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20 GA 3" MAG 1-1/8 oz. #4
Purchase 20 GA 3" MAG 1-1/8 oz. #4

20 GA 3" MAG 1-1/8 oz. #4

SKU: 20-GA-3-118-4
★★★★★ ★★★★★ 5/5 Stars. (32 Reviews)

1-1/8 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.


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Gauge: 20 GA
Length: 3"
Payload: 1-1/8 oz
Shot size: #4
Velocity: 1350 fps


★★★★★ ★★★★★
5/5 Stars out of 32 Reviews
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Verified Buyer
South Dakota pheasants
Kyle (Bridgman, MI) | January 28th, 2023
Hunted South Dakota pheasants in December this year. The #4 Boss bismuth performed flawlessly. The shells cycled perfectly, and had plenty of knock down power, even on those tough, late-season roosters. I'll be buying more!
Verified Buyer
Throwing Stones
Lucas (Texas) | January 11th, 2023
I had some reservations about switching to a 20 gauge this season - and I think it really just comes down to the shell selection. I was tired of shooting cripples and working so hard to get ducks in to watch them fly away - so I switched from shooting my 12 gauge with the cheapest waterfowl loads I could find to shooting BOSS 4's in my 20 gauge to see if I could tell the difference - same payload, better FPS, and absolutely stoning birds on the first shot. Some things are worth their weight in gold (or copper-plated bismuth).
Verified Buyer
Sean Kenny (New York) | January 10th, 2023
I purchased Boss #4 shot in the 3" shell for my 20 gauge. I went on a diver/goose hunt today, 1/10/23, and those shells were devastating. They took down everything I connected with from a bufflehead, to the 2 bluebills and finally a Canada Goose. I couldn't be happier. This is an excellent product. I look forward to many years hunting with this ammunition. Thank you Boss.
Verified Buyer
Smoked Em
Ross (Texas) | November 21st, 2022
Used these this past weekend and the ducks didn't even stand a chance. With these we were able to shoot our limit little over an hour. After shooting these, I see no need to ever shoot anything else ever again.
Verified Buyer
100% BOSS
Grayson Krause (Maine) | November 10th, 2022
Been using strictly boss for the past 3 years on anything from sea ducks to puddlers and I have zero complaints. It hits hard and performs exceptionally. Nice to be able to bring the subgauges out now as well
Verified Buyer
Boss 20ga #4
Brandon (Kentucky) | August 22nd, 2022
Stone cold killers!!!!!!!
Verified Buyer
Memories of steel
Davey (Ga.) | August 15th, 2022
Great product, and great customer service. This shell is so close to the days of steel shot. Fantastic pattern’s. Many thanks!
Verified Buyer
This Year It’s Boss Exclusively for Ducks
Bruce from MO (Warrensburg, MO) | June 9th, 2022
Been duck hunting for 40 years so I remember shooting lead, transitioning to the first steel shells…to 3 1/2 inch… to 1,500+ fps steel…to Black Cloud…to Kent Bismuth…to Boss Bismuth exclusively. We mic, weigh & count pellets, chrono & pattern all of our guns, choke tubes and loads we intend to buy and shoot. Hands down Boss is more consistent in size, weight, patterning and fps than any other shells we have checked. Boss quality is unsurpassed! Sold the last of my Black Cloud and Kent Bismuth last weekend at a duck hunter’s yard sale we had…now it’s Boss 4s & 5s in 12 ga and 4s &6s in 20 ga exclusively from here on out. Boss puts them on the water with cripples few and far between. So much better than any other shell I have used since non-toxic shells required for waterfowl!!!
Verified Buyer
Boss 20 ga, 3" #4's
Scott Frederick (Paris,TN) | March 18th, 2022
I shot these exclusively during the 2021-2022 waterfowl season, shot the same in #5's last year. These loads are killers for sure, however it took some testing with different chokes to achieve the desired patterns wanted at specific yardage. As always pattern your gun, choke and loads. In my set up, Benelli M2, Boss 3", #4 with a Hevi shot ER choke tube at 40yds it's lights out for any duck. This combo patterns as well as anything I've ever shot. Find your correct set up with these shells and forget it. I'm very pleased with this product and will continue to shoot these untill I can't afford it or die.
Verified Buyer
Freaking Hammers!!!!
Ryan (Kansas) | January 24th, 2022
I have read and heard about all the hype of Boss Shotshells and let me tell you it is all true!! The 12 gauge has been taking a backseat to my Benelli M2 20 gauge its lighter and more enjoyable to shoot and with Boss shells it flat out hammers the mallards and have even shot some crows with the 3in. #4’s. Went on a dryland cornfield hunt this past weekend and all my buddy’s were asking why I brought my 20ga. After a few volleys and them watching me shoot clean up on birds that were trying to get away and stoning them at impressive ranges they asked what the heck was I shooting for shells!!!!! Told them Boss the best there is!!!!! Can’t wait to get stocked up on more when they are available and contemplating getting a 28ga and running some Boss shells in it after seeing what the 20ga. Boss Shotshells can do. Thanks for great product great customer service and fast shipping also.
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20 GA 3" MAG 1-1/8 oz. #4
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