![]() I fully realize one just needs to just “shoot” and see, et alia and per YOUR weapon, etc. 324 Cast Bullets (teflon coated too) seem readily available as of “today” (since 8mm Mauser used, I read). 324 digital caliper (you have to make sure your “touch” is “plumb” to the bullet, so to speak). The PPU Bullet in “todays”, as of this msg are. However, having read for 8+ hours see the Bullet diameter per the drawings and if/not using Cast Bullets (to boot), is/is not. ![]() I realize I can, and will deconstruct the Privi Partizan rounds offered. I just considered my Dad’s 8mm x 51R Lebel, Berthier Carbine for (shooting) then, reloading. If it’s an implied analogy, I sort of get it, but not clear, – if you don’t mind. Hello, the bottom of the bottom chart, – the “PRC” is just a reference, or the table collapsed, format? I’m confused, – but, too, realize that there does not horizontally line up with any above. Safe incremental load development is the key. In practice, this is no different than the. In such instances, the hand loader may have no choice but to utilize. 308 projectiles are used, neck tension of re-sized cases is normally quite poor due to case necks being sized down to suit wider projectiles. 308” bores, while typical 7.62×39 projectiles are of a wider diameter. The common question when reloading for Ruger rifles, is which bullet diameter to use. Average velocities with hand loads are 2350 to 2400fps with 125gr bullets and 2000 to 2150fps with 150gr bullets, the former giving similar power to factory loads. However it is possible to utilize 150 grain bullets (.311 /.312’) designed for the. 311”, with common bullet weights running between 123 and 125 grains. Nevertheless, there are a number of hunters using bolt action 7.62×39 rifles with hand loaded components.įast burning powders such as IMR4198 and H4198 (ADI 2207) through to IMR 3031 and H4895 (ADI 2206H) give best results. Hand loading does little to improve the velocity and killing power of the M43 round and most hunters using semi-automatic military style rifles do not reload simply because of the difficulty in recovering ejected brass. 308 / 7.81? or does it matter since we are only talking about a mere maximum average pressure limits currently established at 45,000 psi. Just wondering? Have I missed buying the wrong bullets or is there a difference in the depth of lands and grooves in the rifling from the Russian/Chinese barrels? If so what difference is the American made barrel going to be? will it be a true. 308 win at 7.81 mm why am I buying the advertised bullet diameter as. If I reload 7.62×39 cartridge and the bullet diameter is listed the same as the. ![]() List of Rifle Cartridges and Their Bullet Diameters in Inches and MM Common Handgun Calibers Converted to MM and Inches Handgun Cartridgeįortunately, understanding the conversions between metric and imperial for handgun calibers is quite a bit easier because there are far fewer common pistol cartridges than there are rifle cartridges.įor the most part, handgun calibers are either 9, 10, 11, or 12mm. 30 caliber cartridge, which isn’t actually correct at all.Īs you can see, the naming conventions of cartridges is complicated because ammo manufacturers like using clean, even numbers and to ignore the actual measurements.īecause the table above has to make some generalizations about particular cartridges, I’ve included the table below which lists each rifle cartridge separately so you can see the specific bullet diameter in inches and its exact metric conversion. The difference is that one measurement is the distance between the grooves (the cut out portions of the rifling in the barrel, and another measurement uses the measurement to the lands (the raised portion of the rifling). Converted to metric, that’s 7.82mm, but most people would refer to it as a 7.62 because of its military distinction. 308 Winchester is so named because the bullet is. That’s because the naming conventions for many of the most popular cartridges bend the rules of measuring in order to come up with a nice sounding name.įor example, the good old. ![]() There are some things in that table that just don’t seem right. If you’re like me, looking at the table above starts to make your head spin. Rifle Cartridge Caliber to Metric Conversion Table Rifle Caliber Name The manufacturers of ammunition have done us no favors in making this easy to understand, but I’ve put together this handy resource so you can quickly see the equivalent naming conventions between mm and inches (caliber). This page will explain the problem as clearly as possible. Many shooters are confused because there are two different systems for measuring the bore diameter for a cartridge: (1) the caliber system measuring the diameter of the bore of the barrel in inches, and (2) the same measurement, but in millimeters. ![]()
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