Remington Premier Magnum Question!

[FireFly908]

Today I was patterning my 870 Super Mag with a factory X-Full choke at 30 yards.  I was using Remington 3 inch Premier Magnum 3 oz 5 shot shells.  It patterned nicely but I was greatly surprised to find one of the shots didn't spread out.  It left a 3 inch hole right where I would want it to, but why wouldn't a random shot spread out?

[jebs chokes]

I dont  know but last weak my freind had a winchester3.5  do the same thing  at 40 yards .  The wad went true  the shooting board abought 10 yards futher'[ scarey stuff ]  . turkeyhunter

[FireFly908]

I looked but did not find the wad!