So, among the PC users, the general consensus is that the Cowboy Rifles are useless now, right?
Just did a short run through the Mojave.
When I used to snipe with my Brush gun, I would say I would land a hit in 1-3 shots. Now it's more like 1-5. It can still be sniped with since enemies at that range will take that amount of time to react anyways, so the spread isn't crippling, but at the same time you have to ask yourself if it's worth carrying an extra gun with a different kind of ammo. A sniper will hit for sure, will crit more often and fires faster so you're guarenteed two hits. A Brush gun fires slower, crits less and is less accurate, the only benefit being that the base damage is rather high; might as well learn to use the sniper or get an Anti-Material Rifle instead.
I dunno why you would use a Brush gun (or any lever action rifle) for mid-range either, considering the automatic weapons all got accuracy/damage increases, so they'd be superior there too.
The Cowboy Perk would still be beneficial for someone who uses revolvers, and the rifles can still be used as your main weapon, but if we're talking best-of-the-best gear in each category, yeah they've lost their value. Get a sniper for long-range, an automatic rifle for mid-range and a good fist for close-quarters.