"It makes sense to me a gun hammered with 11,000 p.s.i. breech pressure will be stressed more than one coddled with 7,000p.s.i. ammunition."

OK, Ron, please explain it so it makes sense to me, too.

Should I stop using my 3/4 ounce load that generates 11,000 psi and start "coddling" it with 1 & 3/8 ounce at 7800 psi?

The 1 &3/8 generates 3 TIMES the recoil energy, but with lower pressure it will be less stressful, right?