Just my opinion, no test conducted. The 4-tenner itself will contain the pressure until it clears it's end. The carrier bore is so much larger than the .410 wadding I would think no seal could be established so little pressure would be applied to it. I would think you could use them a good piece of bamboo fitted to a suitable breech.


Miller/TN
I Didn't Say Everything I Said, Yogi Berra