Main Menu
Newest Members
RANGERRONG, jmusil, the buck shooter, txmudd, Texas_Sport_Shooter
63298 Registered Users
Top Posters
dogcatcher 85122
stxranchman 52214
RWH24 44568
rifleman 44341
bill oxner 43825
BOBO the Clown 43129
BMD 40667
Big Orn 37484
txshntr 35067
SnakeWrangler 32682
Forum Stats
63298 Members
45 Forums
446651 Topics
6155686 Posts

Max Online: 16728 @ 03/25/12 08:51 AM
Topic Options
#6493125 - 10/12/16 08:53 PM Subsonic 7mm-08 Rem - 160 grain SP
ChadTRG42 Offline
THF Celebrity

Registered: 09/16/09
Posts: 12235
Loc: Lewisville, TX
I finally had the chance to work up a good Subsonic 7mm-08 load with a Speer 160 grain SP bullet. Barrel was 20" long with a Shark Tiger Shark suppressor. Rifle was a semi custom Tikka build with a 9" twist (Thank you FiremanJG!). They were running right at 1040 fps, right where I want them.

Also why use a 160 grain Speer SP (soft point) flat base, instead of a BTHP, VLD or match bullet? When shooting at subsonic speeds, bullet stability becomes a huge factor for the bullet to properly stabilize and for it to shoot well. Bullet length is a major factor in how stable it is out of the muzzle. In a given twist rate (like a 1:10" or 1:9" barrel twist) and slow subsonic speeds, a shorter, flat base bullet is more stable than a longer BTHP or VLD match bullet of the same weight. The 160 grain Speer SP flat base is a much shorter bullet than a similar weight BTHP bullet, like a 162 A-max or 168 Berger VLD. This allows the 160 grain SP flat base to be more stable and have the potential to be more accurate at subsonic speeds than a BTHP design. Also, BC (ballistic coefficient) is for supersonic flight, and does not matter at subsonic speeds. Having a high BC bullet at subsonic does not benefit the shooter at all. This is why the 160 SP flat base bullets work well as subsonic round!

4 shot group and a 3 shot group during testing at 100 yards.


Custom and Precision Ammunition!!
Type 01 and Type 06 FFL

#6493562 - 10/13/16 08:35 AM Re: Subsonic 7mm-08 Rem - 160 grain SP [Re: ChadTRG42]
FiremanJG Offline
THF Celebrity

Registered: 12/16/08
Posts: 23316
Loc: Wolfe City, TX
My pleasure, Chad! It was a very productive range day.

Love hearing a sub hit paper. These loads are super quiet!

Think it was a 4.3 Mil correction, from a supersonic zero. Not too hard to remember that. Now we need to ear hole some hogs with them, you know for scientific purposes. grin

800 Yard Steel Range
Precision Rifle Instruction
Memberships and Classes Available


© 2004-2016 OUTDOOR SITES NETWORK all rights reserved USA and Worldwide