"Sudden Impact"

We read alot of numbers. What do they really mean in field results? Take a look.

That's a .177 pellet in the center (yeah - you missed it didn't you?) Now, that slug at 10 o'clock is a 282 grain slug (cold swagged from a .535 round ball - shown at 8 o'clock. My biggest slugs are currently 650 grains - yes, more than twice that big.


As round ball go faster and faster, more of them is fragmented off upon striking a steel plate. These were tests with recovered .375 round ball from a "High Plains Carbine".

By the time round ball reach 700 fps, there is nothing left but lead flakes. The 80 grain .375 round ball @ 700 fps produces 87 ft. lbs. of muzzle energy.


Dramatic evidence of penetration. The panels you see are dense 1/4" plywood. The round ball has penetrated 8 panels (3/4" separator strips top and bottom provides a uniform test frame).

This was approximately 90 ft. lbs. of muzzle energy.

Test shot at about 10 feet.


The test panel is a solid pine board 3/4" thick.

The holes are 45 caliber round ball at 110 ft. lbs. from a Barnes Cane pcp.

Test shot at about 10 feet.


Digging spent slugs out of the dirt berm for study.

The 56 caliber Bison drives it's 300 grain slug about 14" into the dirt berm @ 50 yards.

The 500 grain slugs will penetrate the 1" backer @ 100 yards and still penetrate the dirt berm to approx. one foot depth.

Serious energy requiring responsible conduct at all times.



Here's a great example of the "Shock Valve" in a high energy round. The 2 by 4 block of wood is pressure treated framing lumber. It's hard as bone - you know the stuff. Yet; it doesn't weigh very much. You could knock the block over with the flick of your finger.

In order to "paper punch" that loose block of wood, before it can move, takes a tremendous "shock" of energy. I shot this loose block with a 45 Caliber "Nebula Class" pcp rifle and a "Raptor Slug" @ 50 yards.

The rifle was shooting the slug @ 275 ft. lbs.