Balistix RBT Target (BC & Twist Rate)
View the Notes below the table.
Balistix RBT Target BC & Twist Rate
| Calibre | Bullet Weight | Bullet Type | G1 BC | G7 BC | Barrel Twist Rate (Typical) | Stability Factor (SG) Sea Level @20DegC | Stability Factor (SG) Highveld (1400m) @ 20DegC |
|---|---|---|---|---|---|---|---|
| .243" | 75gr | RBT Target | 0.34 | 0.17 | 10 | 1.22 | 1.41 |
| .243" | 85gr | RBT Target | 0.41 | 0.2 | 8 | 1.5 | 1.77 |
| .264" | 115gr | RBT Target | 0.49 | 0.24 | 9 | 1.64 | 1.93 |
| .264" | 125gr | RBT Target | 0.52 | 0.26 | 8 | 1.44 | 1.7 |
| .277" | 130gr | RBT Target | 0.48 | 0.24 | 10 | 1.57 | 1.85 |
| .284" | 140gr | RBT Target | 0.5 | 0.25 | 9 | 1.39 | 1.64 |
| .308" | 155gr | RBT Target | 0.44 | 0.22 | 12 | 1.34 | 1.58 |
| .308" | 165gr | RBT Target | 0.47 | 0.23 | 11 | 1.49 | 1.76 |
| .308" | 175gr | RBT Target | 0.5 | 0.25 | 10 | 1.65 | 1.95 |
| .338" | 250gr | RBT Target | 0.64 | 0.32 | 10 | 1.48 | 1.75 |
| .375" | 250gr | RBT Target (Solid) | 0.44 | 0.22 | 12 | 1.83 | 2.16 |
Notes
Version: 2019-07-10
Note: Bullet geometry obtainable from Balistix Quick Load bullet file.
Balistix “Target” Bullet:
Target bullets are solid bullets without any expansion capability. These bullets are NOT intended for hunting EXCEPT for the 9.3mm and .375 bullets that are considered “SOLID” bullets and may be used for dangerous game hunting. Target bullets are also used as a more cost effective alternative for developing loads to be used on the Balistix HunTac & Ultra Hunt bullets.
G1 BC:
Mathematically calculated at Mach 2.5. G1 BC is derived from a flat base design model and should not be used for long range ballistic trajectory calculations. G1 BC is however sufficient for short range (up to 300m) shooting.
G7 BC:
Mathematically calculated at Mach 2.5. G7 BC should preferably be used for a boat tail bullet design therefore more applicable to Balistix bullets.
Actual BC:
Please note that actual BC is drastically influenced by muzzle velocity and atmospheric conditions. Please follow the procedure on our website in order to determine the exact BC for your rifle. (www.balistixbullets.com)
RBT:
A Rebated Boat Tail bullet combines flat base bullet accuracy properties with boat tail BC enhancements. International studies have shown that a Rebated Boat Tail design can yield an increase in accuracy of up to 15% compared to conventional boat tail designs.
SG (Gyroscopic Stability Factor):
SG < 1.0 = unstable and should not be used.
SG 1.0 to 1,5 = marginally stable*. This is a “grey zone” and tests with your rifle and bullet combination will reveal a stability problem or not.
SG > 1,5 = perfectly stabilised.
* Please note that marginally stable does not mean the bullet will not shoot well. If your bullet holes are perfectly round/symmetrical on a paper target it implies that the bullet is stabilised in your rifle. If you note any form of “key holing” on your target, at any distance, then your rifle and or environmental shooting conditions are not suitable for our bullet.
Balistix Information File Version:
Information and product may change without notice. Please check web page regularly for latest revision. Revision date is underneath information table.
