Well said. Since the OP is looking for less than 400 yards, it's too small to realistically see the differences in real field conditions. The wind doesn't even really matter. It's all on the shooter and shot placement. Now, if we're looking at a grand it'a a different story because remaining energy becomes important, etc. I could make a case for a 6.5 Creed under the stated requirements since the OP already has 2, 30's. I think we got off track. I consider myself guilty as charged.Ups and downs to all of them, I've drank the coolaid. At the end of the day it's a 7 rem mag. It doesn't do anything a 7rm can't do. I like different too, I went 7x300 win mag and it shoots like any well built rifle in any chambering should shoot. The 7lrm offers nothing over a 7rm, unless you prefer one source of brass. 7SAUM OR 7WSM In a long action will run right with it. The 375 ruger was necked down to a 7mm as soon as it came out. Gunwerks made it their thing, it had some traction for a minute. It's a good cartridge, it just doesn't fill any gaps, it did what's already been done, offered nothing new. It's just more of the same, which is good stuff.
Just don't think your going to shoot with cartridges that hold 10 more gr of powder all being equal. There is no magic in this game, powder makes pressure, pressure makes velocity. Some may be slightly more efficient than others, but to be honest after shooting and loading for a lot of them.....it's mostly smoke and mirrors. If you want something different, go for it. If your hoping for an edge in performance, just know it's very slight edge.
We built three less expensive Rem 700 based rifles in 7 LRM. We use Craig's Custom rifles in Arizona. He builds a lot of big magnums. We never bought any of the factory ammo just reloaded ourselves. They have all been very accurate and used to kill a bunch of Coues deer and elk at extended ranges.I'm sure Gunwerks would like to sell a rifle. I think the ammo is $100-125/box. If that matters.
I have had a 7LRM for about 10 years now. I have taken at least 30 animals with it from whitetail does to moose at ranges from 30 yards to 647 yards. Yes there are many calibers to choose from out there and maybe there are some better but there will always be "the next big thing". I have only needed a follow up shot once and that was on me. If you decide to use this caliber I suggest the 180 berger. Happy Hunting!!!has any one shot this round at game at ranges under 400 yards .also who besides gunwerks chambers this and how is their work .