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Rifles, Reloading, Optics, Equipment
Reloading
What first? Powder or seating depth?
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<blockquote data-quote="rscott5028" data-source="post: 553394" data-attributes="member: 24624"><p>My method is similar to the other posts. </p><p> </p><p>In a nutshell... </p><p> </p><p>Start with good bullets (Berger) and brass (Norma for 7RM). Use good brass prep techniques. </p><p> </p><p>Pick a powder that's known to work for the cartridge. RL22, H4831sc work for me. Others are good, but I had no need to try them in my 7RM Sendero. </p><p> </p><p>Choose a seating depth that makes sense based on success that others have had. I usually start .010" off the lands. </p><p> </p><p>Run a ladder test to find one or two nodes or sweet spots. A chrony is very helpful as part of the ladder test process. </p><p> </p><p>If nothing looks promising, then check your rifle and perhaps start over with a different bullet or powder. </p><p> </p><p>Fire some five shot groups for the chosen nodes to make sure it wasn't an accident. </p><p> </p><p>Choose the best node and hold the powder constant while shooting groups with various seating depths. </p><p> </p><p>Shoot your best load long range with at least 4x 5 shot groups. </p><p> </p><p>Fine tune with smaller increments of powder and/or seating depths, primers, etc, if you think you need to. Don't forget that your throat will errode. So, periodically, you may need to adjust your seating depth. </p><p> </p><p>-- richard</p></blockquote><p></p>
[QUOTE="rscott5028, post: 553394, member: 24624"] My method is similar to the other posts. In a nutshell... Start with good bullets (Berger) and brass (Norma for 7RM). Use good brass prep techniques. Pick a powder that's known to work for the cartridge. RL22, H4831sc work for me. Others are good, but I had no need to try them in my 7RM Sendero. Choose a seating depth that makes sense based on success that others have had. I usually start .010" off the lands. Run a ladder test to find one or two nodes or sweet spots. A chrony is very helpful as part of the ladder test process. If nothing looks promising, then check your rifle and perhaps start over with a different bullet or powder. Fire some five shot groups for the chosen nodes to make sure it wasn't an accident. Choose the best node and hold the powder constant while shooting groups with various seating depths. Shoot your best load long range with at least 4x 5 shot groups. Fine tune with smaller increments of powder and/or seating depths, primers, etc, if you think you need to. Don't forget that your throat will errode. So, periodically, you may need to adjust your seating depth. -- richard [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
What first? Powder or seating depth?
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