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12 GA 3" 1 3/8 oz. #4
Purchase 12 GA 3" 1 3/8 oz. #4

12 GA 3" 1 3/8 oz. #4

SKU: 12-GA-3-138-4
★★★★★ ★★★★★ 5/5 Stars. (5 Reviews)

1-3/8 oz. payload, travels at 1350 fps, lead-free and non-toxic 

  • Obsessively engineered for optimal pattern density and uniformity 
  • Custom hull and hot primer for optimal cold weather performance 
  • Legendary BOSS Moneybag included with bulk packed cases



Shipping Ammunition:

Please note that ammo cannot ship to Alaska, Hawaii, NYC and Washington, DC.


Gauge: 12 GA
Length: 3"
Payload: 1-3/8 oz
Shot size: #4
Velocity: 1350 fps


★★★★★ ★★★★★
5/5 Stars out of 5 Reviews
Verified Buyer
Boss Products
Decoy Smith (Long Island, New York) | January 23rd, 2023
I've ordered several items from Boss over the last few years. Great customer service and fast shipping! Love their products. I'm a lifetime duck hunter who appreciates great quality and service! Thanks
BOSS #4 and #3s
Dan Buretta (Muskego, Wisconsin) | December 23rd, 2022
Was just down in Kansas on a duck hunt using BOSS #4 and #3s in 1-3/8 ounces. Was awesome. Dropped mallards and canada geese dead in their tracks. Our guide did not have to waste time chasing wounded birds. Got us more hunting time. BOSS ammo is all I have been using the past three years. Going snow goose hunting in February and hope to get 10 gauge BOSS in #2 and in #1s . I know they will perform far better than the steel I had been using. BOSS ammo is the "BOSS"!!
Verified Buyer
1 3/8 #4
Matt (Minnesota) | December 13th, 2022
These 1 3/8 4s absolutely crush late season roosters
Boss Products
terry l collier (Paducah,ky) | December 13th, 2022
i have ordered 4 or 5 case of 20 gauge and 12 gauge shells. not 1 bad shell in the cases i bought. service is outstanding.. shipment always shipped in a timely matter. Boss shot shells is all you will ever need. thanks for the best shell on the market. Terry Collier
Verified Buyer
Different Hulls
Wayne (Texas) | April 1st, 2022
Been using BOSS shells for two years now with excellent results. Recently ordered 2 cases of 3" #4s and noticed the hulls had changed compared to all other BOSS shells I've ever seen. BOSS said the change is a result of a supply shortage but should not adversely impact performance. They hope the change is only temporary and will revert back to the original hulls later in 2022. I won't shoot these until next Fall but trust they will be perfectly fine. Just something for customers to be aware of if they are considering ordering some shells but don't need them right away.
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12 GA 3" 1 3/8 oz. #4
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