What thread is Hornady OAL gauge?
The Hornady OAL gauge tool uses 5/16″ x 36 TPI threading. You can find these taps on Amazon, like this one: For drills, I use a small drill to get the primer drilled out and the hole started. Any drill around 3/16″ should work.
What are Hornady modified case used for?
Hornady Lock-n-Load Modified Cases are specially modified to work with Lock-N-Load Precision gauges. A special fine thread is used on this Hornady reloading tool to attach it to the gauge, ensuring that it remains perfectly square for precise alignment in the chamber of your firearm.
What is the best bullet seating depth?
Many times the best seating depth is with the bullet touching or very near the rifling. However in some rifles, the best seating depth might be 0.100” or more off the rifling. This is simply a variable the handloader uses to tune the precision of a rifle.
What is OAL in reloading?
The overall length (OAL) of an ammunition cartridge is a measurement from the base of the brass shell casing to the tip of the bullet, seated into the brass casing. Cartridge overall length, or “COL”, is important to safe functioning of reloads in firearms.
What is a bullet comparator?
Gauge, the Bullet Comparator provides the ultimate in precision measurement. The Bullet Comparator will properly align the O.A.L. Gauge for precise measurement using a caliper. This method allows direct comparison of your loads as you set up your bullet seating die for any selected bullet free-travel (jump).
What does a bullet comparator do?
What is bullet coal?
COAL (cartridge over-all length) is the measurement of the cartridge from the tip of the bullet to the base of the cartridge. The cartridge over-all length is an important dimension to understand, especially if functioning hand loaded ammunition through a firearm magazine.
Should the bullet touch the lands?
DO NOT seat hunting bullets touching the lands. Back them off lands sufficiently (at least . 015 inch) to be completely safe, yet close enough to get maximum accuracy. Harder bullets like Barnes X, Nosler E-Tip and Hornady GMX without soft lead cores are usually more accurate when started .
Is OAL a maximum or minimum?
The maximum oal is usually determined by the magazine box of your rifle. As long as the loaded round fits then it is OK to use. In a couple of my Weatherby rifles I load the bullet out as far as I can and I usually get the best accuracy this way, but I do have one a .
What is the purpose of a Cannelure on a bullet?
Function. In the Minié ball the purpose of the cannelure is to hold a lubricant. Cannelures for this purpose are commonly called “grease grooves” or “lubrication (lube) grooves” or just “grooves” by bullet casters (see the glossary of firearms technical terminology maintained by SAAMI).
What does the Hornady bullet comparator do?
The bullet comparator is awesome for measuring COL on rifle reloads. It measures the Ogive rather than the bulelt tips which can vary from projectile to projectile. The Ogive is more consistent point of measurement.
Does COAL affect velocity?
Summary of COAL discussion – Seating a long bullet to the restrictive SAAMI COAL can severely decrease the internal volume of the cartridge which will limit the max velocity the cartridge can achieve.
What does ogive mean in reloading?
But what is an ogive profile? Simply defined, it’s the curved portion of a bullet forward of the bearing surface. Because a flat cylinder is undesirable for exterior ballistic reasons, rifle bullets have on of three ogives or “point profiles”: flat nose (FN), round nose (RN) or pointed (spitzer).
What does minimum OAL mean?
As I understand, the minimum OAL is basically where the bullet is seated far enough off the lands that the bullet has a jump and then can cause a pressure spike when it hits the lands.
What is the minimum overall length for 300 blackout?
. 300 AAC Blackout
| 7.62×35mm/300 AAC Blackout | |
|---|---|
| Base diameter | 0.376 in (9.6 mm) |
| Rim diameter | 0.378 in (9.6 mm) |
| Case length | 1.368 in (34.7 mm) |
| Overall length | 2.26 in (57 mm) |