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Long Range Hunting & Shooting
Oh No!!! I ruined my barrel with a bronze brush!
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<blockquote data-quote="Raghole" data-source="post: 2426015" data-attributes="member: 122051"><p>You really blow this out of context. And the rest of the post that was posted with the picture for context:</p><p></p><p>"This is what happens <strong>when you use a brush with an abrasive cleaner</strong>! I've posted this picture several times and it never gets old as to what can happen!</p><p></p><p>This was a 7mm (284W) F class barrel. At 100 rounds accuracy started to suffer. The picture is at 800 rounds. The bore and groove should measure .277" x .284". It now measures .279" x .2855"! So basically polished a full .002" out of the bore and .0015" out of the grooves. The lands (the bore) sticks up so it will take the brunt of the damage from improper cleaning.</p><p></p><p>The gouges are from the bristles of the brush and the brush is trying to rotate with the twist of the rifling but there is no way every bristle is going to follow/stay in the grooves. So the bristles will ride up and over the top of the lands and down the trailing side of the land.</p><p></p><p>Later, Frank"</p></blockquote><p></p>
[QUOTE="Raghole, post: 2426015, member: 122051"] You really blow this out of context. And the rest of the post that was posted with the picture for context: "This is what happens [B]when you use a brush with an abrasive cleaner[/B]! I've posted this picture several times and it never gets old as to what can happen! This was a 7mm (284W) F class barrel. At 100 rounds accuracy started to suffer. The picture is at 800 rounds. The bore and groove should measure .277" x .284". It now measures .279" x .2855"! So basically polished a full .002" out of the bore and .0015" out of the grooves. The lands (the bore) sticks up so it will take the brunt of the damage from improper cleaning. The gouges are from the bristles of the brush and the brush is trying to rotate with the twist of the rifling but there is no way every bristle is going to follow/stay in the grooves. So the bristles will ride up and over the top of the lands and down the trailing side of the land. Later, Frank" [/QUOTE]
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Oh No!!! I ruined my barrel with a bronze brush!
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