Printable View
Anyone experimented with this combination? Ran a powder charge ladder for shits & giggles this sunday just gone & got some rather surprising results that i did not expect. Makes me wonder why i bother having a 6.5 PRC in the safe. Either that or this batch of lapua brass is way tougher than the last & im overpressure although the primers say otherwise.
What sort of velocitys & accuracy are you guys seeing with this combination?
I was getting 2750 with my 18” gaymoore reason why I don’t have a prc anymore and know of other getting over 2850 in there’s
Sent from my iPhone using Tapatalk
With 143 eldx & superformance? did you try push it any harder?
Mine was with r16 and was happy with 2750 25/08imp gets good results with his one with r26 and Superformance
Sent from my iPhone using Tapatalk
Cool. im hoping @25/08 IMP may chip in with his thoughts.
For some context - hornady book max is 44.7gr ~ 2800fps in a 24" bbl & hodgdon is 45.8gr for 2800fps. My rifle is a 24" 1/8 Tikka & i ran a ladder all the way up to 48.5gr which gave an average of 2971fps, very faint swipe on the brass at that, bolt still nice to lift. Way above and beyond the suggested book max for both charge and suggested speed yet the brass is suggesting things are fine at 48gr & 2950fps. Shot .4 moa at this too.
Im a bit baffled because 1 - its way above and beyond what it should be able to do, and 2 - its going faster than my 6.5 PRC current load with the same projectile (albeit the prc load isnt overly greedy and is with 2217).
Yeh, I believe we’re at 2812 with Superformance in my 18” 260, no signs of pressure.
Yours is up there but if your reading the signs then possibly ok? I’d be happy to be below where I’m at with these 143’s as they are a great killer and accurate.
Sent from my iPhone using Tapatalk
That's good going. My old 6.5prc was 2990 with 147 eldm and superformance. Was shooting 0.3 moa all day
Yeah, i have no intention of actually running this load as ill be running 97gr hammers with this rifle. Just loaded some up out of interest to see how they did compared to my old 18" creedmoor and got quite a shock.
Hi I have run Hodgdon superproformance in the Creedmoor and .260 it's a bloody good powder.Quote:
Originally Posted by 6.5 CRD
I'm getting 2810fps with the 143 ELDX in Laupa SRP cases and same speed in Danny's Tikka .260 with same combo
Sent from my CPH2145 using Tapatalk
What length barrel is that @25/08 IMP?
@Pommy thats super interesting. I had a feeling it must be overpressure for it to be doing what its doing. Interestingly i have just gone through the brass from the weekend, Faintest of swipe on the 48.5gr load, i just cleaned measured sized & re primed them & the primer pockets are still nice and tight. Worth noting in my last creedmoor which was a tikka aswell but with a different batch of lapua brass, i didnt get anywhere near this powder charge before seeing pressure, looking through my old notes just on 46.5gr was a stiff bolt & ejector swipe. Wonder if theres some variance in the strength of brass batch to batch making it harder to use the brass as a sign of being overpressure?
Yep it's a good combination and all I use as it works so well. Superformance is a bit heat sensitive so if you are running fairly hot just be a bit aware on a hot day. I think mine's 2840 out of a 19in Ruger American predator. Just sighted in with a new scope a couple of months ago with 8 rounds into about a 15 to 20mm red dot so the combo works well.Quote:
Originally Posted by 6.5 CRD
My Creedmoor is 20" and the .260 18" I'm also loading RL 26 for the same fpsQuote:
Originally Posted by 6.5 CRD
Sent from my CPH2145 using Tapatalk
Dunno mate. But signs on brass are the last resort method of inferring pressure for exactly this reason.
Pressure signs highlight what the weakest link is and you know that if you push it, that's probably gonna be your first point of failure. But it doesn't give you a reliable indicator of what actual pressure this is happening at.
Anyway, your PRC will deliver that kinda performance without wringing the piss out of it - with a cooler burning, temp stable extruded powder.
Well i have come to the conclusion this brass must be alot tougher than the last batch of lapua brass i used. Primers werent overly flat either so the combination of that & the brass appearing fine definately led me astray, Certainly a wake up call. Spent some time yesterday and this morning with GRT learning it properly & interestingly the suggested data from GRT lines up perfectly with what i saw with my previous creedmoor. With my last creed which was 18" , 46.5gr was 2642fps & gave slightly stiff bolt/swipe. GRT shows 46.5gr to be right on the pressure limit & 2637fps in the 18" barrel so right on the money.
