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Long Range Hunting & Shooting
338 Lapua Ackley Improved pressure signs
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<blockquote data-quote="jskmtd" data-source="post: 1712811" data-attributes="member: 19880"><p>I recieved my new 338 Lapua ackley improved and after fire forming some brass started working up a load. Rifle components consist of a 28" proof barrel and defiance deviant hunter action.The fire formed case has a h2o capacity of 121.7 grains for reference. I started with Retumbo, Lapua brass, and Berger 300 grain otm. At 95 grains of Retumbo and a coal of 3.805", which is .020 off the lands, I'm seeing faint ejector marks velocity was 2812 fps. At 96 grains ejector marks still faint muzzle velocity 2852 fps. Velocities taken with magneto speed. I was hoping to see more velocity than this, is this wishful thinking? I went up to 93 grains fire forming and didn't see any signs of pressure.</p><p>Let me know if I should be checking anything else. Any ideas appreciated.</p><p>Thanks,</p><p>Jon</p></blockquote><p></p>
[QUOTE="jskmtd, post: 1712811, member: 19880"] I recieved my new 338 Lapua ackley improved and after fire forming some brass started working up a load. Rifle components consist of a 28" proof barrel and defiance deviant hunter action.The fire formed case has a h2o capacity of 121.7 grains for reference. I started with Retumbo, Lapua brass, and Berger 300 grain otm. At 95 grains of Retumbo and a coal of 3.805", which is .020 off the lands, I'm seeing faint ejector marks velocity was 2812 fps. At 96 grains ejector marks still faint muzzle velocity 2852 fps. Velocities taken with magneto speed. I was hoping to see more velocity than this, is this wishful thinking? I went up to 93 grains fire forming and didn't see any signs of pressure. Let me know if I should be checking anything else. Any ideas appreciated. Thanks, Jon [/QUOTE]
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338 Lapua Ackley Improved pressure signs
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