Underwood Ammo Xtreme Penetrator Nickel Plated Brass .500 SW 420 Grain 20-Rounds SM
Price History (90 Days)
Is This a Good Price?
All-Time LowThis is the lowest price we have recorded for this product.
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How This Compares to the .500 S&W Magnum Market
Live across the 52 in-stock .500 S&W Magnum listings we track.
Underwood Ammo Xtreme Penetrator Nickel Plated Brass .500 SW 420 Grain 20-Rounds SM Overview
This is a 20-round pack of .500 S&W Magnum in 420gr. At the current price that works out to $4.730 per round, or $4,730.00 per 1,000.
At $94.59 this is the lowest price we have recorded in 89 days of tracking.
At $4.730 per round it sits 45% above the $3.273 average across the 52 .500 S&W Magnum listings we track. The cheapest credible .500 S&W Magnum we track right now is $2.195 per round.
Figures above are generated from our own price tracking and refresh automatically. Last checked Oct 16, 2026.
Specifications
| Caliber | .500 S&W Magnum |
|---|---|
| Bullet Weight | 420 gr |
| Rounds per Pack | 20 |
| Cost per Round | $4.730 |
| Case Material | Nickel-Plated Brass |
| Category | Handgun Ammo |
| UPC | 816874023195 |
| SKU | GAG_UB347 |
Cheaper .500 S&W Magnum Options
Lower cost per round than this listing, in stock right now.
| Product | Pack | Price | Per Round |
|---|---|---|---|
| HSM/Hunting Shack Special Ultra Max Brass .500 SW 3… | 20 | $36.19 | $1.810 |
| DoubleTap SnakeShot .500 SW 380 Grain 20-Rounds HFW… | 20 | $42.09 | $2.105 |
| DoubleTap 500 Hunter .500SW Box of 20 | 20 | $43.89 | $2.195 |
| Ultramax Max +P .500 SW 440 Grain 20-Rounds Hi-Tek … | 20 | $45.09 | $2.255 |
Questions About This Deal
Is this a good price right now? +
Yes. At $94.59 this matches the lowest price we have recorded for it. Its 90-day average is $94.59. Set a price alert and we will email you if it drops.
How does this compare to other .500 S&W Magnum ammo? +
It works out to $4.730 per round. The average across the 52 .500 S&W Magnum listings we track is $3.273 per round, and the cheapest credible listing is $2.195. Cost per round is the only fair way to compare ammunition, because pack sizes are not standardised.
How much does shipping add to the cost? +
Ammunition ships by ground and is priced by weight, so it matters. Work out the landed cost: add shipping to the box price, then divide by 20 rounds. A pack that is a dollar cheaper but ships for more is not cheaper.
How often is this price updated? +
We re-check every retailer daily and record a new entry whenever the price moves. We have 89 days of price history on this product and have logged 89 price changes in the last 90 days.
Before You Buy
Our guides on how to price and choose this kind of product.
