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The SASS will live on a diet of luxury match-grade ammo only. The M1A will be happy with whatever it's fed.

Now the SASS is not set up as a match rifle. It still has standard SAAMI chamber dimensions and freebore. Minimum chamber and zero freebore means you have to think long and carefully about every round you put in it, and can vouch for the round's dimensional pedigree.

I figured! I've also got a very accurate and NICE rifle that I'm careful about what I feed it!

I'm curious about the SASS.... is it possible to seat out bullets for accuracy ("almost" engaging lands) and STILL have them fit into the magazine of the SASS? Also, what's the twist rate of the barrel? I'm going to "guess" that it's a 1:10". :-)

I'm curious about the SASS.... is it possible to seat out bullets for accuracy ("almost" engaging lands) and STILL have them fit into the magazine of the SASS? Also, what's the twist rate of the barrel? I'm going to "guess" that it's a 1:10". :-)

Good guess, it's 1:10.

I'm not sure what the maximum cartridge length could be, but it still has to feed through the magazine with enough space left for dimensional tolerances. I'm sure custom rifle makers make clients sign a waiver that they're buying something with minimum dimensions all around, and accept sole responsibility for what they put in the chamber.

I notice that Smith Enterprises offers the M14 SASS with a 1:10 twist, chambered for the M118LR Special Ball round. Without having dimensional drawings in front of me, all I can guess is some dimensions are held about .0005 smaller, with smaller allowable deviation. They still have to guard against potential damage from max-dimension ball ammo used in it.

If push comes to shove, I'll ask some 240G gunner if I can feed my baby on a bit of his ball ammo.