{"id":7577,"date":"2025-11-06T07:12:52","date_gmt":"2025-11-06T07:12:52","guid":{"rendered":"https:\/\/primeoutdoorshop.com\/?post_type=product&p=7577"},"modified":"2025-11-06T07:13:34","modified_gmt":"2025-11-06T07:13:34","slug":"underwood-458-socom-ammo-350-grain-full-metal-jacket-320-rounds","status":"publish","type":"product","link":"https:\/\/primeoutdoorshop.com\/index.php\/product\/underwood-458-socom-ammo-350-grain-full-metal-jacket-320-rounds\/","title":{"rendered":"Underwood 458 Socom Ammo 350 Grain Full Metal Jacket 320 ROUNDS"},"content":{"rendered":"

Underwood 458 Socom Ammo 350 Grain Full Metal Jacket Box of 20<\/h1>\n

Product Overview<\/h2>\n
\n
\n
\n

FMJ-FN bullets are non-expanding, powerfully penetrative bullets that are designed with your woods defense needs in mind; whether fending off wild hogs or black bears, the FMJ-FN bullets are consistently effective in taking down any wild animals that you may encounter.<\/p>\n

In contrast to the round nose non-expanding bullets, the flat nose bullets are able to pierce through dense bodies of mass while maintaining their nose forward position; the nose forward position is optimal for maximum penetration.<\/p>\n

As with all of Underwood Ammo rounds, they utilize flash suppressed powder so that your vision will not be compromised if it becomes necessary to use your firearm in low light.<\/p>\n

While taking advantage of their state of the art testing equipment, this high-performance ammunition is field tested using popular, real firearms that their customers are most likely to own out in the real world with all the elements you would experience.<\/p>\n

This ammunition is new production, non-corrosive, in boxer primed, reloadable brass cases.<\/p>\n

 <\/p>\n

Features<\/b><\/p>\n

    \n
  • This ammo is for cartridge size .458 SOCOM.<\/li>\n
  • The bullet is made from Brass, Lead.<\/li>\n
  • The diameter (caliber) of this bullet is 0.458.<\/li>\n
  • This bullet weighs 350 grains.<\/li>\n
  • This bullet leaves the barrel at 1650 feet per second.<\/li>\n
  • The ammo case is made from Brass.<\/li>\n
  • This ammo is a proven round for hunting.<\/li>\n
  • The bullet in this product does contain lead.<\/li>\n
  • This round is designed to be supersonic and travels faster than the speed of sound.<\/li>\n
  • The muzzle energy of this ammo is 2116 ft lbs.<\/li>\n
  • This product has been designed to be an effective choice for the ultimate in self-defense applications.<\/li>\n
  • The bullet in this product has a Sectional Density, (SD) of 0.238363112831563. SD is the ratio of an object’s mass to its cross sectional area with respect to a given axis. It conveys how well an object’s mass is distributed (by its shape) to overcome resistance along that axis.<\/li>\n
  • This ammo IS SAFE to use in a suppressor.<\/li>\n
  • The bullet in this ammo has a ballistic coefficient (G1) of – Generally, the higher the coefficient, the more stable the projectile will be in flight.<\/li>\n
  • Each box of ammo contains 20 loaded pieces of ammunition.<\/li>\n
  • This ammo is manufactured by Underwood Ammo<\/li>\n<\/ul>\n

    Specifications<\/h2>\n
    \n
    \n

    Product Information<\/h3>\n
      \n
    • Product #:\u00a0279050<\/li>\n
    • Manufacturer #:\u00a0461<\/li>\n
    • UPC #:\u00a0816874023539<\/li>\n<\/ul>\n<\/div>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
      Cartridge<\/td>\n458 Socom<\/td>\n<\/tr>\n
      Best Use<\/td>\nRange & Target<\/td>\n<\/tr>\n
      Grain Weight<\/td>\n350 Grains<\/td>\n<\/tr>\n
      Quantity<\/td>\n320 Round<\/td>\n<\/tr>\n
      Muzzle Velocity<\/td>\n1650 Feet Per Second<\/td>\n<\/tr>\n
      Muzzle Energy<\/td>\n2116 Foot Pounds<\/td>\n<\/tr>\n
      Bullet Style<\/td>\nFull Metal Jacket<\/td>\n<\/tr>\n
      Lead Free<\/td>\nNo<\/td>\n<\/tr>\n
      Case Type<\/td>\nBrass<\/td>\n<\/tr>\n
      Primer<\/td>\nBoxer<\/td>\n<\/tr>\n
      Corrosive<\/td>\nNo<\/td>\n<\/tr>\n
      Reloadable<\/td>\nYes<\/td>\n<\/tr>\n
      Velocity Rating<\/td>\nSupersonic<\/td>\n<\/tr>\n
      Country of Origin<\/td>\nUnited States of America<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

      Underwood 458 Socom Ammo 350 Grain Full Metal Jacket Box of 20 Product Overview FMJ-FN bullets are non-expanding, powerfully penetrative bullets that are designed with your woods defense needs in mind; whether fending off wild hogs or black bears, the FMJ-FN bullets are consistently effective in taking down any wild animals that you may encounter. […]<\/p>\n","protected":false},"featured_media":7578,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[275,266,268],"product_tag":[],"class_list":{"0":"post-7577","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-458-socom-ammo","7":"product_cat-ammo","8":"product_cat-rifle-ammo","10":"first","11":"instock","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"yoast_head":"\nUnderwood 458 Socom Ammo 350 Grain Full Metal Jacket 320 ROUNDS - primeoutdoorshop.com<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/primeoutdoorshop.com\/index.php\/product\/underwood-458-socom-ammo-350-grain-full-metal-jacket-320-rounds\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Underwood 458 Socom Ammo 350 Grain Full Metal Jacket 320 ROUNDS\" \/>\n<meta property=\"og:description\" content=\"Underwood 458 Socom Ammo 350 Grain Full Metal Jacket Box of 20 Product Overview FMJ-FN bullets are non-expanding, powerfully penetrative bullets that are designed with your woods defense needs in mind; whether fending off wild hogs or black bears, the FMJ-FN bullets are consistently effective in taking down any wild animals that you may encounter. […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/primeoutdoorshop.com\/index.php\/product\/underwood-458-socom-ammo-350-grain-full-metal-jacket-320-rounds\/\" \/>\n<meta property=\"og:site_name\" content=\"primeoutdoorshop.com\" \/>\n<meta property=\"article:modified_time\" content=\"2025-11-06T07:13:34+00:00\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Price\" \/>\n\t<meta name=\"twitter:data1\" content=\"550.00$\" \/>\n\t<meta name=\"twitter:label2\" content=\"Availability\" \/>\n\t<meta name=\"twitter:data2\" content=\"In stock\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":[\"WebPage\",\"ItemPage\"],\"@id\":\"https:\/\/primeoutdoorshop.com\/index.php\/product\/underwood-458-socom-ammo-350-grain-full-metal-jacket-320-rounds\/\",\"url\":\"https:\/\/primeoutdoorshop.com\/index.php\/product\/underwood-458-socom-ammo-350-grain-full-metal-jacket-320-rounds\/\",\"name\":\"Underwood 458 Socom Ammo 350 Grain Full Metal Jacket 320 ROUNDS - primeoutdoorshop.com\",\"isPartOf\":{\"@id\":\"https:\/\/primeoutdoorshop.com\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/primeoutdoorshop.com\/index.php\/product\/underwood-458-socom-ammo-350-grain-full-metal-jacket-320-rounds\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/primeoutdoorshop.com\/index.php\/product\/underwood-458-socom-ammo-350-grain-full-metal-jacket-320-rounds\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/primeoutdoorshop.com\/wp-content\/uploads\/2025\/11\/Underwood-458-Socom-Ammo-350-Grain-Full-Metal-Jacket-Box-of-20.avif\",\"datePublished\":\"2025-11-06T07:12:52+00:00\",\"dateModified\":\"2025-11-06T07:13:34+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/primeoutdoorshop.com\/index.php\/product\/underwood-458-socom-ammo-350-grain-full-metal-jacket-320-rounds\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/primeoutdoorshop.com\/index.php\/product\/underwood-458-socom-ammo-350-grain-full-metal-jacket-320-rounds\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/primeoutdoorshop.com\/index.php\/product\/underwood-458-socom-ammo-350-grain-full-metal-jacket-320-rounds\/#primaryimage\",\"url\":\"https:\/\/primeoutdoorshop.com\/wp-content\/uploads\/2025\/11\/Underwood-458-Socom-Ammo-350-Grain-Full-Metal-Jacket-Box-of-20.avif\",\"contentUrl\":\"https:\/\/primeoutdoorshop.com\/wp-content\/uploads\/2025\/11\/Underwood-458-Socom-Ammo-350-Grain-Full-Metal-Jacket-Box-of-20.avif\",\"width\":680,\"height\":510},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/primeoutdoorshop.com\/index.php\/product\/underwood-458-socom-ammo-350-grain-full-metal-jacket-320-rounds\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/primeoutdoorshop.com\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Shop\",\"item\":\"https:\/\/primeoutdoorshop.com\/index.php\/shop-2\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Underwood 458 Socom Ammo 350 Grain Full Metal Jacket 320 ROUNDS\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/primeoutdoorshop.com\/#website\",\"url\":\"https:\/\/primeoutdoorshop.com\/\",\"name\":\"primeoutdoorshop.com\",\"description\":\"\",\"publisher\":{\"@id\":\"https:\/\/primeoutdoorshop.com\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/primeoutdoorshop.com\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/primeoutdoorshop.com\/#organization\",\"name\":\"primeoutdoorshop.com\",\"url\":\"https:\/\/primeoutdoorshop.com\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/primeoutdoorshop.com\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/primeoutdoorshop.com\/wp-content\/uploads\/2023\/06\/Logo.png\",\"contentUrl\":\"https:\/\/primeoutdoorshop.com\/wp-content\/uploads\/2023\/06\/Logo.png\",\"width\":514,\"height\":154,\"caption\":\"primeoutdoorshop.com\"},\"image\":{\"@id\":\"https:\/\/primeoutdoorshop.com\/#\/schema\/logo\/image\/\"}}]}<\/script>\n<meta property=\"product:price:amount\" content=\"550.00\" \/>\n<meta property=\"product:price:currency\" content=\"USD\" \/>\n<meta property=\"og:availability\" content=\"instock\" \/>\n<meta property=\"product:availability\" content=\"instock\" \/>\n<meta property=\"product:condition\" content=\"new\" \/>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Underwood 458 Socom Ammo 350 Grain Full Metal Jacket 320 ROUNDS - primeoutdoorshop.com","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/primeoutdoorshop.com\/index.php\/product\/underwood-458-socom-ammo-350-grain-full-metal-jacket-320-rounds\/","og_locale":"en_US","og_type":"article","og_title":"Underwood 458 Socom Ammo 350 Grain Full Metal Jacket 320 ROUNDS","og_description":"Underwood 458 Socom Ammo 350 Grain Full Metal Jacket Box of 20 Product Overview FMJ-FN bullets are non-expanding, powerfully penetrative bullets that are designed with your woods defense needs in mind; whether fending off wild hogs or black bears, the FMJ-FN bullets are consistently effective in taking down any wild animals that you may encounter. […]","og_url":"https:\/\/primeoutdoorshop.com\/index.php\/product\/underwood-458-socom-ammo-350-grain-full-metal-jacket-320-rounds\/","og_site_name":"primeoutdoorshop.com","article_modified_time":"2025-11-06T07:13:34+00:00","twitter_card":"summary_large_image","twitter_misc":{"Price":"550.00$","Availability":"In stock"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":["WebPage","ItemPage"],"@id":"https:\/\/primeoutdoorshop.com\/index.php\/product\/underwood-458-socom-ammo-350-grain-full-metal-jacket-320-rounds\/","url":"https:\/\/primeoutdoorshop.com\/index.php\/product\/underwood-458-socom-ammo-350-grain-full-metal-jacket-320-rounds\/","name":"Underwood 458 Socom Ammo 350 Grain Full Metal Jacket 320 ROUNDS - primeoutdoorshop.com","isPartOf":{"@id":"https:\/\/primeoutdoorshop.com\/#website"},"primaryImageOfPage":{"@id":"https:\/\/primeoutdoorshop.com\/index.php\/product\/underwood-458-socom-ammo-350-grain-full-metal-jacket-320-rounds\/#primaryimage"},"image":{"@id":"https:\/\/primeoutdoorshop.com\/index.php\/product\/underwood-458-socom-ammo-350-grain-full-metal-jacket-320-rounds\/#primaryimage"},"thumbnailUrl":"https:\/\/primeoutdoorshop.com\/wp-content\/uploads\/2025\/11\/Underwood-458-Socom-Ammo-350-Grain-Full-Metal-Jacket-Box-of-20.avif","datePublished":"2025-11-06T07:12:52+00:00","dateModified":"2025-11-06T07:13:34+00:00","breadcrumb":{"@id":"https:\/\/primeoutdoorshop.com\/index.php\/product\/underwood-458-socom-ammo-350-grain-full-metal-jacket-320-rounds\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/primeoutdoorshop.com\/index.php\/product\/underwood-458-socom-ammo-350-grain-full-metal-jacket-320-rounds\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/primeoutdoorshop.com\/index.php\/product\/underwood-458-socom-ammo-350-grain-full-metal-jacket-320-rounds\/#primaryimage","url":"https:\/\/primeoutdoorshop.com\/wp-content\/uploads\/2025\/11\/Underwood-458-Socom-Ammo-350-Grain-Full-Metal-Jacket-Box-of-20.avif","contentUrl":"https:\/\/primeoutdoorshop.com\/wp-content\/uploads\/2025\/11\/Underwood-458-Socom-Ammo-350-Grain-Full-Metal-Jacket-Box-of-20.avif","width":680,"height":510},{"@type":"BreadcrumbList","@id":"https:\/\/primeoutdoorshop.com\/index.php\/product\/underwood-458-socom-ammo-350-grain-full-metal-jacket-320-rounds\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/primeoutdoorshop.com\/"},{"@type":"ListItem","position":2,"name":"Shop","item":"https:\/\/primeoutdoorshop.com\/index.php\/shop-2\/"},{"@type":"ListItem","position":3,"name":"Underwood 458 Socom Ammo 350 Grain Full Metal Jacket 320 ROUNDS"}]},{"@type":"WebSite","@id":"https:\/\/primeoutdoorshop.com\/#website","url":"https:\/\/primeoutdoorshop.com\/","name":"primeoutdoorshop.com","description":"","publisher":{"@id":"https:\/\/primeoutdoorshop.com\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/primeoutdoorshop.com\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/primeoutdoorshop.com\/#organization","name":"primeoutdoorshop.com","url":"https:\/\/primeoutdoorshop.com\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/primeoutdoorshop.com\/#\/schema\/logo\/image\/","url":"https:\/\/primeoutdoorshop.com\/wp-content\/uploads\/2023\/06\/Logo.png","contentUrl":"https:\/\/primeoutdoorshop.com\/wp-content\/uploads\/2023\/06\/Logo.png","width":514,"height":154,"caption":"primeoutdoorshop.com"},"image":{"@id":"https:\/\/primeoutdoorshop.com\/#\/schema\/logo\/image\/"}}]},"product_price_amount":"550.00","product_price_currency":"USD","og_availability":"instock","product_availability":"instock","product_condition":"new"},"_links":{"self":[{"href":"https:\/\/primeoutdoorshop.com\/index.php\/wp-json\/wp\/v2\/product\/7577","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/primeoutdoorshop.com\/index.php\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/primeoutdoorshop.com\/index.php\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/primeoutdoorshop.com\/index.php\/wp-json\/wp\/v2\/comments?post=7577"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/primeoutdoorshop.com\/index.php\/wp-json\/wp\/v2\/media\/7578"}],"wp:attachment":[{"href":"https:\/\/primeoutdoorshop.com\/index.php\/wp-json\/wp\/v2\/media?parent=7577"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/primeoutdoorshop.com\/index.php\/wp-json\/wp\/v2\/product_brand?post=7577"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/primeoutdoorshop.com\/index.php\/wp-json\/wp\/v2\/product_cat?post=7577"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/primeoutdoorshop.com\/index.php\/wp-json\/wp\/v2\/product_tag?post=7577"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}