I'm interested to see the comments you might have for this. Howa and I have been working on a project somewhat similar. We are trying to find a combination of cartridge, weight, length, barrel taper, etc that will be the most versatile option for the western hunter who is only going to buy one rifle, possibly two.
Right now I have these rifles we are working with for the test, along with the ammo choices I am using based on past experience with these cartridges. All have H-S Precision stocks and are topped with Leupold VX-5 or VX-6 scopes.
6.5 CM 22" barrel - 129 grain Nosler AccuBond Long Range
.270 Win 22" barrel - 130 grain Nosler AccuBond
7mm-.08 22" barrel - 140 grain Nosler E-Tip and 140 grain Nosler Accubond
.308 Win 22" barrel - 165 grain Nosler Partition and 168 grain Nosler E-Tip
.308 Win 26" barrel - - 165 grain Nosler Partition and 168 grain Nosler E-Tip
.300 Win Mag 24" barrel - 180 grain Nosler AccuBond
.300 Win Mag 26" barrel - 180 grain Nosler E-Tip
I'm finding the hard part is to find the balance of weight versus cost. Even the lightest of these is more weight than my Alpine Mountain Rifles. But, the cost is significantly lower. Some are willing to pay that higher cost, some are not.
All are cerakoted, which is a pretty low additional cost for the weather-deterring benefits. All have come with factory trigger settings at 2.75#. Not sure if that will be allowed in a retail rifle, due to liability concerns, but the Howa trigger is a really good trigger and even "gooder" when set below 3.0#.
With no compromise for accuracy, the traits we are trying to balance are performance for the widest array of western hunting, cost, weight, ammo availability, durability, and low maintenance. It is turning out to be a harder project than I expected, given how many different situations we hunt in and how many different species we pursue.
Interested to continue following the discussion. Thanks to the original poster for starting this topic.
So far the leader is the 7mm-.08 as the all-around versatile cartridge, but I fear my past biases is influencing that decision. We'll see if that changes when we start in the heavy part of our elk hunting calendar.