Part #: P41B

Take down anything from hogs to bear with a reliable CastCore® offering from Federal Premium®. These trusted loads’ hard, flat-nose, cast-lead bullets hold together while smashing through bone, providing nearly 100 percent weight retention and deep penetration on the toughest game.

  • Caliber: 41 Rem Magnum
  • Bullet Weight (grains): 250
  • Bullet Style: CastCore
  • Muzzle Velocity: 1160
  • Ballistic Coefficient: .220
  • Package Quantity: 20
  • Use: Hunting
  • MSRP: $44.95
zoom_in CastCore

The CastCore's flat-nose and hard, cast-lead design holds together while smashing through bone.




Velocity in feet per second
Muzzle 25 Y 50 Y 75 Y 100 Y
1160 1120 1085 1054 1026
Energy in Foot Pounds
Muzzle 25 Y 50 Y 75 Y 100 Y
747 696 653 616 585
Average Range
25 Y 50 Y 75 Y 100 Y
-0.8 -3.5 -8.1
Height of bullet trajectory in inches above or below line of sight if zeroed at 100 yards. Sights 1.5 inches above bore line.


Rated 5 out of 5 by from AWESOME LOAD! I can't say enough good things about this load. It is highly accurate in my Taurus® Mdl 425SS4 41 Magnum TRACKER®. This is the load I carry for Bear Defense whenever I am salmon fishing, or hiking in the forests of Washington state. We have a lot of Bears and I am very well defended with this accurate & powerful load. This is THE LOAD I recommend over all others for Bear Defense in the 41 Remington® Magnum!
Date published: 2015-05-18
Rated 5 out of 5 by from Best +.4 round I've had a S&W 657 for 25 years. I studied ballistic charts and chose it over .357 and .44 magnums for thick woods hunting in PA. The charts shown are right on the money, my 6 inch barreled .41 will hit a 100 yard target if given 8 inches of drop. Just wish someone would come back out with a .41 magnum long gun, like Marlin's 1894fg model.
Date published: 2014-05-17
Rated 5 out of 5 by from .41 Mag vs 351 pound hog After hitting a very large wild boar with a .444 I turned away and placed my rifle against a tree only to turn back and see the boar on its feet pawing at the ground. Not having enough time to reach for my rifle I drew my S&W mod 57 and took aim at the fast-coming hog striking it solidly center chest with three shots. I could have saved two shots as the first exploded the lungs killing the hog before it dropped. These are excellent 41 Mag loads that always perform as advertised. Hard cast rounds plow through bone and tissue like a freight train! PS My .444 round was a glancing shot that missed the vitals. Oh, the pig was very tasty.
Date published: 2014-05-16
Rated 5 out of 5 by from THE BEST Load for a 41 mag. w/ 8 + inches I own a S&W 41 mag. w/ a 8 3/8" barrel. With the 250gr. Cast Core round, I've found that it's the most accurate of ALL at 100yds. Dropped a nice 4x4 last season at 80yds. ..It was dropped in it's tracks. EXCELLENT Round! Thank You Federal for developing this for us 41mag. lovers.
Date published: 2013-05-13
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