Ultimately, less speed creates less resistance, creates more penetration. Very interestingly, if one takes the Hornady grain. Switch to Hybrid Mode. A long steady push results in a greater distance of travel, a quick thrust results in yaw. However, anyone who takes the time to run comparative penetration tests will find that those of us who pack a good with heavy bullets need not take a back seat to any other caliber, especially when the game is heavy and the penetration requirements are great. For those that don't know the man behind theses tests is John Linebaugh who makes custom revolvers.
While the penetration depths are by no means disappointing, it would seem that the heavy jackets resulted in large expanded diameters that retarded their forward progress more than similar weight bullets at similar inpact velocities in. Their primary advantage is reliable and deep penetration and they are best employed in situations in which the bullet must penetrate heavy bone structures or through great depth of hard muscle and non-vital organs in order to reach the vitals. Analytical Modeling of Terminal Ballistics Return to: I am surprised that the grain X-Bullet lost its petals at the relatively low velocity of fps, but its cavity is gaping and so the walls are unusually thin. Thursday 9 am - 7 pm. Consequently, we see a clear design choice for the premium and custom bullets:
In parting, its interesting to note that ancient loads for what were once thought to be small-bore rifles can deliver excellent penetration while producing a respectable wound cavity. I shot a stout and somewhat rotten hardwood stump with my Contender using gr Speer soft points fps and some gr Lee FN hardcast "solids" fps with a rather small meplat. Observe that the gr Barnes Original bullet fired from a. Cast bullets with hardness and alloy carefully tailored to the load can produce very effective penetration and cavitation when launched with muzzle velocities of fps and less.
Description: The long Speer 70 grain semi-spitzer is, despite its mass, apparently no better a performer than a typical 55 to 62 grain soft point see the table below. Other tests with the grain showed results that rivaled WFN hard cast bullets with slightly better wound channel size. The smaller diameter portion of the lesion corresponds to a typical penetration after velocity attenuation and represents the depth of penetration that would be minimally lethal at that diameter. Small-Bore Bullets I don't have a large store of test data for small-bore calibers.