New York Firearms Forum banner
1 - 8 of 8 Posts

·
Registered
Joined
·
2,982 Posts
Discussion Starter · #1 ·
First Look: .17 Win Super Mag

Winchester is initially introducing three loads for the .17 Super Mag. These include a Varmint HV (high velocity) load using a 20 grain Plastic Tip bullet at a MV of 3000 fps (#S17W20), a Super-X load with a 20 grain JHP bullet at the same MV (#X17W20) and a Varmint HE (high energy) load with a 25 grain Plastic Tip bullet at a MV of 2600 fps (#S17W25). These three loads are offered in 50 round boxes or 1000 round cases. Presumably, the Super-X load will be the least expensive, since the HV and HE loads are in the premium Winchester Supreme ammunition line.

Winchester's initial press release did not include trajectory information about the .17 Super Mag loads, but assuming that Winchester's 20 grain Plastic Tip bullet (SD .097) is similar in form to the Hornady 20 grain V-Max bullet (in the press release they look identical), which has a ballistic coefficient of .185, I should be able to come close. Here is the MPBR (+/- 1.5") trajectory for the 20 grain V-Max at 3000 fps MV, calculated for a 1.5" sight height using standard conditions (range / bullet path / velocity / energy):

Muzzle / -1.5" / 3000 fps / 400 ft. lbs.
25 yds / -0.3" / 2872 fps / 366 ft. lbs.
50 yds / +0.6" / 2747 fps / 335 ft. lbs.
75 yds / +1.2" / 2626 fps / 306 ft. lbs.
100 yds / +1.5" / 2508 fps / 279 ft. lbs.
125 yds / +1.5" / 2394 fps / 254 ft. lbs.
150 yds / +1.0" / 2283 fps / 231 ft. lbs.
175 yds / +0.2" / 2175 fps / 210 ft. lbs.
200 yds / -1.1" /2069 fps / 190 ft. lbs.
225 yds / -2.9" / 1966 fps / 172 ft. lbs.
250 yds / -5.3" / 1867 fps / 155 ft. lbs.

The MPBR of that load is 207 yards (+/- 1.5").
 
1 - 8 of 8 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top