Never used a chronograph to develop any loads. The only way they show precise and useful data for velocity data is when the barreled action in clamped in a fixed mount. Free recoiling rifles are almost as good and shouldered rifles are even less precise as their recoil subtracts their velocity from that of the bullet.
Loaded ammo for two 22 caliber, one 24 caliber, two 26 caliber, one 27, two 28, four 30, one 31, two 32 and one 35 caliber rifle. Very good accuracy with all. Only worked up loads for one 26 caliber and one 30 caliber for a new bullet no data existed for. All without a chronograph. Sight dope showed their velocities were within 100 fps of predicted speeds. Good enough for me.
Loaded ammo for two 22 caliber, one 24 caliber, two 26 caliber, one 27, two 28, four 30, one 31, two 32 and one 35 caliber rifle. Very good accuracy with all. Only worked up loads for one 26 caliber and one 30 caliber for a new bullet no data existed for. All without a chronograph. Sight dope showed their velocities were within 100 fps of predicted speeds. Good enough for me.
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