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Heavy 348 Winchester Ammo - 250 gr. J.F.N. 
(2,250 fps/M.E. 2,810 ft.lbs.)
20 Round Box


ITEM 12A


BUFFALO BORE’s 348 WINCHESTER AMMO


Over the decades, I’ve owned six or seven rifles/carbines chambered for 348 Win. in the model 71. Four of those were the Browning reproductions made in Japan. It is easily evident that the Japanese reproductions are of higher quality than the original Winchester’s. Not only were all my Browning’s more accurate than the Winchesters, but the 20-inch carbine Browning, will give about the same velocity as the 24 inch Winchester rifle……..and the 24 inch Browning will give 100 to 150 fps more velocity than the 20 inch Browning version.

The Browning reproduction pictured above is my only remaining firearm chambered in 348 Winchester. With our modern 250 gr., 348 Winchester ammo, it generates roughly 2,250 fps. We’ve been making 348 Winchester ammo for almost 20 years as of this writing. (08-12-18) Over the years we’ve used AK Bullet Works 250gr. bullet, but they could never keep up with demand, so I switched to Hawk bullets but had issues with quality. After much testing, we’ve settled on the 250 gr. Barnes Original Bullet. It is very accurate and constructed stiff enough to not over-mushroom, but it still mushrooms fairly radically.


In 2013, Winchester quit making 348 brass, so we’ve been out of loaded 348 ammo since 2014. Enter Starline brass. I started bugging the good folks at Starline over four years ago, to make 348 brass. Well, they finally got it done and it is excellent brass.


Our single 348 Winchester load operates at or under the old SAAMI guideline of 43,000 CUP, so it is safe to use in any/all rifles thusly chambered, that are in normal operating condition. If you email me and ask if this load is safe to use in your rifle, “just to be sure”, I promise I will tell you nothing more than what is written here! So please save us both the time.


Having killed dozens of bears, including many grizzlies, I have formed an opinion or two on “bear” cartridges………Our 348 ammo is very capable of killing/stopping aggressive interior grizzly, which rarely weigh more than 600 lbs... Coastal grizzly, known as AK Brown Bear, when they are in AK, can weigh more than 1,000 lbs. and I see our 348 Winchester load as MINIMUM for such large coastal grizzly. This 348 load would be a great short range (under 250 yards) elk or moose load too. AK still has many a guide, and resident hunter carrying original Winchester model 71’s and we hope to provide those folks with quality ammo for decades, now that we can get brass.


Good shooting and God bless,


Tim Sundles


This ammo is safe to use in any Winchester or Browning Model 71 that is in good condition.  Chamber pressures are 33,000 CUP

Buffalo Bore, 348 Winchester Ammo, 250 Grain Bonded Flat Nose, Box of 20

  • Brand: Buffalo Bore
  • Product Code: BCW-BB-12A/20
  • Availability: In Stock
  • $120.00 USD