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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Throat length, Pressure,& MV
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<blockquote data-quote="budlight" data-source="post: 35725" data-attributes="member: 2939"><p>wingman - I went through this years ago and ended up using a .300 inch throated barrel. Pressure signs went down chrono speeds stayed the same. My .277 win AI case uses a very compressed load. It takes a tall drop tube to get all the powder in the case nearly level to the top before seating the bullet.</p><p></p><p>I also went slower powder than R-22 to IMR 7828 and CCI250 primers.</p><p></p><p>A few years back I started moly coating all my bullets and they were just about across the board a 50 fps drop in speed and even less pressure.</p></blockquote><p></p>
[QUOTE="budlight, post: 35725, member: 2939"] wingman - I went through this years ago and ended up using a .300 inch throated barrel. Pressure signs went down chrono speeds stayed the same. My .277 win AI case uses a very compressed load. It takes a tall drop tube to get all the powder in the case nearly level to the top before seating the bullet. I also went slower powder than R-22 to IMR 7828 and CCI250 primers. A few years back I started moly coating all my bullets and they were just about across the board a 50 fps drop in speed and even less pressure. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Throat length, Pressure,& MV
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