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Winchester 42gr Max subsonic rimfire ammunition features
a unique 42gr Power Point truncated-nose hollow-point bullet.
This 42gr bullet produces better expansion compared to
other rimfire bullets so terminal performance is enhanced,
even at subsonic velocities, and functions better in semi-
automatic rifles too. Lubrication looks the same wax type as
on the 40gr bullet.As with the 40gr subsonic version, the 42gr Max bullet
has a very pronounced truncated look. It is wider at the top
end and more parallel and this is where the extra 2gr of lead
weight is added. It thus forms a blunter forward or front
section to the bullet that, when combined to the same hollow
point cavity, forces the side walls back rapidly and hits with
more surface area to release its kinetic energy immediately.
On the 40gr bullet, you have a diameter of 0.156" at the tip
compared to 0.176" on the heavier 42gr bullet.
They also make a black copper-plated lead subsonic bullet
of 45gr weight, which is designed for use in semi-automatic
weapons for reliable function – but that’s for another test on
semi-auto rounds.),(/'7(67
As usual, I set up the chronograph at 15 feet (I call that
muzzle velocity) from the Sako rimfire custom with 14.5"»
38 http://www.rifleshootermagazine.co.ukAMMUNITION TEST WITH BROADSWORD
3(1(75$7,217(676
Make Muzzle Muzzle Retained Maximum Penetration Maximum Wound
Velocity (fps) Energy (ft/lbs) Weight (grains) Expansion (inches) (inches) Diameter (inches) Channel (ml)
Win 40gr Subsonic 1022 93 32.0gr +8 gr shrapnel 0.3895 8.0 0.3125 12.65
Win 42gr Max subsonic 1049 103 30.25gr + 10gr shrapnel 0.5025 7.25 0.3361 18.575$-(&725<'2:15$1*(
Win 40gr Subsonic Muzzle 10yds 30yds 50yds 75yds 100yds
Velocity fps 1022 997 953 915 873 836
Energy ft/lbs 93 88 81 74 68 62
Drop inches -1.4 -0.8 +0.3 0 -2.8 -8.4
Wind Drift 10mph inches 0 0.1 0.6 1.6 3.4 5.9
Win 42gr Subsonic Muzzle 10yds 30yds 50yds 75yds 100yds
Velocity fps 1049 1038 1017 998 976 956
Energy ft/lbs 103 100 96 93 89 85
Drop inches -1.4 -0.9 +0.2 0 -2.2 -6.6
Wind Drift 10mph inches 0 0 0.2 0.7 1.4 2.5ABOVE: Not a lot of
difference in the
packaging, but a big
difference in
performanceLEFT: Note the
broader truncated
nose of the 42gr Win
Max (r) when seen
next to the classic
40gr Win subs (l)\ A FEW MORE GRAINS OF LEAD
CAN MAKE SUCH A DIFFERENCE
TO PERFORMANCE //