Is this the Remington thumbhole rifle you're referring to?
https://www.cabelas.ca/index.cfm?pageID=71&§ion=1187§ion2=1724§ion3=1952&ID=9367
If so, my brother just picked one up a couple weeks ago, in .300 Win. Mag. for elk and moose hunting. He put a Leupold 3-9x50 on it, and we sighted it in last weekend.
I can't comment on the Browning, but the Remington has a detachable box magazine as well, and the safety is a thumb-actuated lever that is up behind the bolt handle. The thumbhole stock is very comfortable to use, I found it easy to grip and handle the rifle one-handed, even though it is a fairly heavy gun.
The 26" barrel is fluted for faster cooling, though after a 24-round session, we didn't notice it heating up at all.
The trigger did not have any noticeable creep, and broke crisply, though I thought it was a bit heavy. This may smooth out the more we use it. One thing we both noticed was that occasionally the bolt was a bit difficult to close. This may also work itself in once we use it a bit more.
Having never fired a cannon in this caliber before, I thought the recoil was ... significant. It packs a bit of a punch, as far as I'm concerned. If it were my rifle, I'd look into a Limbsaver recoil pad, but that's just me.
Weather conditions were not optimal, we had about a 30-mph rear quartering wind, which made us a bit wobblier than we usually are (we didn't have any sandbags or a bipod with us to help steady our aim, just my range bag), but our best group was just over an inch at 100 yards, with Winchester Super-X 180-grainers. We're going to re-zero it with Hornady Superformance ammo this weekend, as this is what he'll be hunting with.
Hope that helps!
Cheers!
McClintock
