M-70 Classic in 338-300 RUM
- Trued M-70 Classic CRF action
- Kevin Wyatt extended magazine box ( 3.825” inside length)
- Benchmark HV Contour, 30,” 9.35 twist, 5R barrel
- Tight neck—requires turning
- Custom prone muzzle brake
by Curt Mendenhall
- McMillan Prone Stock
- Nightforce NXS Zero Stop 8-32x56 NP-R1 Reticle
- 20 MOA Scope base
- Low round count
- Weighs approx 18 lbs with the mounted scope
$3500 shipped via USPS to a valid FFL. Scope $1850 shipped, Rifle with base, $1750 shipped. I may consider a partial trade on the rifle and scope combination for a M-70 Classic in 300 RUM. I’m not really interested in any other trades.
I haven’t had the time to sort this rig out and my interests are taking me elsewhere. Initial load testing has shown promise of 1/2 MOA at 550 yds with 300 grain SMKs at around 2800 fps. “Promise” means after I figured out how to use the bipod from prone, I put two shots around 2.5” apart at 550 yds. Best 100 yd groups are in one hole. I would expect final load to be somewhere between 2700 and 2800 fps. Extraction will become a little sticky with H1000 and velocities over 2800 fps with fired brass. New brass works fine at up to 2850 fps, leading me to believe my sizing die needs to be a little smaller or the chamber should be opened up a little—perhaps to 338 Edge. However, I make no guarantees as to how well anyone else will load for and shoot it. Getting good loads and high accuracy requires skill and practice.
The rifle will easily feed two from the magazine. Kevin Wyatt himself helped me with the ejector and feeding work. Curt Mendenhall, a local smith and 1000 yd BR shooter, did most of the machine work. I did the bedding work—not pretty but stable and stress free. I also opened up the rear of the ejection port a bit. The stock looks okay, but a paint job would really dress it up. This rig is like most of my projects—looks okay, shoots great. Bipod not included.