Sierra Tipped GameKing .284 140gr Bullets – Box of 500
The Sierra #4540 is a 7 mm/.284 Calibre (.284) 140 grain polymer tipped boat tail bullet from the Tipped GameKing line, supplied as a box of 500 component projectiles for handloading. Tipped GameKing bullets are an evolution of the GameKing design, combining a polymer tip with a boat tail profile for reliable expansion and strong downrange performance. They suit hunters who want a flat trajectory, consistent accuracy and controlled terminal behaviour. These are bullets only, not loaded ammunition, and must be assembled using appropriate, verified load data.
Specifications
| Parameter | Value |
|---|---|
| Caliber | .284 |
| Weight | 140 grains |
| Type | Polymers Tipped Boat Tail |
| Quantity | 500 bullets |
| Use | Handloading only |
FAQ
Are these bullets suitable for use in all .284 caliber rifles?
These bullets are designed for .284 caliber rifles and should be used with verified load data. Always consult a reloading manual or expert for compatibility and safety.
Do these bullets require special loading data?
Yes, these are component bullets and must be assembled using appropriate, verified load data. Use only proven load combinations for safety and performance.
Can these bullets be used for hunting purposes?
Yes, the Tipped GameKing design is optimized for hunting with reliable expansion and consistent terminal performance in game animals.


Dylan Ince –
I’ve used these bullets in my .284 rifle for several seasons. They offer excellent accuracy and consistent performance. The polymer tip ensures reliable expansion without overpenetration. Great for varmints and medium game. Handloading is straightforward with proper data.
Nicola Mathis –
The bullets are well-made and fit perfectly in my chamber. I’ve loaded them with a proven recipe and saw consistent groupings. The boat tail design helps with long-range shots. Slightly more expensive than standard bullets, but worth it for performance.
Alan Turner –
Used these in a recent hunting trip. The bullet expanded predictably and delivered clean, humane kills. The flat trajectory made long-range shots easier. Only recommend for experienced handloaders with proper data.