.375 Remington Ultra Mag (RUM) 300 Grain Nosler Partition~100% Hand-Loaded!!
$145.99
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Common Questions
Yes, there may be restrictions on the sort of ammunition permitted for hunting in your area. These regulations may include limitations on bullet design, bullet weight, or ammunition attributes. It is critical to read and follow the hunting restrictions established by the local wildlife or hunting authority.
Yes, there may be restrictions on the sort of ammunition permitted for hunting in your area. These regulations may include limitations on bullet design, bullet weight, or ammunition attributes. It is critical to read and follow the hunting restrictions established by the local wildlife or hunting authority.
Yes, there may be restrictions on the sort of ammunition permitted for hunting in your area. These regulations may include limitations on bullet design, bullet weight, or ammunition attributes. It is critical to read and follow the hunting restrictions established by the local wildlife or hunting authority.
Yes, there may be restrictions on the sort of ammunition permitted for hunting in your area. These regulations may include limitations on bullet design, bullet weight, or ammunition attributes. It is critical to read and follow the hunting restrictions established by the local wildlife or hunting authority.
Yes, there may be restrictions on the sort of ammunition permitted for hunting in your area. These regulations may include limitations on bullet design, bullet weight, or ammunition attributes. It is critical to read and follow the hunting restrictions established by the local wildlife or hunting authority.
Yes, there may be restrictions on the sort of ammunition permitted for hunting in your area. These regulations may include limitations on bullet design, bullet weight, or ammunition attributes. It is critical to read and follow the hunting restrictions established by the local wildlife or hunting authority.
Terms & Conditions
I acknowledge and confirm that I am ordering items listed on this website and agree to the following conditions:
Must be 18 years old or older, depending on your state laws. Buyer is entirely responsible for compliance with all local laws. Know the rules and laws that apply to you before you buy.
Our ammunition is loaded to SAAMI specifications unless otherwise noted. Any firearm modified from its original, factory condition, may not match the performance achieved through our extensive testing at our facilities. This includes primer detonation, accuracy, and stated velocities.
WARRANTY:
Choice Ammunition, Corp. warrants our ammunition for a period of one year, to be free of defects in workmanship and materials. If we find the ammunition to be defective for either of these reasons, we will replace the ammunition free of charge including shipping.
We carefully evaluate any warranty claim on a case by case basis. Please contact us at 406-961-6942 to report any issue and receive a specific RMA (Return Merchandise Authorization) number for your case and return. We strive to provide unmatched customer service in the industry. Please be courteous and show patience while an unfortunate warranty claim is being reviewed.
Payments, Shipping, & Refunds
Payments
We accept the following forms of payment:
- 1. Credit Card through our website’s secure checkout
- 2. Credit Card through our phone at 406-961-6942 Check or money order.
Shipping
- Most orders shipped through UPS ground with detailed tracking provided.
- Standard delivery time is 2-7 business days from the date your order was placed.
Return Policy:
All sales are final. No returns of product allowed.
Order Cancellation Policy:
You may cancel an order ONLY if you contact us prior to shipping. We ship 95% of all orders within 36 hours of being placed, so you must contact us immediately if you wish to cancel your order.
PRIVACY POLICY – COMMITMENT TO YOUR PRIVACY
This site is owned and operated by Choice Ammunition, Corp. Your privacy is of the utmost importance to us. All credit card information processed through our secure server is not stored by us other than name and contact information.
We do not sell or provide your information or any order information with any third parties.
CA PROPOSITION 65 WARNING
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Choice Ammunition manufactures premium hand-loaded ammunition in Victor, Montana.
Every round is individually loaded by trained technicians using proprietary powder formulas and undergoes 100% visual inspection before packaging.
We use only premium components—Nosler, Barnes, Berger, Hornady, and Sierra bullets paired with new brass from top suppliers.
Our load development experts and ballisticians create precise powder charges and consistent seating depths across 700+ options in 25 pistol and 75 rifle calibers.
From varmint hunting to African dangerous game, defense to cowboy action shooting, we deliver the accuracy and reliability that serious shooters demand with superior customer service and fast shipping
.375 Remington Ultra Mag 300 Grain Nosler Partition-The .375 Remington Ultra Magnum, also known as the .375 RUM is a .375 rifle cartridge introduced by Remington Arms in 2000. The cartridge is intended for large and dangerous game.
It is a beltless, rebated rim cartridge created by necking up the .300 Remington Ultra Magnum case to .375 caliber with no other changes. Factory loadings are less powerful than handloads for the cartridge. Remington factory loads push a 300 grain bullet at 2760 ft/s producing 5070 ft·lbf of energy.
During 1999 Remington Arms introduced their .300 Remington Ultra Magnum, an extremely powerful cartridge based loosely on the .404 Jeffery cartridge case design blown out to maximum dimensions. In the same year Remington announced that they intended to introduce both a .338 RUM and 7mm RUM, both arrived on the market in 2000. Following this, Remington made another statement in the year 2000 of their intention to introduce a .375 caliber RUM. The .375 RUM was released in 2001 and is the largest of the Remington Ultra Magnum cartridges.
The case design of the .375 RUM is the same as its 7mm and .30 caliber counterparts. These three cartridges differ from the .338 RUM in that the .338 has a slightly shorter case for the sake of a comfortable cartridge overall length (COAL) within the limits of the Remington M700 rifle magazine.
Choice Ammunition has taken our 100% hand-loading techniques and produce an extremely accurate, highly dependable round for the .375 Remington Ultra Magnum in this load. Our loading tolerances are only matched by passionate hand-loaders in their own loading rooms. Consistent seating depths, powder charges and proprietary formulas of Choice Ammunition, make this 300 Grain Nosler Partition round the best you can buy on the commercial market today.
The Bullet:
Partition Bullets feature a fully tapered jacket that ruptures instantly at the thin jacket mouth, yet the gradual thickening along the bullet’s axis controls expansion and curls the jacket uniformly outward at high or low velocities. Nosler’s integral Partition supports the expanded mushroom and retains the rear lead alloy core. The enclosed rear core retains more than half the original bullet weight for deep penetration. The special crimp locks in the rear core section, adding strength to resist deformation under the pressure of heavy magnums.This makes this round no match for Deer, Sheep, Pronghorn and Black Bear and other medium-sized game.
- Velocity 2,786 fps
- 100% Hand Loaded
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