Perfect range day this morning so ran through 2 x 5 shot groups, 1@51gn and 1@51.5gn to satisfy my curiosity and others. Apologies for the messy target.
Noticed some visible bulging at the base of the cases loaded with 51.5gns. Around 3 thou, give or take. Is this a pressure sign worth noting? I did get tight bolt lift at 52 gns so….??
Aside from the flyer, 51gn is a clear winner. Better shooting would definitely tighten it up a bit and will run them over the chrony for a speed check but it’s under m.o.a so calling it done. Need the rounds for hunting around here as the 223 can be a wee bit undercooked for some situations.
Still have 130 SST’s, 130 + 140gn Sierra’s to play with this year and also keen to try out some Win760.
As always, look forward to your feedback. Cheers, Sidetrack
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