Recent content by Bart B

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    anyone used 7.62 Mil Primers in bolt action guns?

    USA military rifle ammo made in arsenals has been tested in barrels with Remington 700, Winchester 70 and 1903 Springfield actions. Firing pin spring ratings are listed in: https://www.gunsprings.com/
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    anyone used 7.62 Mil Primers in bolt action guns?

    How do you know if the spring is in good shape...... er..... is strong enough? Most bolt action firing pin springs are rated 25 to 30 pounds cocked.
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    anyone used 7.62 Mil Primers in bolt action guns?

    Hundreds of people have used military ammo in bolt action rifles. Military and civilian. All without any problems. Note the barrels used to test military rifle ammo are fit to bolt actions.
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    Balance scale giving incorrect weights

    People have used a coin for decades. Its weight will be exactly the same every time if the scale is repeatable. That's all that matters. Doesn't matter if it's a tenth grain off exact.
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    Do you sort by case weight? Loading To Scale

    A national highpower champion tested forty Lapua D46 30 caliber Full Metal Jacket Rebated Base 185 grain match bullets at 600 yards in a Hart barreled Winchester 70 in 308 Win. Fired about 10 seconds apart, the group size extreme spread was 1.92 inch.
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    Do you sort by case weight? Loading To Scale

    If your barrel's properly stress relieved and fit to the receiver correctly, you can shoot once every 5 seconds putting 10 shots inside one third MOA with top quality stuff. My results across all cases were statistically insignificant
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    Do you sort by case weight? Loading To Scale

    I tried that but never got those results. Each case had about the same spread and average velocity.
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    Parallax vs Focus

    If a fixed power scope needs to be focused at the target range, it'll need an adjustable objective lens system (often misnamed parallax adjustment) to do that. Metallic sights can have parallax regardless of where the aiming eye is focused.
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    Parallax vs Focus

    Technically speaking, no adjustment on the scope adjusts parallax. One of them adjusts focus. Exactly like spotting scopes, binoculars, camera lenses and magnifying glasses. If the aiming eye is on the scope optical axis, there's never any parallax regardless of what range the scope's focused...
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    Parallax vs Focus

    No. Focus the scope at 75 yards and it'll be good enough for 25 to 150.
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    Parallax vs Focus

    The closer the target is, the more critical focusing the scope on target is. If target is 400 yards away and the scope is focused at 200, the parallax error is negligible If your eye is on the scope's optical axis, there's no parallax regardless of the range the scope's focused at...
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    Dead on at 100yds 4inches right at 400yds

    You held the rifle different. The barrel doesn't point to a place above point of aim equal to bullet drop plus sight height above the bore until the bullet leaves the barrel. It points somewhere else when the primer fires. During the time the bullet goes down the barrel, the bore angle at the...
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    What am I doing wrong with sizing brass?

    I suggest you use a black Magic Marker coating all of a cartridge, let it dry then chamber it closing the bolt. Eject the cartridge then see where the dye got rubbed or scraped off. Those places show where the cartridge is too big for the chamber
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