Nosler shows us how finding the lands when reloading is actually a pretty simple job.
Our pals over at Nosler are doing their part to educate the DIY crew of American sportsmen, specifically those who are into reloading ammo.
Reloading is becoming more and more popular, what with the so-called shortage we’ve recently seen, along with the cost-saving abilities the practice can award.
See a more basic reloading guide on Nosler’s Facebook page. And when you’re in need of distinguishing the lands, otherwise known as jam length or maximum overall seating depth, these tips will help.
NOTE: “Nosler recommends a minimum of .020” of bullet jump to the lands for lead core bullets and .050” for the E-Tip line. Shooting a round at the jam length can provide a dangerous spike in pressure and detract from accuracy of Nosler bullets.”
View the slideshow to get started finding the lands.
STEP 1: GATHER YOUR COMPONENTS
To get started on finding your lands, otherwise known as jam length or maximum overall seating depth, all you’ll need is a fired case out of that rifle, your bullet of choice and a black marker.
STEP 2: COLOR THE BULLET
Color the entire bullet with your black marker. This will later help you detect markings created from the lands and/or slippage in the case.
STEP 3: DENT THE CASE MOUTH
Slightly dent the case mouth using the ram of your press or manually with your thumb on the edge of a table. Denting the case mouth creates the tension you’ll need to hold the bullet in place.
STEP 4: INSERT BULLET
Push the bullet into the case mouth. You should be able to do this with your hands. Pushing it too deep may make it difficult to reach the lands, so make sure to push it just barely until it stays put.
STEP 5: INSERT INTO CHAMBER
Place the dummy round into the chamber.
STEP 6: CLOSE BOLT
Insert and close your bolt. You should feel it pushing your case forward. DO NOT dry fire the rifle.
STEP 7: EXTRACT DUMMY ROUND
Open bolt and extract the dummy round.
STEP 8: LOOK FOR LINE
Look for a faint line on the marked bullet to verify that you’ve hit the lands near the ogive and inspect that the bullet didn’t slip back out of the case when being extracted from the lands.
STEP 9: MEASURE OVERALL LENGTH
Measure your overall length using one of two methods. The first method is measuring overall length from the base of the cartridge to the nose of the bullet. This method will only give you the jam length for the specific bullet you used. Jam length is the seating depth at which that bullet will engage your rifling.
STEP 9 (continued):
The second method is to measure overall length using a nut or comparator, which will compare ogive jump. This method will provide you with the jam length for any bullet.