I believe they have a wider/rounder nose that catches the seater die sooner causing them to seat deeper into the case neck than any other bullet I've used. With the increased length of these bullets, case capacity can be compromised, so I like to look to the ball powders; and this is another reason I’ve relied on H335. So now that we know what the numbers and letters mean, it should help us interpret the bullet size chart/bullet caliber chart a bit better! To make the test even more interesting, four different types of .223 Rem/5.56 ammo were chron’d at each barrel length.

This energy has the advantage at longer distances and the .308 doesn’t drop as far as the .223 past 500 yards.

READ RifleShooter.com 5.56/.223 Barrel Cut-Down Test Article. I believe they have a wider/rounder nose that catches the seater die sooner causing them to seat deeper into the case neck than any other bullet I've used. I wanted to ask what is an average safe case length.

That makes a difference, particularly for varminters looking for a … Utilizing the data from the 16.5″ barrel, average velocity loss per inch of barrel length was 22.5 ft/sec for the UMC 223 55-grain cartridge, 25.7 ft/sec for the Federal M-193 cartridge, 30.3 ft/sec for the Winchester M855 cartridge, and 22.8 ft/sec for the Black Hills 68-grain heavy match cartridge. At each cut length, velocity was measured with a Magnetospeed chronograph. Rimless, Semi-Rimmed and Rimmed Bullets.

This reloading video covers how to measure for optimum bullet seating depth and where to start for load development. Each cartridge is loaded with either Hornady ® A-MAX ® bullets, our high-performance boattail hollow points, or the new, radically superior ELD ® Match bullets. First, I find the length where the bullet touches the lands, and make a “dummy” round with that specific bullet at that length. Additionally, this system lets you quickly and accurately fire round after round, which is ideal for tactical situations. Simply push the bullet into the case until the edge of the case neck is just to where the ink has been scraped off. (Light bullets gain more.) Bullet Options The .223 has a rather wide selection of bullets to choose from, so depending on your application, there will be a bullet for your needs. Exit wounds on medium game are often as wide as 3”. Bullet weights run between 30 and 90 grains, so there’s not only a bunch of flexibility here, but also …

This is correct in theory, however, modern ballist Conventional wisdom says slower twist rates wouldn't properly-stabilize a heavy bullet. 223 Remington Load Data; 5.56×45 NATO Load Data; 222 Remington Magnum Load Data; 22 PPC-USA Load Data; 225 Winchester Load Data; 22 BR Remington Load Data; 22-250 Remington Load Data; 22-250 Remington Ackley Improved Load Data; 220 Swift Load Data; 223 Win Super Short Magnum (WSSM) Load Data; 6mm PPC-USA Load Data; 6mm Creedmoor Load Data

In my chamber this ends up being an OAL of 2.553” using a Hornady 75 gr. I am using Remington 55gr FMJ w/ cannular, I am finding a variation in bullet length from .712 to .738.