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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
How to know when to change barrels?
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<blockquote data-quote="Mateo" data-source="post: 1090350" data-attributes="member: 77067"><p>I was just discussing this with someone. What we decided was velocity takes a hit first. It will start to drop off as the bullet can't get as good a seal with all the fire cracking and burnt out rifling in the first little bit of the barrel. Some barrels can still shoot accurately if wear is even and the bullet isn't so sensitive to seating depth changes. But eventually even accuracy will start to drop off fast. If you aren't recording velocity , getting it bore scoped will tell you how far gone it really is in terms of fire cracking and rifling wear at the throat. </p><p> I had an old .270 win R700 that had a badly worn out barrel and it would sometimes shoot decent groups on paper in warm weather, but when cold weather hit it was all over the place. This was a mild load but a depth sensitive bullet.</p></blockquote><p></p>
[QUOTE="Mateo, post: 1090350, member: 77067"] I was just discussing this with someone. What we decided was velocity takes a hit first. It will start to drop off as the bullet can't get as good a seal with all the fire cracking and burnt out rifling in the first little bit of the barrel. Some barrels can still shoot accurately if wear is even and the bullet isn't so sensitive to seating depth changes. But eventually even accuracy will start to drop off fast. If you aren't recording velocity , getting it bore scoped will tell you how far gone it really is in terms of fire cracking and rifling wear at the throat. I had an old .270 win R700 that had a badly worn out barrel and it would sometimes shoot decent groups on paper in warm weather, but when cold weather hit it was all over the place. This was a mild load but a depth sensitive bullet. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
How to know when to change barrels?
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