6.5x284 velocities

[Driller54]

I was wondering how everyone is getting such high velocities out of their 6.5's when the manuals are calling for a good 500fps under what I've read throughout this site with 107 grn bullets and up? Will be building one of these soon so any help is much appreciated.

 

[backwoods83]

The data your reading is for a 6.5x284 with a short throat in a short action I think it list the length around 2.850" max, in a long throat long action the length will be between 3.1 and 3.2" which gives you a lot of extra powder space, 3k fps in a 26" tube is attainable with a 140grn pill and several different powder. The 4350s, 4831s, 7828, H1000, MRP, N160 or 165.

 

[CogburnR]

As stated there are a couple of different versions of the 6.5x284.

The longer version is now a standard caliber the 6.5x284 Norma. The throat is .300" or so longer than the 6.5x284 short version.

Using RL17 and 140g Nosler Custom Competitions I get 2950fps in my Savage LRH which has a shorter than 26" barrel(26" including the brake).

I usually shoot H4831sc and 140g Noslers for 2800+fps. Max around 2850fps or so.

A true 26" barrel should have no problems reaching 3000fps with 140g bullets.

 

[tigguy]

In 3 new, consecutive serial numbered 110 Predator Hunters, we're getting averages in the 2830fps to 2850fps range. Loads consist of Lapua brass, Fed 210M primers, 51.2gr to 51.6gr of H4831sc, and 140gr SST's. 24" long, 1x8" twist factory barrels. Testing is underway for Berger 140gr VLD Hunting bullets, 140gr AccuBonds, and 140gr Sierra Gamekings. Very mild pressure sign on primers and consistent 1" to 1-1/2" 3 shot groups at 200yds for all 3 rifles.
BUT...what's safe for ours may not be for yours. YMMV!

 

[Greyfox]

I have a Cooper 52 and a Savage LRH in 6.5x284. I get 2950 FPS out of them with 59 gr of Retumco, Fed 215, Lapua brass, 140VLD. Seating depth will effect pressure. Work up to this load. Both rifles give best accuracy with .075 off the lands.