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Rifles, Reloading, Optics, Equipment
Reloading
Most brass too short. Trim them all?
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<blockquote data-quote="J E Custom" data-source="post: 1389610" data-attributes="member: 2736"><p>Max SAMME length is 2.620. All brass normally will be less than Max length because not all chambers are that long.</p><p></p><p>Ideally, brass should be .010 to .020 shorter than the chamber. If you know what your chamber actually it as long as your brass is shorter you are ok. If the brass is not slightly shorter than the chamber, there will/ may be pressure problems.</p><p></p><p>It is not unusual for cases to be trimmed .040 shorter than the chamber for rapid fire matches where fouling can stop the function of the weapon.</p><p></p><p>There is an ideal trim length for each chamber and use. Then there a practical trim length and it can be significantly different.</p><p></p><p>My recommendation would be that you trim all 300 that pieces to the same length and go from there. This will give you the best consistency, and longevity of your brass. Also as you shoot it you can check to see how much growth you are getting with your loading and make adjustments if need be. Remember growth means thinning. the more growth, the more thinning. This is one reason I am an advocate of sizing only as much as necessary so the brass does not have to grow very much to fit the chamber each time it is fired.</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 1389610, member: 2736"] Max SAMME length is 2.620. All brass normally will be less than Max length because not all chambers are that long. Ideally, brass should be .010 to .020 shorter than the chamber. If you know what your chamber actually it as long as your brass is shorter you are ok. If the brass is not slightly shorter than the chamber, there will/ may be pressure problems. It is not unusual for cases to be trimmed .040 shorter than the chamber for rapid fire matches where fouling can stop the function of the weapon. There is an ideal trim length for each chamber and use. Then there a practical trim length and it can be significantly different. My recommendation would be that you trim all 300 that pieces to the same length and go from there. This will give you the best consistency, and longevity of your brass. Also as you shoot it you can check to see how much growth you are getting with your loading and make adjustments if need be. Remember growth means thinning. the more growth, the more thinning. This is one reason I am an advocate of sizing only as much as necessary so the brass does not have to grow very much to fit the chamber each time it is fired. J E CUSTOM [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Most brass too short. Trim them all?
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