True-Flite NZ · Interactive reference
Your calibre.
Your next barrel.
Find the calibre and twist options in the True-Flite range without digging through a stack of specifications. Select a calibre below, compare the listed options and send your preferred configuration to our Gisborne workshop.
17 catalogue entries · Select a calibre to update the panel.
Choose a catalogue entry.
Published range / Centrefire
.20
.204 catalogue designation
Listed twist options
3 published options
This panel reproduces True-Flite’s published twist list for this calibre. It does not assess bullet compatibility or predict performance.
Published range / Rimfire
.22 Rimfire
Rimfire catalogue entry
Listed twist options
2 published options
This panel reproduces True-Flite’s published twist list for this calibre. It does not assess bullet compatibility or predict performance.
Published range / Centrefire
.224
Centrefire catalogue entry
Listed twist options
5 published options
This panel reproduces True-Flite’s published twist list for this calibre. It does not assess bullet compatibility or predict performance.
Published range / Centrefire
6 mm
.243 catalogue designation
Listed twist options
6 published options
This panel reproduces True-Flite’s published twist list for this calibre. It does not assess bullet compatibility or predict performance.
Published range / Centrefire
.257
Centrefire catalogue entry
Listed twist options
4 published options
This panel reproduces True-Flite’s published twist list for this calibre. It does not assess bullet compatibility or predict performance.
Published range / Centrefire
6.5 mm
.264 catalogue designation
Listed twist options
5 published options
This panel reproduces True-Flite’s published twist list for this calibre. It does not assess bullet compatibility or predict performance.
Published range / Centrefire
.277
Centrefire catalogue entry
Listed twist options
3 published options
This panel reproduces True-Flite’s published twist list for this calibre. It does not assess bullet compatibility or predict performance.
Published range / Centrefire
7 mm
.284 catalogue designation
Listed twist options
4 published options
This panel reproduces True-Flite’s published twist list for this calibre. It does not assess bullet compatibility or predict performance.
Published range / Centrefire
.30
Centrefire catalogue entry
Listed twist options
9 published options
This panel reproduces True-Flite’s published twist list for this calibre. It does not assess bullet compatibility or predict performance.
Published range / Centrefire
.303
Centrefire catalogue entry
Listed twist options
1 published option
This panel reproduces True-Flite’s published twist list for this calibre. It does not assess bullet compatibility or predict performance.
Published range / Centrefire
.338
Centrefire catalogue entry
Listed twist options
4 published options
This panel reproduces True-Flite’s published twist list for this calibre. It does not assess bullet compatibility or predict performance.
Published range / Centrefire
9 mm
.355 catalogue designation
Listed twist options
1 published option
This panel reproduces True-Flite’s published twist list for this calibre. It does not assess bullet compatibility or predict performance.
Published range / Centrefire
.358
Centrefire catalogue entry
Listed twist options
1 published option
This panel reproduces True-Flite’s published twist list for this calibre. It does not assess bullet compatibility or predict performance.
Published range / Centrefire
.375
Centrefire catalogue entry
Listed twist options
2 published options
This panel reproduces True-Flite’s published twist list for this calibre. It does not assess bullet compatibility or predict performance.
Published range / Centrefire
.45
Centrefire catalogue entry
Listed twist options
1 published option
This panel reproduces True-Flite’s published twist list for this calibre. It does not assess bullet compatibility or predict performance.
Published range / Centrefire
.458
Centrefire catalogue entry
Listed twist options
1 published option
This panel reproduces True-Flite’s published twist list for this calibre. It does not assess bullet compatibility or predict performance.
Published range / Centrefire
.50
Centrefire catalogue entry
Listed twist options
2 published options
This panel reproduces True-Flite’s published twist list for this calibre. It does not assess bullet compatibility or predict performance.
The complete reference table.
| Calibre / designation | Category | Published twists |
|---|---|---|
| Centrefire | 1:8″, 1:10″, 1:12″ | |
| Rimfire | 1:14″, 1:16″ | |
| Centrefire | 1:7″, 1:8″, 1:9″, 1:10″, 1:12″ | |
| Centrefire | 1:7″, 1:7.5″, 1:8″, 1:10″, 1:13″, 1:14″ | |
| Centrefire | 1:7″, 1:7.5″, 1:8″, 1:10″ | |
| Centrefire | 1:7″, 1:7.5″, 1:8″, 1:8.5″, 1:9″ | |
| Centrefire | 1:7″, 1:8″, 1:10″ | |
| Centrefire | 1:8″, 1:8.5″, 1:9″, 1:10″ | |
| Centrefire | 1:7″, 1:8″, 1:9″, 1:10″, 1:11″, 1:12″, 1:13″, 1:14″, 1:17″ | |
| Centrefire | 1:10″ | |
| Centrefire | 1:7″, 1:8″, 1:9″, 1:10″ | |
| Centrefire | 1:10″ | |
| Centrefire | 1:12″ | |
| Centrefire | 1:9″, 1:10″ | |
| Centrefire | 1:16″ | |
| Centrefire | 1:14″ | |
| Centrefire | 1:9″, 1:15″ |
Twists reproduced from the True-Flite reference page, October 2026. The list is a catalogue reference, not live stock information. Select a calibre name in the table to update its panel.
Calibre
The labels identify the calibre entries in our published range. Some use an imperial designation, while others include a metric label.
Twist notation
Twist is shown using the catalogue’s 1:X-inch notation. The number describes the distance over which the rifling completes one revolution.
Reference information
The list records published options. It does not certify compatibility with a particular firearm, cartridge or bullet.
About this guide.
Does the selector recommend a twist rate?
No. It displays the options from the published True-Flite catalogue without ranking them or recommending one.
Are calibre and cartridge the same thing?
No. A calibre designation and a cartridge name describe different things. This page reproduces calibre labels rather than identifying a complete cartridge or firearm configuration.
Does this page show current stock?
No. It is a reference list and should not be interpreted as live stock or production availability.
Why are some calibres shown in both millimetres and inches?
The catalogue uses both naming conventions. The paired labels are retained here to make the existing entries easier to recognise.