Seating into the lands and amount of bullet in case question?

M

matchman

New member
I purchased a reamer with .035 freeboar (6ppc) with the understanding that it is a good choice for Barts 68gr BT in particular and it being a overall flexible dimension for other bullet makers.
The Question is with the bullet touching the lands I have about .180 into the neck to hold it. Is this ok typical ? It dos not seam to bad with flat base bullets but with a Bart BT its really only held by .100 in the neck (due to the Boat tail taper) Is what im seeing correct and ok or is something wrong ?
Thanks for any help.
Adam
 
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matchman said:
I purchased a reamer with .035 freeboar (6ppc) with the understanding that it is a good choice for Barts 68gr BT in particular and it being a overall flexible dimension for other bullet makers.
The Question is with the bullet touching the lands I have about .180 into the neck to hold it. Is this ok typical ? It dos not seam to bad with flat base bullets but with a Bart BT its really only held by .100 in the neck (due to the Boat tail taper) Is what im seeing correct and ok or is something wrong ?
Thanks for any help.
Adam
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You can have the reamer re-ground to take the freebore out or lestened , you can find your tune by jumping your bullets, that is, moving the bullet back into the case until it shoots; suppose to work the same as going into the lands plus you won't ever stick the bullet of a loaded round in the lands.
 
matchman said:
I purchased a reamer with .035 freeboar (6ppc) with the understanding that it is a good choice for Barts 68gr BT in particular and it being a overall flexible dimension for other bullet makers.
The Question is with the bullet touching the lands I have about .180 into the neck to hold it. Is this ok typical ? It dos not seam to bad with flat base bullets but with a Bart BT its really only held by .100 in the neck (due to the Boat tail taper) Is what im seeing correct and ok or is something wrong ?
Thanks for any help.
Adam
Click to expand...

IMO it doesn't really matter as long as you can hold a bullet.

.100 is plenty.

Longer freebore gives you larger usable case capacity.

al
 
matchman said:
I purchased a reamer with .035 freeboar (6ppc) with the understanding that it is a good choice for Barts 68gr BT in particular and it being a overall flexible dimension for other bullet makers.
The Question is with the bullet touching the lands I have about .180 into the neck to hold it. Is this ok typical ? It dos not seam to bad with flat base bullets but with a Bart BT its really only held by .100 in the neck (due to the Boat tail taper) Is what im seeing correct and ok or is something wrong ?
Thanks for any help.
Adam
Click to expand...
If you want to know the best freebore for the Barts 68BT, ask Bart. He will know for sure. 0.035 is a little short for bullets that have a 7-8 ogive nose. Most for the 7-8 nose use about 0.060-0.080".

Some of the newer double ogive bullets seem to want a freebore close to zero. You do not want a lot of bullet down in the neck as you would in a hunting loading.

There is a chart somewhere on this computer that I scavenged somewhere. If I can find it I will post it. That will really confuse you.
 
Barts

I have switched back to a .035 with the Barts on the .790 jackets, and they look just right in the neck..........jackie
 
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