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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Loose bore = Less Velocity?
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<blockquote data-quote="WiscGunner" data-source="post: 2880973" data-attributes="member: 97288"><p>First off, in my experience you are leaving velocity on the table. 22" barrel compared to user supplied data on Sherman site with a 24" barrel will obviously be slower. Also in my experience fouled barrels are faster than clean to steel barrels. At least in the cartridges I have experience with the barrels speed up after 100-200rounds and when I eventually have to strip the barrel back to steel it will need some fouling again to speed back up. </p><p></p><p>Are you loading to "length advertised" like a shot in the dark or are you loading to your rifle specs. Maybe I have interpreted this incorrectly from your text but other peoples load data is irrelevant to me for the most parts. Loading "factory" ammo and expecting"custom" results is not a recipe for success. </p><p></p><p>Are you doing velocity/pressure testing with virgin brass or brass fired to your chamber? Loose brass can show fake/early pressure signs from being slammed back into the bolt face. </p><p></p><p>Have you measured your Base to Ogive in the actual chamber of your rifle? If so, based on that measurement, what amount of jump are you loading/trying? </p><p></p><p></p><p>Not available anymore? Bullet or powder? </p><p></p><p></p><p>Forgive me if I have read your posts incorrectly, just seems to me the basic are being skipped to jump to some random numbers others have published.</p></blockquote><p></p>
[QUOTE="WiscGunner, post: 2880973, member: 97288"] First off, in my experience you are leaving velocity on the table. 22” barrel compared to user supplied data on Sherman site with a 24” barrel will obviously be slower. Also in my experience fouled barrels are faster than clean to steel barrels. At least in the cartridges I have experience with the barrels speed up after 100-200rounds and when I eventually have to strip the barrel back to steel it will need some fouling again to speed back up. Are you loading to “length advertised” like a shot in the dark or are you loading to your rifle specs. Maybe I have interpreted this incorrectly from your text but other peoples load data is irrelevant to me for the most parts. Loading “factory” ammo and expecting”custom” results is not a recipe for success. Are you doing velocity/pressure testing with virgin brass or brass fired to your chamber? Loose brass can show fake/early pressure signs from being slammed back into the bolt face. Have you measured your Base to Ogive in the actual chamber of your rifle? If so, based on that measurement, what amount of jump are you loading/trying? Not available anymore? Bullet or powder? Forgive me if I have read your posts incorrectly, just seems to me the basic are being skipped to jump to some random numbers others have published. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Loose bore = Less Velocity?
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