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Rifles, Reloading, Optics, Equipment
Reloading
7mm Mag Norma Brass, too soft?
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<blockquote data-quote="RobG5589" data-source="post: 1009163" data-attributes="member: 54561"><p>Norma brass is reportedly very good. Are you seeing ejector swipes or excessively flattened primers? The brass will only expand as far as the chamber will allow. I would look at the chamber for finish. If it is rough the brass can "stick" after firing. Rem chambers can be pretty sloppily cut at times. I shoot with a guy that had similar issues and after polishing the chamber all was good.</p><p></p><p>I have shot some pretty hot 7RM loads (3000+ with a 180 smk) from a custom chamber with cheap Rem bulk brass without the issues you are describing. I have even blown primers yet the brass still extracts.</p><p></p><p>Like wbm stated, the load you came up with is pretty **** good. Guns/chambers vary, what works in one will not in another. I would rock the 168 at 2850 and not look back.</p><p></p><p>Good luck, it's gotta be frustrating.</p><p></p><p>ETA: So I was bored and jumped on JBM. Here is 2850 vs 3050. Zero'd at 300 and going out out 700 yds.</p><p></p><p></p><p> inches of drop -73.3 moa of drop -10.0 inches of drift 25.8 moa of drift 3.5</p><p> inches of drop -85.4 moa of drop -11.7 inches of drift 28.7 moa of drift 3.9 </p><p></p><p>Personally, I would take the good accuracy and spin the dial another rev.</p></blockquote><p></p>
[QUOTE="RobG5589, post: 1009163, member: 54561"] Norma brass is reportedly very good. Are you seeing ejector swipes or excessively flattened primers? The brass will only expand as far as the chamber will allow. I would look at the chamber for finish. If it is rough the brass can "stick" after firing. Rem chambers can be pretty sloppily cut at times. I shoot with a guy that had similar issues and after polishing the chamber all was good. I have shot some pretty hot 7RM loads (3000+ with a 180 smk) from a custom chamber with cheap Rem bulk brass without the issues you are describing. I have even blown primers yet the brass still extracts. Like wbm stated, the load you came up with is pretty **** good. Guns/chambers vary, what works in one will not in another. I would rock the 168 at 2850 and not look back. Good luck, it's gotta be frustrating. ETA: So I was bored and jumped on JBM. Here is 2850 vs 3050. Zero'd at 300 and going out out 700 yds. inches of drop -73.3 moa of drop -10.0 inches of drift 25.8 moa of drift 3.5 inches of drop -85.4 moa of drop -11.7 inches of drift 28.7 moa of drift 3.9 Personally, I would take the good accuracy and spin the dial another rev. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
7mm Mag Norma Brass, too soft?
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