6mm Creedmoor Gas Gun — Savage MSR 10 Long Range

Savage’s MSR 10 Long Range is now available in 6mm Creedmoor. We think this rifle is a good choice for PRS Gas Gun matches in the Open Division. This AR10-type rig can shoot a larger, more capable cartridge than a .223 Rem (or 224 Valkyrie). And we think the 6mm Creedmoor is definitely a good choice for tactical/practical applications. In fact in the first-ever PRS gas gun match, the winner ran a 6mm Creedmoor. (Story HERE).

The 6mm Creedmoor case design allows room for long, heavy bullets while still functioning in an AR10-size action. The 6mm Creedmoor has become popular with High Power and PRS shooters because it offers excellent accuracy, good ballistics, and moderate recoil. As explained below, the 6mm Creedmoor offers a flatter trajectory, with less recoil, compared to the “parent” 6.5 Creedmoor.

Savage’s semi-automatic MSR 10 Long Range boasts some nice features — such as a Magpul PRS Gen 3 stock, and non-reciprocating, side-charging handle. The MSR 10 Long Range also features a two-stage target trigger, plus upgraded barrel with 5R rifling and Melonite QPQ finish. MSRP is $2284.00.

Savage MSR 10 Long Range Features:
– Non-reciprocating side charging handle
– Fluted 22.5″ heavy barrel with Melonite QPQ finish, 1:7.5″-twist rate
– Custom forged upper/lower for unique look and compact size
– Magpul PRS Gen3 buttstock
– Free-float M-LOK rail
– Two-stage target trigger with nickel boron treatment; 2.5 to 4-pounds
– Chamberings: 6mm Creedmoor, 6.5 Creedmoor, .308 Winchester

Savage MSR 10 Long Range (6mm Creedmoor, 6.5 Creedmoor, .308 Win)

Ballistic Comparison: 6mm Creedmoor vs. 6.5 Creedmoor

Which has better ballistics, the 6mm Creedmoor or the original 6.5 Creedmoor? Well, the answer depends on your bullet choice and the speed of your load. We went to the Hodgdon Reloading Page and selected the MAX listed loads for H4350 for each cartridge, choosing Sierra’s 107gr MatchKing for the 6mm Creedmoor, and Sierra’s 142gr MatchKing for the 6.5 Creedmoor. Hodgdon’s max H4350 load for the 6mm Creedmoor with 107gr bullet yields 3009 fps at 60,300 psi (24″ barrel). The max H4350 load for the 6.5 Creedmoor with 142gr bullet runs 2694 fps at 59,800 psi (24″ barrel).

With these listed Hodgdon Max loads, the 6mm Creedmoor had a flatter trajectory and less wind drift. Here is a quick comparison, based on data from JBM Ballistics.

6mm Creedmoor with 107gr SMK
Hodgdon H4350 Max “Book” Load, 3009 fps

600-Yard Drop = -11.5 MOA | 600-Yard Windage (10mph 90°) = 24.4 inches

6.5 Creedmoor with 142gr SMK
Hodgdon H4350 Max “Book” Load, 2694 fps

600-Yard Drop = -14.4 MOA | 600-Yard Windage (10mph 90°) = 25.8 inches

Commentary — Ballistics Comparisons and “Beyond Book” Loads
We are aware that some shooters are running faster loads in both 6mm Creedmoor and 6.5 Creedmoor rifles. The ballistics comparison would also change with different bullet choices for one or both calibers. However, by using Hodgdon’s listed max loads with the SAME Powder this is a meaningful starting comparison for the two related chamberings. Bottom line, the 6mm Creedmoor shoots flatter and has less wind drift. It also definitely has less recoil. This 6mm Creedmoor load has 2150.8 ft/lbs of energy at the muzzle. The listed 6.5 Creedmoor load has 2288.0 ft/lbs of energy at the muzzle.

Of course we know some guys are running their 6.5 Creedmoor faster with 140gr-class bullets. That would alter the comparison. But if you ask most actual PRS competitors who have campaigned BOTH the 6mm Creedmoor and the 6.5 Creedmoor, they will tell you the 6mm Creedmoor has less recoil, and a somewhat flatter trajectory. That makes this new 6mm Creedmoor Savage MSR 10 rifle an interesting alternative to its 6.5 Creedmoor brother.