140gr. SST Hornady in 6.5x284

[schumi]

I've been shooting my 6.5x284s forever at long range prone. I had one made up for hunting hunting. Twist is the same as my prones, 1:8. Sighting it in I used my 142MK Sierras over IMR 4350. It loved them. One tiny bug hole. I switched to the Hornady 140gr. SSTs. I measured the shank on the bullets and it is longer than the Sierra by a .1, so I stated low on my charges. I started with 48gr. of 4350 (with Sierra 142s I use 49.5gr. of 4350 yielding 2960fps). I tried several different charges, and couldn't get a group under 2". Granted it was very windy, but was only shooting 100 yards.

Anyone have any loads with a different powder that worked for them with these bullets?

I'm using:
Winchester 284 necked down to 6.5
Hornady 140gr. SST
Federal GM210 primer

 

[Hopkins]

Same bullet and rate of twist, different cartridge, same result. I can't get them to shoot well between 2700 and 2800 fps. I gave up.

 

[schumi]

Same bullet and rate of twist, different cartridge, same result. I can't get them to shoot well between 2700 and 2800 fps. I gave up.

I was afraid of that. I have a bunch of these bullets now....

 

[ShootDots]

I have no idea why BUT some barrels just don't like certain bullets for whatever reason. I have had 3 / 6.5 x 47 Lapua's.. The first one LOVED everything that went down the bore and LOVED H4350. The other 2 did not care for H4350 and only likes 123-130class bullets. ALL 3 from the same reamer and rifle>>all 1-8 twist. WHY the variance>> I don't know and I doubt anyone could tell you.. It may be that your rifle simply does not like those bullets. My friend uses them in a 7mm-08 and it eats them up like candy!

 

[Hopkins]

I tried the 6.5mm 140gr. SST based on my guns performance with 140 gr. Amaxs. They were in short supply at the time as were the HPBT 140 gr. Hornady.

 

[schumi]

I may have to sell the bullets....

 

[waverly]

8 twist Broughton 26" on Rem 700 long action. 52.5 H4831sc grns. seated into the lands at 2900 shoots 3/4 to 1 inch at 200. It will also shoot under 6 at 600. I haven't shot any further with this rifle. Forgot to mention this is also a 5c barrel.

Works for me. Try H4831sc before you dump the bullets. Like others have said not all barrels like the same bullet, primers, or powder. Also I shoot Fed.210 std primers, but do shoot 52.8 with BR2 in my 6.5-284 1k rifle.

You know the drill start with lower charges and work up.

Regards, Waverly

 

[schumi]

8 twist Broughton 26" on Rem 700 long action. 52.5 H4831sc grns. seated into the lands at 2900 shoots 3/4 to 1 inch at 200. It will also shoot under 6 at 600. I haven't shot any further with this rifle. Forgot to mention this is also a 5c barrel.

Works for me. Try H4831sc before you dump the bullets. Like others have said not all barrels like the same bullet, primers, or powder. Also I shoot Fed.210 std primers, but do shoot 52.8 with BR2 in my 6.5-284 1k rifle.

You know the drill start with lower charges and work up.

Regards, Waverly

Thanks. I bought some H4831SC today. I'll give it a try and post the results when this cold snap breaks.

 

[schumi]

Well, after much research with the 140SSTs, 4831SC shoots very well with 51.7gr. @2960fps. But RL22 with 50.8gr. is a little tighter. All shots touching @2960fps. That's the node this barrel really likes. BUT..... with 53.2gr. I found another one at 3100fps!!! But with very sticky bolt lift and primer cratering. Too hot.

 

[bheadboy]

I could not get them to shoot in my260AI

Bob

 

[CaptainMal]

Shoot .4's at 2840 with that bullet with 47.6 gr. of Rel. 22. in my 26" bbl Krieger 1-8 twist 260 AI.

Have made three deer kills over 500 yards the past two years with it. The bullet works and works well in my combination.