Coltdriver;
Glad to help. I'm a left/left shooter & my daughter is left master eyed & right handed. When she changed from right to left, to follow her dominant eye, her accuracy improved about 10%.
I've got a full battery of left bolt guns, though none based on the MRC action. I'm familiar with the MRC, a friend having had a custom .338/06 recently built on one, and a visit to the operation in Kalispell on my part. I could consider having my next gun built on an MRC.
If you wouldn't mind letting me know your son's age/size/weight, I'd be happy to make some suggestions. I'm pretty aware of what's out there, new and used, in available guns & calibers.
Another model 70 type action that's possible is the Dakota. However, they are expensive. Then there's the CZ question. CZ is coming around to our way of thinking with the release a couple of years ago of the 452 American .22 in LHB, & now the centerfire 527 mini-Mauser action. I feel that if the 527's sell well, they'll release a CZ550 LHB. I've written them urging them to do so in calibers the other companies aren't covering. Such as 6mm Remington instead of .243, or the .257 Roberts, 6.5 Swede, .280 Remington, etc. In other words, calibers a lot of us lefties may want, but no other manufacturer has ever offered on a commercial basis.
900F