Pullit: Pardon my slow reply its been Hunting season and gun chasin season and finally I have run down some info for you.
The cartridge used to set this record was a 6m/m Remington Benchrest Ackley Improved!
I got this info from a friend and fellow competitor of the new record holder, just this morning.
By the way the fellow I got the info from was a former world record holder in 1,000 yard benchrest himself.
He held the record for ONE day!
He set the record on Saturday in Missoula, Montana and on Sunday (the next day) someone back east broke his record.
You know what they say "records are made to be broken" - and "fame is fleeting".
Hold into the wind
VarmintGuy