What causes this?
I have never really noticed it much with my 12ga, but definitely notice it with the 410 tss loads.
I can shoot with a squeaky clean barrel and have hit counts in the 200 range, bore snake it a couple times and be down in the 140s with the next shot. Try a different choke and similar results. First one is in the 180s and the next shot is in the 110s.
Shooting big paper and notice it with both shells I bought and shells I have reloaded.
From now on I will be shooting hand loads based on whatever powder charge and choke gives me the most CONSISTENCY from shot to shot, just would like to know what influences the swing. Maybe its simply clean vs fouled barrel/choke
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Sounds like it's fouling. Maybe try polishing the barrel if you haven't.
Yeah I actually honed it with a flex hone
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Welcome to the 410..gotta keep em clean..not bore snake clean either..I have two and they are both the same way
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Sounds like your gun likes to be squeaky clean. Listen to your gun. It takes really slow burning powders to safely push heavy loads through a .410 bore. Those slow burning powders leave a lot of residue. I only shoot 12 gauge, but those guns strongly prefer to be squeaky clean, so that is the only way I shoot them. Bore snake then nylon brush and swab with Shooter's Choice between every shot. Consistent as can be.
Thanks all, good info
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Shot patterns always random especially when you looking at 10 inch circle instead of 30
Tighter the choke and smaller the bore more erratic things get
Now 410 pellets more in contact with barrel walls