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Setback will happen regardless of neck tension or crimping method
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Long before the internet I noticed setback. I didn't know it was dangerous but did notice chambering problems, so I got a C&H cannelurring tool and that fixed it. The solution is a smaller ring inside the case which the bullet cannot get past.
I saw a home built machine that cannelures probably 10K loaded rounds per hour. The reason I noticed it was because I designed exactly the same mechanism in my head.
The carrot only gets into the mouth of the donkey that reaches hardest for it.
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CNC produced 416 stainless triggers to replace the plastic triggers on Colt Mustangs, Mustang Plus II's, MK IV Government .380's and Sig P238's and P938's. Plus Colt Mustang hardened 416 guide rods, and Llama .32 and .380 recoil spring buttons, checkered nicely and blued.
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