Barrel "Conditioning".

[Banjo]

Whenever a brand of pellets is changed (sometimes even different batches of the same pellet) or if the barrel has been cleaned then the barrel has to be "conditioned" to that particular pellet by putting at least ten shots (I do 20 to be on the safe side) through it before trying a group.

Neil

Thanks for this, it's something I kind of suspected / worked out but it's good to have confirmation. Been testing JSB's from their 'sample pack' and didn't find too much of an issue switching from one to another, but when I switched to RWS, H & N, or AADF my groups went all over the place for the first mag before starting to settle down.