Winchester DynaPoint, .22 WMR, CPHP, 45 Grain
Ammo Reports Team
| Official Spec | Value |
|---|---|
| Manufacturer | Winchester Ammunition |
| Cartridge | 22 WMR |
| Product Line | USA |
| Bullet Name / Bullet Type | Copper Plated DynaPoint |
| Bullet Weight | 45 grain |
| SKU / Part Number / Item Number | USA22M |
| UPC | Not found |
| Rounds per Box | 50 |
| Muzzle Velocity | 1550 fps |
| Muzzle Energy | 240 ft-lbs |
| Ballistic Coefficient G1 | Not found |
| Ballistic Coefficient G7 | Not found |
| Case Material | Brass |
| Primer | Rimfire priming |
| Reloadable | No |
| Test Barrel Length | Not found |
| Zero Distance | Not found |
| Sight Height | Not found |
| Intended Use | Target shooting, plinking, and small game |
| Product Status | Current |
| Closest Competitors | CCI Maxi-Mag 40gr TMJ; Hornady V-Max 30gr; Federal Premium 50gr JHP |
Data is based on official manufacturer sources. Found an error? Send us the source link.
Specifications were checked against the current Winchester Ammunition product catalog. Fields the manufacturer does not publish are marked Not found instead of being estimated.
Key Takeaway
Winchester USA22M combines a 45-grain Copper Plated DynaPoint bullet with an official muzzle velocity of 1550 fps and muzzle energy of 240 ft-lbs.
Official Ballistics
Winchester publishes 1550 fps and 240 ft-lbs at the muzzle. G1 and G7 ballistic coefficients are not published for USA22M, so the former estimated trajectory table has been removed.
Actual velocity can vary with barrel length, firearm, ammunition lot, temperature, and measurement method. No wind-drift values are shown because the manufacturer does not publish a complete wind-data set for this load.
Bullet and Load Design
The Copper Plated DynaPoint bullet uses a plated surface and a hollow-point-style nose. At 45 grains, it is heavier than many high-velocity 30- and 33-grain 22 WMR varmint loads.
Best Uses
Winchester positions the USA rimfire line as a value-oriented choice for range use. The DynaPoint configuration also makes this load relevant to plinking and small game applications where legal.
Reliability Notes
Rimfire ammunition can be firearm-sensitive. Confirm feeding, extraction, ignition, and point of impact in the specific firearm before relying on any load for its intended purpose. Keep ammunition dry and inspect every cartridge before use.
Closest Competitors
| Competing Load | Comparison |
|---|---|
| CCI Maxi-Mag 40gr TMJ | A slightly lighter non-expanding 40-grain option. |
| Hornady V-Max 30gr | A lighter and faster polymer-tip varmint option. |
| Federal Premium 50gr JHP | A heavier hollow-point alternative. |
Price Reality
Retail pricing and availability change frequently. Compare the exact manufacturer item number, box quantity, shipping cost, and local restrictions before purchasing.
Where to Buy
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Frequently Asked Questions
What is the velocity of Winchester USA22M?
Winchester lists 1550 fps.
What is the muzzle energy of USA22M?
Winchester lists 240 ft-lbs at the muzzle.
What bullet weight does USA22M use?
It uses a 45-grain Copper Plated DynaPoint bullet.
How many rounds are in a box?
Winchester lists 50 rounds per box.
Is USA22M reloadable?
No. It is rimfire ammunition and is not reloadable.
