The only shells I have to be carefull of on my Mec Jr. are the 16 gauge. As I use the Remington black hull and they vary in length so if I am not carefull the long hulls will have a weep hole in the crimp. If I just don't come full stroke on the final crimp they are fine. Just a matter of "Feel"
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"Much care is bestowed to make it what the Sportsman needs-a good gun"-Charles Parker
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