR the muzzle velocity is close to 2800 fps. At 500 ft above sea level and 59 degree F, Berger's stability calculator shows losing 2% of BC.
At 1000 ft and 70 degree F, it shows no BC loss.

 

[rebs]

Thank you guys for all the help, I appreciate it.
What charge weight are you guys using with Varget or Re 15?
With my charge of 24.5 Varget I am getting average 2700 fps, do I need more powder?

 

[karrarararararar]

24.5 varget is a common load. 24.1 Re15 is another.