As long as you don't over sugar a two litre plastic bottle you can get away with bottling in it . Did have one explode once , but the brother was getting a little happy with the sugar at the time . we had at the time a 40 pint barrel ( too big really), a 20 pint barrel about 20 pint bottles ( free from Beamish and Crawford , we just asked at the gate and they gave I'll miss that brewery ) ,
The crown capper was driving us mad on one batch and we just got sick of it and put about 8 litres into plastic cider bottles ( one of those burst , but in fairness we lost a good 4 bottles as well to hammer damage and bursting caps .)