Need 6.5x284 Information

[crawler97]

I have a factory savage f-class in 6.5x284 looking for a load using 139 senars and 4831sc. I have tried a few loads from 48.8-52.4 grains not been real happy with any. Thanks for any information.

 

[dennisinaz]

try another powder. I am not sure what you are after. I have recently had great luck with Mag Pro and 140 Amax bullets. I am getting 2975 with a 25" barrel and single digit ES.

Another load is about 46-49 grains of R17 with the same bullet. I suspect that the 139 Lapua would work with this as well. I just don't get the velocity I want with the old standby powders with this 25" barrel. If you have a 30" barrel, you can get 3000 easy with most of the regular powders; 4350, 4831, N160, H1000 et al.

R22 will sometimes make them sing too.

 

[Bob3700]

I am currently shooting the 139 Lapua bullets (coated) with RL 22. Velocity is no problem and accuracy is very good to 1K yds.

H4350 is a standard with 142 SMKs in this caliber so I might give that a try as well.

Bob

 

[dennisinaz]

It has been my experience that 4350 only gives acceptable velocities with 29+ inch barrels (look for 3000-3050 fps) If you have a long barrel you will probably find a great load. R17 and Mag pro will give you about 100-125 fps edge in velocity IF your rifle likes it.

 

[bozo699]

I have a factory savage f-class in 6.5x284 looking for a load using 139 senars and 4831sc. I have tried a few loads from 48.8-52.4 grains not been real happy with any. Thanks for any information.

Crawler,
I shoot 139 Scenars with 52.5 grains of H-4831 ( not sc ) .012 off the lands in a factory f-class Savage with a 30" tube @ 3018 fps it will regularly shoot 8"-10" 10 shot groups @ 1k, it will hold 1/2 minute out to 600 yds and probably would to 1k if I could read the wind better.
Wayne.

 

[dennisinaz]

Wayne- this is exactly what I have seen from my long barrel, 1000 yd BR days. I can't even hit 2900 with 4831 in a 25" barrel.

Headed to the range right now to do some more testing with mag pro and R17

 

[crawler97]

Thanks for all the information I'm going to shoot later to day hope to come up with a load soon. THANKS SCOTT.

 

[bozo699]

Scott,
Try to remember one thing you are shooting a factory rifle, I have a exceptionally good barrel on mine, it cleans as good and better then most of my custom barrels, not all of them are going to be that good. I heard Shilen was making the barrels for that chambering when I bought mine, anyway it shoots awesome IMO. I know team Savage says the rifles there shooting are all factory but I don't believe for a minute that there not getting the best of the best. I got my rifle shooting 1/2"-3/4" at 100 yards with powder charge listed then fine tuned the load with seating depth over a chronograph, Good luck with the load development.
Wayne.

 

[dennisinaz]

I shot some this morning and checked a few things out. My rifle has a 25" Shilen barrel.

Some loads from this morning:
57.3 grains Mag Pro, 284 Win cases, BR2 primer, 140 grain Amax seated to 3.080" 2925 fps avg. 10 fps ES, about .4 MOA.

48.2 grain R-17, W-W cases, BR2, 140 Amax 2980 fps ES was 25. about .5 MOA

50.0 grains R-17, Lapua cases, BR2, 130 Norma VLD, 3025 fps avg with 9 fps ES, .4 MOA

52.2 grains R-17, W-W cases, BR2, 108 Lapua seated to 3.046" 3350 fps.


I also shot my 260AI. I hit 3400 with the `108 Lapuas but it was a warm load. This is with a 22" barrel, I think I can easily run them to 3450 in the 6.5-284 with 4 grains more powder and 3" more barrel. That is a coyote smashing load.

I cooled the barrel with ice water every 2 rounds to keep it uniform.

 

[Dirtfarmer]

In my hunting wt., 26" Krieger, the best powder for accuracy is 52.3 Gr. Vv N165. I'm shooting 140 SST's at 2,950 fps. This rifle on a bench will shoot 4 1/2" at 600 yds. with progressively smaller groups back to teens and twos at a hundred. I got more velocity with RL-17, but not quite the accuracy. With RL-17 at around 48.5 gr. I was getting a solid 3,000 fps with low S.D.'s. and 1/2" groups at 100 yds. At 50 gr, 3,100 fps but showing early pressure signs and the groups opened up to >1" at 100 yds.

I can spot some speed for pin point accuracy. With a turret scope, tight trumps flat, IMHO.

DF

 

[coford]

I shoot a 6.5X284 in a Kreiger 30" barrel. It hits 2955 fps. with 51.5 grains of H4831SC and 142 MK's. I have shot it lots faster but the accuracy seems to fall off. The MK's shoot exstreamly well to 1000 and beyond. I could not get Secnars to shoot nearly as good. I tried IMR4350 and could not get the velocity I wanted or the accuracy with the Secnars. I have a buddy with a Savage F-Class rifle and his results mirror mine.

 

[wbm]

Savage 110 with 26" factory stainless, fluted, varmint contour, barrel.

Winchester 284 Brass
Federal 210M Primer
140g Hornady A-Max OAL=3.10"
46g Reloader 19

This load shoots really well in my Savage.

 

[dennisinaz]

I shoot a 6.5X284 in a Kreiger 30" barrel. It hits 2955 fps. with 51.5 grains of H4831SC and 142 MK's. I have shot it lots faster but the accuracy seems to fall off. The MK's shoot exstreamly well to 1000 and beyond. I could not get Secnars to shoot nearly as good. I tried IMR4350 and could not get the velocity I wanted or the accuracy with the Secnars. I have a buddy with a Savage F-Class rifle and his results mirror mine.

If you are loading 50 grains behind a 140 grain bullet, you are certainly way over the pressure that is safe. I have tried R17 in many chambers and 50 is top with 129 and 130 grain bullets and too much with some bullets. I can get good accuracy at 2930-3000 but the 140s don't like 3100 fps.

 

[archerross]

I shoot a 6.5X284 in a Kreiger 30" barrel. It hits 2955 fps. with 51.5 grains of H4831SC and 142 MK's. I have shot it lots faster but the accuracy seems to fall off. The MK's shoot exstreamly well to 1000 and beyond. I could not get Secnars to shoot nearly as good. I tried IMR4350 and could not get the velocity I wanted or the accuracy with the Secnars. I have a buddy with a Savage F-Class rifle and his results mirror mine.

If you are loading 50 grains behind a 140 grain bullet, you are certainly way over the pressure that is safe. I have tried R17 in many chambers and 50 is top with 129 and 130 grain bullets and too much with some bullets. I can get good accuracy at 2930-3000 but the 140s don't like 3100 fps.

Are you saying that 50+ gr 4831sc is above safe pressures for 142 SMKs? I would agree that 50 gr would be the upper end for RL17 and 140 gr bullets, but I would have to disagree that 50+ of 4831sc is way over safe pressures with 140 gr bullets. At least in my rifle, 50+ works great without any pressure signs.

 

[wbm]

Hodgdon lists 50.3 H4831 as maximum in a 24" barrel with a 142g Sierra HPBT
Sierra Manual V lists 48.2g H4831 as maximum in a 26" barrel with the same bullet.

 

[archerross]

Below is from this websites 6.5-284 Cartridge guide (http://www.accurateshooter.com/cartridge-guides/65x284/). I guess these guys are really pushing their luck with pressures. I won't say how much H4831sc my rifle likes, you might think my rifle will explode! Every rifle has a unique maximum with respect to powder/bullet combinations that can only be found by experimentation. That maximum may not coincide with what you find in the book(s).

6.5-284 Long-Range Load Map
Powder Grains Primer Bullet Velocity Comments
Hodgdon H4831SC 51+ F210m Sierra 142 2950 fps Jason Baney Load
Hodgdon H4831SC 51.0 F210m Sierra 142 2885 fps Froggy’s Tactical Load, 26″ bbl.