I'm going to revive this because this is exactly what I'm going through now with mine.
I believe my rings are a set of Savage low profile. My 10x40 Elite fits on there and is very close to the ocular when cycling the bolt handle. I put a set of unknown brand high rings on and the height is good, but the scope is too far forward.
Savage model 110 LA with flat rear boss. It has Weaver style rings that will fit a 40mm obj lens, but because of the long action in 7mm Rem Mag, the scope is too far forward.
Question is, does anyone make a Picatinny rail for this rifle with an extended base? Or would a standard rail be enough to gain 1.5 -2" or rearward scope travel?