All the bolt action weapons are left handled something that is extremely rare in the real world and non-existent in the Fallout Universe. Nothing like a healthy dose of "realism". I'm told by a Nexus Mod that it's for "animation purposes" so that the weapon remains glued to the right hand.
The whole weapons/combat is a throwback compared to New Vegas and even FO3 as far as realism and immersion are concerned. And Fallout lore? Nothing but homemade/jury rigged weapons (even though actual rifles and pistols exist in every other part of the Fallout world from Fallout 1 to New Vegas). Except for a 10mm (unlike any other in any wasteland), a crude sawed off double barrel shotgun and hunting and "sniper" rifles (all variants of the original design) that had to be made backwards to suit the primitive game mechanics, no animations, no visible equipped weapons in third person, bullets and laser "beams" that seem to wander through weird arcs (especially in VATS where lasers behave like slow motion lightning bolts) and over gyrating paths to reach their targets (bullets leave these smoky little paths in VATS), guns that take up to 5-10 (or up to 20 30 or more for some enemies) shots including more than a few head shots, to kill single enemies while the rest of the bad guys or creatures are blowing or beating your donkey off, even in VATS... and that's just the weapons/combat. Wish I'd known I was paying $60 for a copy of Stalker Goes to Boston.
Maybe I'm just resistant to change but this isn't Fallout to me. It may actually turn out to be a pretty good game but it has a very tenuous connection to the rest of the wastelands in the Fallout Universe and to game mechanics as we've come to know them over the years. Hopefully the modders can help make it into more of an actual Fallout game but I suspect I'll be returning to FNV and TTW when all the new wears off.