Hornady A-Tip Match Custom Bullet Seating Stem 6.5mm
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bullet seating depth
Bullet seating depth feature revolutionary AMP (Advanced Manufacturing Process) bullet jackets. Developed by Hornady engineers, these bullet jackets are a technological advancement in design, tooling, and manufacturing that combine to produce the most consistently concentric bullet jackets available. These proven AMP jackets are the foundation for exceptional bullet accuracy and have virtually zero runouts and near-zero wall thickness variation. Coupled with precision swaged cores and manufactured to the tightest standards in the industry, all Hornady Match bullets provide superior consistency, high ballistic coefficients, and unprecedented levels of accuracy.
Bullet Seating Stem 6.5mm Specifications
- Model: Seating Stem
- Series: A-Tip
- Compatible With: Hornady Custom Grade DiesDetermining Bullet Seating DepthBefore experimenting with bullet seating depth, you need to determine the cartridge overall length (OAL), where a bullet’s ogive contacts the rifling. Several methods can be used to establish this OAL.One method is to make up a cartridge with a bullet seated obviously long in a sized case with no primer or powder. Fully chamber the dummy cartridge into your rifle, then extract it. Marks should be visible on the bullet where the rifling engraved it. If these marks are difficult to see, the bullet can be first coated with soot from the flame of a stick match or candle. Carefully insert the cartridge into the chamber if the bullet has a coat of soot, because any contact with the feeding ramp can leave false marks in the soot.With definite rifling marks on the bullet, turn in the seating stem on your seating die a quarter- to a half-turn to seat the bullet deeper. Keep chambering (and if need be, applying a new coat of soot) until there are ever so slight marks of the rifling on the bullet. Measure the cartridge length, and that OAL is where that bullet contacts the beginning of the rifling of that rifle.Another technique uses a fired case, cleaning rod with a flat tip and a fine tip marking pen. Take a fired case and ever so slightly bend the case mouth rim, just enough so a bullet slips in with a bit of a push. Make sure the fired primer is flush or below flush with the case head face, or an incorrect reading will occur when measuring final OAL. Slipa bullet in the case mouth and leave it protruding obviously long out of the case. Gently insert the cartridge into the chamber and close the bolt. The bullet will be resting up against the rifling. Slowly insert the cleaning rod into the muzzle until it contacts the bullet tip. Mark the rod at the muzzle. Remove the cartridge and then close the action. Push the rod into the bore until it contacts the bolt face and then mark the rod again. The distance between the two marks is the OAL where that bullet contacts the beginning of the rifling of that rifle.
|Condition||New in Box|
|Manufacturer Part Number||397138|
|Model||A-Tip Match Custom Bullet Seating Stem|