Barrel "Conditioning".

[Flaw3d]

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.

Different brands of pellets have different percentages of elements in them which affect hardness, coefficient of friction, B.C's etc which all have an effect.

I've learnt more on the boards in 12 hours than i have in 4 years of shooting... To be fair i always finish a tin before id start a different tin - had no idea they would affect each other though.

[SussexDave(big)]

I know a good shooter, who cleans his barrel every shoot, an puts very few conditioning pellets through. But it seams to suit his style, his rifle etc as he normally gets in the 50's (HFT)

I myself haven't got skilled enough yet, to comment.