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Borecope Techniques and Interpretation
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<blockquote data-quote="baldhunter" data-source="post: 3083220" data-attributes="member: 11853"><p>I've had a Teslong flexible model for about three years now.Can you predict how well the barrel will shoot?Not really,but it lets you see things you could never see before.I did rebarrel one rifle that was a poor shooter after the Teslong showed me bad problems with an a used near mint condition older Tang Safety Ruger 77 with one of the Wilson barrels that are know to have problems during that era of production.The metal the barrel was made of was bad.There was voids throughout the barrel and some really deep small voids in the chamber.It had one bad spot about an inch past where the bullet touches the lands.That spot was all the way around the barrel,about an inch long,so the bullet jacket was being destroyed from the start down the barrel.That rifle wouldn't shoot better than 2-3" groups.I tried to get it to shoot better,it just wouldn't.Rather than wasting a lot of time and and money,I had it rebarreled and it shoots very well now.It's also a great tool to check for erosion,how clean the barrel is,how much room a chambered case has before it reaches the end of the chamber and carbon build up and more.I know I use mine more than I originally thought I would.I recently bought one of the new Remarms Remington 700 Long Range 300 Win Mags with 5R rifling.I inspected the barrel and it looked quite good throughout the barrel.One thing I noticed there was zero copper from test loads that are usually shot at the factory.I don't know maybe they don't do that anymore,but anyway,the barrel was really clean inside.I finally had a chance to take it to the range yesterday.I only fired a small sample of twelve rounds with two different bullets and loads.I shot the first four rounds to get it on paper where I could see how it was going to group.After each shot,I ran a wet patch with Sta-Bil CPL,followed by two dry patches.The rifle grouped well for with the small sample I ran through it.I was impressed to see no copper after scoping it when I got home.Another thing I just added was the Teslong mirror set.The mirrors are bigger than the ones that it came with.It helps to keep things centered,making it easier to adjust focusing.Here's some pics.</p><p>Ruger Barrel Issues</p><p><a href="https://postimages.org/" target="_blank">[ATTACH=full]563295[/ATTACH]</a></p><p><a href="https://postimages.org/" target="_blank"></a></p><p><a href="https://postimages.org/" target="_blank">[ATTACH=full]563296[/ATTACH]</a></p><p></p><p>Full length case chambered in a rifle.</p><p>[ATTACH=full]563297[/ATTACH]</p><p></p><p>New Remarms Long Range 300 Win Mag Before Shooting</p><p><a href="https://postimages.org/" target="_blank">[ATTACH=full]563298[/ATTACH]</a></p><p><a href="https://postimages.org/" target="_blank"></a></p><p><a href="https://postimages.org/" target="_blank">[ATTACH=full]563299[/ATTACH]</a></p><p><a href="https://postimages.org/" target="_blank"></a></p><p><a href="https://postimages.org/" target="_blank">[ATTACH=full]563300[/ATTACH]</a></p><p></p><p>Remarms Long Range after 12 rounds</p><p></p><p><a href="https://postimages.org/" target="_blank">[ATTACH=full]563301[/ATTACH]</a></p><p><a href="https://postimages.org/" target="_blank"></a></p><p><a href="https://postimages.org/" target="_blank">[ATTACH=full]563302[/ATTACH]</a></p><p></p><p>Nine of the first twelve round shot in the rifle with two different loads and bullet weights</p><p></p><p>[ATTACH=full]563303[/ATTACH]</p><p></p><p>Sta-Bil CLP</p><p>[ATTACH=full]563304[/ATTACH]</p></blockquote><p></p>
[QUOTE="baldhunter, post: 3083220, member: 11853"] I've had a Teslong flexible model for about three years now.Can you predict how well the barrel will shoot?Not really,but it lets you see things you could never see before.I did rebarrel one rifle that was a poor shooter after the Teslong showed me bad problems with an a used near mint condition older Tang Safety Ruger 77 with one of the Wilson barrels that are know to have problems during that era of production.The metal the barrel was made of was bad.There was voids throughout the barrel and some really deep small voids in the chamber.It had one bad spot about an inch past where the bullet touches the lands.That spot was all the way around the barrel,about an inch long,so the bullet jacket was being destroyed from the start down the barrel.That rifle wouldn't shoot better than 2-3" groups.I tried to get it to shoot better,it just wouldn't.Rather than wasting a lot of time and and money,I had it rebarreled and it shoots very well now.It's also a great tool to check for erosion,how clean the barrel is,how much room a chambered case has before it reaches the end of the chamber and carbon build up and more.I know I use mine more than I originally thought I would.I recently bought one of the new Remarms Remington 700 Long Range 300 Win Mags with 5R rifling.I inspected the barrel and it looked quite good throughout the barrel.One thing I noticed there was zero copper from test loads that are usually shot at the factory.I don't know maybe they don't do that anymore,but anyway,the barrel was really clean inside.I finally had a chance to take it to the range yesterday.I only fired a small sample of twelve rounds with two different bullets and loads.I shot the first four rounds to get it on paper where I could see how it was going to group.After each shot,I ran a wet patch with Sta-Bil CPL,followed by two dry patches.The rifle grouped well for with the small sample I ran through it.I was impressed to see no copper after scoping it when I got home.Another thing I just added was the Teslong mirror set.The mirrors are bigger than the ones that it came with.It helps to keep things centered,making it easier to adjust focusing.Here's some pics. Ruger Barrel Issues [url=https://postimages.org/][ATTACH=full]563295[/ATTACH] [ATTACH=full]563296[/ATTACH][/url] Full length case chambered in a rifle. [ATTACH=full]563297[/ATTACH] New Remarms Long Range 300 Win Mag Before Shooting [url=https://postimages.org/][ATTACH=full]563298[/ATTACH] [ATTACH=full]563299[/ATTACH] [ATTACH=full]563300[/ATTACH][/url] Remarms Long Range after 12 rounds [url=https://postimages.org/][ATTACH=full]563301[/ATTACH] [ATTACH=full]563302[/ATTACH][/url] Nine of the first twelve round shot in the rifle with two different loads and bullet weights [ATTACH=full]563303[/ATTACH] Sta-Bil CLP [ATTACH=full]563304[/ATTACH] [/QUOTE]
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