I can't speak to the recoil aspect. You're building a reasonable weight .308 - can't see recoil being an issue with any of them. (others might have different thoughts on that)

IIRC, the Sporter is only .5" shorter than the classic. But the Sporter is more than generous up-front and will swallow that barrel with aplomb. smile

With the LV, I'd still go with the Classic but you've only got to please you.

Give McMillan a call and talk to them about it. They'll have calipers at the ready, will grab the stock you're interested in and give you any measurements you may need.

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WWP53D