NOSLER OCL

[rolly]

Iam just starting reloading:

bullets: 155 gr, custom competition HPDT for .308W

I bought the Nosler book to get data.

Now when i try to find the size of the cartridge with the bullet, I ONLY find the "Maximum S.A.A.M.I OVERALL CARTRIDGE LENGTH" which is 2.810" and is given by nosler as the reference for .308w.

Now Iam pretty sure that all bullets have different shapes and sizes and that my bullet is shorter than CT Ballistic silvertip or else...

The data I get from the book specific to my bullet are: ballistic coefficient .450 and sectional density .233. I also get the data for the different type of powder (type, charge, muzzle velocity, load density)


I cannot find the lenght of cartridge specific to my bullet!!!!


I NEED HELP !!!!!!!!!!!!!!!

[ar15barrels]

The maximum length depends on the length of the inside of your rifle's magazine.
Generally, load to 2.8" and call it good.
If you have AICS mags, you can seat out longer.

I shoot 155 Matchkings at 2.8" OAL.
The noslers are copies of the matchkings.

[rolly]

The maximum length depends on the length of the inside of your rifle's magazine.
Generally, load to 2.8" and call it good.
If you have AICS mags, you can seat out longer.

I shoot 155 Matchkings at 2.8" OAL.
The noslers are copies of the matchkings.

The problem is that 2.8 seems long ...but i will give it a try
what about pressure? what happen if insert too much of the bullet in the brass (making a short cartridge)? is there a MINIMUM length of cartrige?


note: i have remington 700 , and i do not use any magazine (yet)

[ar15barrels]

The problem is that 2.8 seems long ...but i will give it a try
what about pressure? what happen if insert too much of the bullet in the brass (making a short cartridge)? is there a MINIMUM length of cartrige?


note: i have remington 700 , and i do not use any magazine (yet)

2.8" is NOT long for 308 unless you are shooting extremely short bullets like the speer 100gr plinkers or 110gr bullets designed for the M1 Carbine.

Pressure increases as you seat the bullet deeper.

I would consider the minimum length to be the point where the shank of the bullet is no longer showing outside the case.
Look at a bullet for a moment.
The shank is the portion measuring -.308" in diameter.
As you move toward the tip, the tapering portion is the ogive.
You want to have just a little bit of the shank outside the case.
If you start seating so deep that the ogive goes into the case mouth, you are reducing the case's ability to hold the bullet.
You are also reducing "bullet pull" which is the pressure required to get the bullet moving.
If you run the bullet pull pressure down too low, the powder does not burn as consistently.

[rolly]

2.8" is NOT long for 308 unless you are shooting extremely short bullets like the speer 100gr plinkers or 110gr bullets designed for the M1 Carbine.

Pressure increases as you seat the bullet deeper.

I would consider the minimum length to be the point where the shank of the bullet is no longer showing outside the case.
Look at a bullet for a moment.
The shank is the portion measuring -.308" in diameter.
As you move toward the tip, the tapering portion is the ogive.
You want to have just a little bit of the shank outside the case.
If you start seating so deep that the ogive goes into the case mouth, you are reducing the case's ability to hold the bullet.
You are also reducing "bullet pull" which is the pressure required to get the bullet moving.
If you run the bullet pull pressure down too low, the powder does not burn as consistently.

great !!! thank you