I absolutely get the allure of wildcats, but as I’ve aged my practicality has taken over and I now want to be able to walk into a store and buy factory ammo should the need arise. So, were it me, I would go with the 6mm Creedmoor. The others you mentioned would perform similarly but you would not be able to walk into a Sportsman’s Warehouse or the like and buy a box of ammo loaded with VLDs or ELDs.I am looking to have my first rifle build. I am looking for a versatile , kind of do it all cartridge that I can shoot paper, coyote hunt as well as hunt antelope, whitetails and mule deer with. I would like to be able to target shoot to 1000 yards, and be able to effectively extend my hunting range to 600 or so yards. I believe a 6mm offers good ballistics without additional recoil and muzzle blast. I would also like to shoot it suppressed (TBAC Ultra 7 Gen 2) without sacrificing any more performance than necessary.
So, which cartridge should I go with? 6x47 Lapua, 6xc, 6 Creedmoor or 243 Ackley Improved? I do reload.
I like the idea of “wildcat” cartridges with a custom rifle, if nothing more than to be different and “cool”. The Creed offers factory ammo and performance, but is more mainstream if you will (plus and a minus). The 243AI, offers option of factory while providing a wildcat factor, however, I do not know much about it and the performance in comparison. The 6x47L and 6xc offer wildcat coolness, but less performance to the other 2. I would prefer proper headstamp brass (within reason), but not absolutely required.
What would you do, what barrel length and what can I expect for performance? I would like to shoot the ever popular 105 Hybrid, 108 ELDm and possibly 115 Berger. Probably be a 7 or 7.5 twist as I live at 1000 ft elevation and it gets cold here. Any issues shooting 70-87 grain bullets out of a 7 twist?
Love to hear your opinions.
Parts for build that I am leaning towards:
Big Horn Origin
Rock Creek Carbon 7 or 7.5 tw ?
Mesa Precision Adjustable Stock
Hawkins or HS DBM ?
Trigger Tech Primary Trigger
Leupold VX5hd or Mark 5HD ?
My hunting rifle is built on an Origin action and I would absolutely use another.
The only Leupold I would consider would be a Mark V. I would not trust any of the other Leupolds to track correctly over the long term. I use a Bushnell 3-12 LRTSi and LOVE that scope.
I normally go with 24” barrels on my hunting rigs but would certainly go shorter if I were going to suppress it. I would count on loosing 25-30 fps per inch of barrel. You’ll gain a little fps back with the suppressor but not all of it.
Have fun with your build. The only one that has to approve of it is you.