[QUOTE
All I really want to know is is the 375 AM the king of the hill over all 375s and 338s.
I want the baddest 375 out there[/QUOTE
The 375 AM is king of the hill in my opinion, but on paper the 375/416 Barrett is.
The 375 AM is a wildcat but Kirby has fireformed brass available and dies.
His rifles are accuracy tested to 1000 yards before they leave the shop and come
with load data.
These rifles can also be built as light as 15 pounds with a bipod so carrying one in the field is manageable.
It is also a much more efficient case and I'm pretty sure loaded with the same bullet it will be within ~100fps of the barret with significantly less powder.
With the Barrett you will have to get custom dies made.
The rifle will have to be built on a bmg receiver so it's going to be heavy.
You will have to find someone to walk you through forming brass.
Due to the fact that there are a very small number of these rifles out there vs chey tac based wildcats there is little information on them and a higher risk of running into issues unlike the Chey tac base wildcats which have been put through the paces and refined.
It will have much more blast/ concussion from the muzzle brake.
I don't know from personal experience but I have read that 50 bmg primers can have a negative effect on accuracy. I can't remember why but look it up.
Don't know much about the VM2 but it does not seem to have caught on. I have a 338 AM and have no desire to go any bigger (until Berger releases some big .375s). It is also the most accurate custom rifle I own out of 4. I don't know your experience level but by the way your post is worded it appears to be very little, and that's fine you've come to the right place and we can help you best if you take a little more time to include more details about your experience level and your goals with this. This is not something I would recommend as a shooters or hand loaders first long range rifle. You might want start out with a smaller .338 and get a feel of how it performs at ELR or find someone that will let you shoot thier rifle. Email some of the smiths that build these cartridges and they will be able to help you better than anyone.
From reading on here I see that the 375/416 is considered the hottest, I wonder how it performs at extreme distances (2800 yards and beyond)
I don't have a much experience, but that will change when I finally get out of school. I currently shoot 338 Lapua mag and a m107 .50, but there is not a single 1000 yard range nearby. This past summer, we were on our annual family vacation on a ranch in Laredo and set up a target on plywood at 1019 yards. We sat on top of a porch where we could see the target and set up with the 338. I never hit the **** thing because we weren't sure where to adjust (with there being so much brush around, we couldn't tell if the bullet was hitting high, low, or elsewhere). And we had 2 people in a mule down the road away from the target watching for a splash. Saw nothing. We are able to shoot at 500 yards though with the target positioned on the main road. Did it with the 338 and 7mm 08.
I love long distance shooting and if there's anything in the shooting world I want to be good at, it's long range shooting. I also am fascinated with researching cartridges and seeing what new cartridge out there is pushing the limits. Which is why I was hellbent on finding out if the 375 AM was the best out there.
I also like to collect guns, mainly WW2 era, but I would like to have about several long range rifles (a mix of custom and factory) along with several African hunting rifles (mostly big bore double barrel and bolt action rifles). I am also fascinated with the gigantic dangerous game rounds offered, and like I said above, would like to own at least several rifles like it. And when I say big I mean 500 nitro express and up.
And yes I believe I have come to the right place. I don't mean to troll when I ask questions on here. I ask a lot of questions because I am always wanting to learn.
Next on my wish list is a .375 AM or a 8mm vampire OR .300 werewolf (cartridges with neat names that deliver a massive punch). And I'm ok with the wait on Allen's rifles, I know he does fabulous work. That's one thing missing out of my collection is a custom rifle. My uncle, cousin, and grandfather all have custom .300s and my aunt will soon be getting a custom .280 ackley improved.
I have been shooting all my life FWIW (I'm only 22, so that may not be saying much)
My goals are to be able to shoot at distances of 2000+ yards. That is a long term goal though. Short term, I want to be able to put together a nice grouping at 1000 yards. But again it's difficult because there is no place near me that has even a 1000 yard range and being in school almost all the time doesn't help (as an accounting major, it is very demanding)