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401 Winchester  WSL Cartridges
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The Winchester Company introduced the 401 WSL in 1910 for the Model 1910 SL rifle,
Please note, again:  SL = Self-Loading or Semi-Auto.
The 401WSL was more powerful than the 351 WSL and suitable for deer hunting;
however, the rifle was discontinued in 1936, and the 401 WSL cartridges, was produced
until app. early 1950s.
Below 3 different Head Stamps
Winchester Model 1910 SL Rifle
Chambered in 401 W.S.L.
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Remington
$ 7.75 per cartridge
Limit One
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$ 8.75 percartridge
Limit One
401 Winchester
Self-Loading
by Remington
"REM-UMC" Head Stamp
after Remington bought
UMC= Union Metallic
Cartridge Company, with
Nickel Primer, and Copper
Jacketed Soft Point
Projectile
401 Winchester
Self-Loading
by  Winchester
Repeating Arms
Company with
Nickel Primer, and
Copper Jacketed
Special Soft Point
Projectile
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$ 9.75 per  cartridge
Earlier Winchester
Winchester 401
Self-loading
"W.R.A.Co."
Head Stamp, and
"W" on the
Copper  Primer,
"W" on Nickel Plated
Copper Jacketed, Soft
Point Projectile
Limit One
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