TC Scout Blow Back???

[Colorado_Ryan]

I was out shooting a new scout ( new to me it’s a used gun) and on the second shot I had burnt powder blown back into my face. Luckily I was where sunglasses. It severely burned my check under my eye.

I am taking the gun to a gun smith today but any thoughts on what might have happened or be wrong with the gun??

I was shooting a light load 75 grains of ffg and a 350 grain conical with standard caps.