Originally Posted by POP
Been 16 months but worth the wait!
375 Viersco mag proprietary cartridge. One of a kind.
The 375 Viersco Magnum was developed for the super long range" Hard Target Interdiction" rifles.
33.5" barrel test
375gn Cutting Edge bullet
H-BMG 50 powder
9100 Foot pounds at the muzzle
3000 yds super sonic
350gn Predator solid
Custom action from Dave Viers, 34" Lilja barrel 1"9 twist to facilitate up to 450 gr 375 bullets. Manners stock. etc.
The cartridge compared to 338 RUM and 280 AI---180 gr capacity
Theoretically it will launch 260 accubonds at 4000 fps
but it will not stabilize them.
Here is the webpage.....Yes that is my rifle on it!!!
375 Viersco Magnum
375 VM Test Results
VERY nice looking rifle! A few questions/clarification, please:
1. The ballistic data you note at the beginning of the post are from the bottom of this Viersco page - 375 VM Test Results
Those tests were done in Feb 2012, about the time you placed your order (16 month build). I understood that those tests were done with the XLR-chassis-based rifle (also pictured on the Viersco page), at that time with a 33.5" barrel. Dave subsequently went forward, per the info on that page, to a 42" barrel and then started dropping back (chopping the barrel off) and testing for results. Your pic notes a 34" Lilja barrel and the pic of your rifle on the Viersco page notes,"Custom Viersco Single Shot Action, Manners carbon fiber stock, Lilja 9 twist 36" barrel with 4 port shark bite muzzle brake, Stainless on black stock finish, "spider webbing"." Long way to get around to it, do you have any ballistics from your finished 34" barreled rifle? If not, what's the latest plan?
2. The brass you show is properly stamped. Of whose manufacture?
3. You note a one-of-a-kind design (for the cartridge). I was under the impression that Dave has built, and is building, others, specifically V2, long necks. Was (is) yours the only short neck? What caused you to go "short neck"?
4. The action is noted as "custom action". Dave's site notes "Barker Machine Works will be offering a modified action just for the VM cartriges." Is yours an "enhanced" Barker Overwatch or an action John is now offering of his own design and manufacturer?
Thank you, great shooting, and God Bless!