8300 PSI TOO MUCH FOR 10 GA TWIST

[J. A. EARLY]

I am looking for opinions if one of Sherman Bell's loads is too hot.

I had the components, Remington black letter hulls cut to 2 7/8", Winchester 209 primers, 29 grains Universal Clays powder, and SP10 wads. Loaded his 1.5 ounce loads with #4 American E shot and buffer (loads same as lead). He list the load at 8300 psi with a velocity of 1161.

I have an urge to kill a deer with the 33 #4 lead buck shot or the 23 #2 lead buck that equals 1.5 ounces in a NH Twist with .040" minimum right barrel and .050" minimum left barrel. Slight pitting.

I've fired one of the #4 AE shot through the left tube (strange pattern, shot holes through paper looks like a bullet that has tumbled in flight).

Still have all my fingers and did not kick much at all, but have not fired the right barrel yet. Opinions on should I back down to the 1.25 oz. loads and 6000 psi and same velocity?

Both barrels are full (.783/.747 & .783/.746).

Thanks.