If using svn build use ChangeActorPitch instead of SetActorPitch so you can interpolate movement

script "Recoil" (int ResetRecoil)
{
    int originalpitch = GetActorPitch(0);
	int newpitch = 0;
	int originalangle = GetActorAngle(0);
	int newangle = 0;
	int LeftorRight = Random(0,1);

	if(LeftorRight > 0)
	{
		newpitch = (originalpitch - random(0.01,0.03));
		SetActorPitch(0,newpitch);
		newangle = (originalangle + random(0.001,0.003));
		SetActorAngle(0,newangle);
		Delay(1);

		newpitch = (newpitch - random(0.01,0.03));
		SetActorPitch(0,newpitch);
		newangle = (newangle + random(0.001,0.003));
		SetActorAngle(0,newangle);
		Delay(1);

		newpitch = (newpitch - random(0.01,0.03));
		SetActorPitch(0,newpitch);
		newangle = (newangle + random(0.001,0.003));
		SetActorAngle(0,newangle);
		Delay(1);

		newpitch = (newpitch - random(0.01,0.03));
		SetActorPitch(0,newpitch);
		newangle = (newangle + random(0.001,0.003));
		SetActorAngle(0,newangle);
		Delay(1);

		newpitch = (newpitch - random(0.01,0.03));
		SetActorPitch(0,newpitch);
		newangle = (newangle + random(0.001,0.003));
		SetActorAngle(0,newangle);
		Delay(1);

		newpitch = (newpitch - random(0.01,0.03));
		SetActorPitch(0,newpitch);
		newangle = (newangle + random(0.001,0.003));
		SetActorAngle(0,newangle);
		Delay(1);

		newpitch = (newpitch - random(0.01,0.03));
		SetActorPitch(0,newpitch);
		newangle = (newangle + random(0.001,0.003));
		SetActorAngle(0,newangle);
		Delay(1);

		newpitch = (newpitch - random(0.01,0.03));
		SetActorPitch(0,newpitch);
		newangle = (newangle + random(0.001,0.003));
		SetActorAngle(0,newangle);
		Delay(1);

		newpitch = (newpitch - random(0.01,0.03));
		SetActorPitch(0,newpitch);
		newangle = (newangle + random(0.001,0.003));
		SetActorAngle(0,newangle);
		Delay(1);

	    if(ResetRecoil > 0)
		{
			SetActorPitch(0,originalpitch);
			SetActorAngle(0,originalangle);
			Terminate;
		}
		else
		{
			Terminate;
		}
	}

	else
	{
		newpitch = (originalpitch - random(0.01,0.03));
		SetActorPitch(0,newpitch);
		newangle = (originalangle - random(0.001,0.003));
		SetActorAngle(0,newangle);
		Delay(1);

		newpitch = (newpitch - random(0.01,0.03));
		SetActorPitch(0,newpitch);
		newangle = (newangle - random(0.001,0.003));
		SetActorAngle(0,newangle);
		Delay(1);

		newpitch = (newpitch - random(0.01,0.03));
		SetActorPitch(0,newpitch);
		newangle = (newangle - random(0.001,0.003));
		SetActorAngle(0,newangle);
		Delay(1);

		newpitch = (newpitch - random(0.01,0.03));
		SetActorPitch(0,newpitch);
		newangle = (newangle - random(0.001,0.003));
		SetActorAngle(0,newangle);
		Delay(1);

		newpitch = (newpitch - random(0.01,0.03));
		SetActorPitch(0,newpitch);
		newangle = (newangle - random(0.001,0.003));
		SetActorAngle(0,newangle);
		Delay(1);

		newpitch = (newpitch - random(0.01,0.03));
		SetActorPitch(0,newpitch);
		newangle = (newangle - random(0.001,0.003));
		SetActorAngle(0,newangle);
		Delay(1);

		newpitch = (newpitch - random(0.01,0.03));
		SetActorPitch(0,newpitch);
		newangle = (newangle - random(0.001,0.003));
		SetActorAngle(0,newangle);
		Delay(1);

		newpitch = (newpitch - random(0.01,0.03));
		SetActorPitch(0,newpitch);
		newangle = (newangle - random(0.001,0.003));
		SetActorAngle(0,newangle);
		Delay(1);

		newpitch = (newpitch - random(0.01,0.03));
		SetActorPitch(0,newpitch);
		newangle = (newangle - random(0.001,0.003));
		SetActorAngle(0,newangle);
		Delay(1);

	    if(ResetRecoil > 0)
		{
			SetActorPitch(0,originalpitch);
			SetActorAngle(0,originalangle);
			Terminate;
		}
		else
		{
			Terminate;
		}
	}
}