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Newbie with a question
Hi all! Am I ever glad I found this forum. I am, as of today, the proud owner of a new SSK 300 Whisper AR-15. It took several weeks, but it was worth the wait. SSK builds a first class firearm, and I'm not an easy person to impress. I've got a reloading question for you folks. I've got some Sierra 220 gr. RN that I'd like to load. Anyone have any luck with these? I'm using 10.3 of AA1680. My real question would be about the OAL of a cartridge using the 220 gr RN. Should I start at the max OAL for a .223 AR-15 mag (2.260) and do the ol candle carbon test to check for evidence of lands? Some data I've found indicates that 2.245 would be the max OAL for this load. Anyone have any lengths for this particular load?
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