Capt RB
Well-Known Member
- Joined
- Dec 1, 2014
- Messages
- 1,994
Do you mean the 180 accubond or the 190 ABLRI just ran Bergers stability calculator for Nosler's Accubond Long Range 180-gr. 30 caliber bullet leaving at 3100 fps from a 1:12 twist in 30 and 90 degree temps at 5000 feet elevation. Results were in the low range 1.51 and 1.70 stating good stability.
There is a significant difference
The 190 ablr at (1.460")5000' and 30 degree is marginally stable at 1.36 at sea level and 59 degrees it's 1.2.
The 180grn is a different profile and not nearly as efficient.
I shot the 190 serria in both the military and competition for many years. I loved that bullet and had many great rounds with it but it is not near as good as what we have available off the shelf today. We have a palma 155.5 bullet that is damm near as slippery that would be great in a 12 or 13 twist.