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Rifles, Reloading, Optics, Equipment
Reloading
.300 win mag oal question
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<blockquote data-quote="baldhunter" data-source="post: 939782" data-attributes="member: 11853"><p>It's really going to depend on your rifle.Every rifle is different.I have a Rem 700 that has a long throat and the mag box is around 3.6".My CZ 550 has a long throat and a mag box about 3.5".They both shoot best with ammo loaded @ 3.45-3.5".The books usually show 3.340",but my rifles never shot good at that length.Remember,pressure can build once you get real close or into the lands,so watch out for that.I like to stay at least .020-.030 off the lands to keep that from happening.I also prefer to use a Hornady bullet comparator to measure my cartridge length instead of measuring off the bullet tips which often vary.It measures off the ogive of the bullet.That is the part of the bullet that comes in contact with the lands first.I find my ammo has a very consistent length using the comparator and that is important when measuring bullet distance from the lands and setting up your seating dies for a specific seating depth.</p></blockquote><p></p>
[QUOTE="baldhunter, post: 939782, member: 11853"] It's really going to depend on your rifle.Every rifle is different.I have a Rem 700 that has a long throat and the mag box is around 3.6".My CZ 550 has a long throat and a mag box about 3.5".They both shoot best with ammo loaded @ 3.45-3.5".The books usually show 3.340",but my rifles never shot good at that length.Remember,pressure can build once you get real close or into the lands,so watch out for that.I like to stay at least .020-.030 off the lands to keep that from happening.I also prefer to use a Hornady bullet comparator to measure my cartridge length instead of measuring off the bullet tips which often vary.It measures off the ogive of the bullet.That is the part of the bullet that comes in contact with the lands first.I find my ammo has a very consistent length using the comparator and that is important when measuring bullet distance from the lands and setting up your seating dies for a specific seating depth. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
.300 win mag oal question
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