Try to keep short! Got a Krieger 8twist that has a standard saami chamber. Been abused absurdly! 26" pipe has seen varget, h4350, imr8208, rl26, aa4350, imr4350, h4831sc & rl16. Also seen 130ar hyb, 135classic, 140hyb, 140amax, 140eld,142smk, 143eldx, 147eldx & 150smk. Long & short is the throat is toasted! But I found a ( single ) load that does really well! lapua brass, cci#41 primers, rl16 & 150smk.. My MV is hovering round 2825 & ES has played out @ sub 20