Is this throat erosion?

T

tinker

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I hope this pic works.
103-1.jpg

The pic should show a bullet that was seated shallow then chambered, hoping to see the land marks, however there are no rifling marks only uniform scratches all the way around the bullet.No lands at all.
Is my throat eroded? Rifle is a rebarreled #4 Enfeild in 220\303.
Thanks
Frank
 
Last edited by a moderator:
No, thats marks from the freebore. Quick description, the freebore is part of the chamber and is after the neck and before the lands.
 
throat

Thanks guys,
I loaded a long 70 gr bullet that was definatly pushed back into the case when I chambered it. Could it have a tight freebore that is grabbing the bullet before it hits the lands?
Looking at the bullet more closely I can see a gap in the scratches about 3mm wide. Could the bullet be canted in the chamber causing it to bind?
Any ideas?
Frank
 
Yes and yes.

If you crimp that bullet hard seated long then retry to chamber it you will find your land marks. Take some fine steel wool and polish the bullet up first.

Cheers
 
when was the last time you cleaned the chamber

as ive seen similar marks on a bullet that was chambered and removed out a 308
the chamber was rusty from shooting old army ammo and not cleaning it properly

easy way to tell if its rust is brush the chamber and clean with patch if orange / brown comes out its rust and will need polished clean (some times if not to bad u can do it with lots of cleaning)
 
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