WebDec 29, 2024 · Here is the formula: Pressure (psi) = (Bullet Diameter (in.)^2 x Bullet Weight (grains) x Velocity (ft/sec)) / (2 x 7000 x Pi) To calculate the pressure on a rifle bullet, you must first determine the diameter of the bullet in inches, the weight of the bullet in grains, and the velocity of the bullet in feet per second. WebJan 17, 2024 · When the ammo company tested those handloads, however, they averaged around 70,000 psi and a few hit 75,000 psi. That’s why factory ammo for the round averaged over 200 fps slower than its popular …
CUP vs PSI Ruger Forum
WebMar 9, 2024 · Bullet energy is 80 foot-pounds more at 100 yards. This chart shows the drop, drift, and energy on a 3-inch target for various loads of .22 LR and .22 WMR in a 10 mph crosswind from 50 to 150 yards. ... SAAMI maximum average pressure (MAP) levels for both the .22 LR and WMR are 24,000 psi. MAP for the .22-250 Remington is 65,000 psi. Here is … WebThe .50 caliber round is optimized for penetration at long ranges (about 875 yards, or 800 meters). For hard targets, .50 caliber penetration is affected by obliquity and range. The .50 caliber round can penetrate all of the commonly found urban barriers except a … optimus cybertronian mode
What Affects Rifle Chamber Pressure and Critical Factors You - RifleSh…
WebJan 4, 2011 · Then, the psi calculator accurately estimated the load's peak pressure. Advertisement. To estimate the load's velocity, the slide is adjusted so the .30-caliber hash mark on the lower scale is aligned with the barrel length to the base of the bullet (approximately 22 inches). The expansion ratio corresponding to a case capacity of 81.5 … WebDec 2, 2024 · As an interesting note, this particular GMX was designed for the European market. Specifically, as a matter of point-proving fact, for 6.5mm shooters hunting moose. Judicious 6.5x55 handloads push the 140-grain GMX to 2,800 fps. Muzzle energy is about 2,450 ft-lbs. Inside 300 yards, this bullet is spectacular. WebJun 1, 2024 · Bullet drop tends to range from 10 to 12” at 100 yards. That’s likely more distance than you’ll need for self-defense. 9mm loads frequently deliver a muzzle energy … portland state university linguistics