That's cheating. :)
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Hornady brass, fed large rifle primers
Attachment 213225
The bits ready for the gunsmith (Greg at Custom Guns) to build my faux 6.5 PRC - its a 6.5x284.
Savage stainless short action from @MMC Barltelin featherweight 1:7.5 twist barrel to finish at a tad over 24" and threaded 14x1- supplied by @camowsm . Accu-Stock was already in hand.
I went 6.5-284 because it's a .473 boltface and I don't really want to go to magnum boltface actions - is for all intents and purposes the same case capacity (and therefore ballistics) as the 6.5 PRC.
Yup, gonna run a "mag length 3.0" 130 or 140 load at about 2800-2900 for its main course and decent barrel life, with a "long load" using 156's (hopefully) as snotty as possible.
Shooting the 156’s from mine. Adg brass, rl26 getting 2990fps from a 24” proof carbon barrel
Got. One out for first shots last night. Factory ammo test only. Both a bit lethargic with the Norma 143 running 2700 and the eldx running 2830 out of a 22 inch barrel. Both shot well enough though with hornady printing some nice groups hovering around 1/2 moa. Pussy cat to shoot, noticeably lighter recoil than my 284.
Will get a load going this week. Have 140 & 147 eldm on hand as well as 140 vld hunters. Might play with the hunters as havnt mucked around with berger much. Will be over rl25 as that's all I could find. https://uploads.tapatalk-cdn.com/202...f164adec34.jpghttps://uploads.tapatalk-cdn.com/202...1af9ced4b5.jpg
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Got mine out for a ladder test today, only looking at speeds and pressure today, no groups shot.
First up was 147 ELD-M and AR 2217 in Norma brass.
58.5 2704 2661
58 2629 2624
57.5 2619 2661
57 2578 2624
56.5 2554 2554
56 2539 2478
55 2510
No pressure at 58.5 but I think it'll be close, might be able to get up to 59.5 or 60 but I don't think it's worth it at the moment.
Next up was 147 ELD-M again but with Superformance, Norma brass again.
52 2515
53 2710
54 2721
55 2766 2777
55.5 2812, heavy bolt lift only shot 1.
56 did not shoot
I was surprised at how quick the speed picked up with this one. Still pretty slow considering but I'm only up to 49 shots down the tube so hopefully will speed up in time. Next I'll see what the groups look like at 55 grains of Superformance and play with seating depth accordingly.
This Norma brass is super soft, I sized them for a firm fit and just chambering them scuffs the case head.
Finalised my load development with my Christensen Arms Mesa Titanium today.
Landed on 56grn of AR2213sc with a ELD-M 147gr loaded to just below magazine length. ADG Brass. 22" Barrel.
2946FPS Average. No pressure signs. Groups around 0.4-0.6" @ 100m.
This load is 1.5gr above the Hornady data (for H4831 - same powder) maximum so use with caution. I reached pressure signs (ejector mark and stiffening bolt lift) around 58grn.
I toyed with the idea of buying some AR2225 or AR2217 but decided to stick with this powder and happy with the velocities and accuracy attained.
That's bloody good @Makros I'm going to send some 147s down range loaded with 2225 in the next few days, hopefully get close to what you're seeing with 2213sc.
Great info fellas , I’ve some retumbo here to try but haven’t yet as getting low on primers .
I managed to get 35 rounds down my 22" tikka on its first outing. It was sitting around 2750fps with good groups using Norma 143gr Bondstrike. Once I get through the factory ammo I'll get some loads done with either 143eldx, 147eldm and 156eol.
Attachment 216065
That Norma seems to shoot very well in most peoples rifles but very slow fps
Had a go with 143eldx in the 22" t3x prc. All test loads from 58gr to 59.5gr grouped ok but with variable velocities.
60gr of 2217 @ 2924fps es 5 sd 2
The rifle is still fairly new with 54 down the tube
Attachment 216607
147 ELD-M and 2225
56.5 2569
57 2583
57.5 2588
58 2599
58.5 2640
59 2677 2710
59.5 2672 2710
60 2732 2743
60.5 2732
I think it'll end up about the same depending on how my brass is after the over pressures from lubricant residue. I have given the rifle a deep clean and will get out and try again with both I think. The reason I'm leaning towards the overpressure coming from the lubricant is that I could see the smears on the side of the cases where I had applied the lube and it wasn't on every round and wasn't consistent with increasing charge weights. I will purchase an endoscope next week so I can check for carbon rings anyway, they sure are cheap enough.
On the plus side, I should have the barrel broken in in no time at all:thumbsup:
Mystery solved, gave my cases a bloody good clean this time round with some isopropyl alcohol and shot 60.5 grains of 2225 with the 147 ELD-M for speeds of 2726, 2726, 2710 and 2726. 3 duplicates! Only that one at 2710 to stretch out the es.
No pressure signs today so could probably go further, already over published max but I've noticed the published max loads for this cartridge are around 5000psi below it's rated pressure max.
Must be 70 down the tube now.
I've got some 143 ELD-X coming so will get around to trying them at some point but for now I've got a good load sorted, next I need to get an animal on the deck.
Got out and shot the 143 ELD-X today with 2217 and I think I'm where I want to be.
Just a ladder test
56 2594
57 2656
58 2699
59 2704
59.5 2754
60 2777
60.5 2789
61 2830
61.5 2873
62 2904
Will load some at seating depths from 2.970 to 2.940 in 0.010 steps at 62 grains.
20 inches, I'm up to about 90 rounds so should speed up a bit soon I'm told :thumbsup:
That's in Norma brass, what speeds are you seeing?
Interesting 60gn 2217 and 142 SMK are at 3142 (Magnetospeed) 28 inch barrel in my 6.5SAUM
Nice mild load brass on 13 loading too.
2225 definitely gives more velocity at over 3200
I would have prefered the PRC but it was not around ...............................
88 Lapua 6.5 cases annealed & ready to be filled with 2217 & 143 ELDX :thumbsup:
Attachment 218306
Are those velocities with the 130 TGK?
I had another go with the prc and had a very consistent "hole in ones" grouping and velocities with 60gr 2217 @ 2925. I also tried Rl26 from 58gr to 59gr working up and max load giving 2960 with very good grouping. Gonna run with 2217 and hide the Rl26 till another day.
Ive had the 120gr CX getting along pretty smartly too. Havent got them to group well yet though. 26" barrel & superformance
Attachment 218338
Blistering! Those 120s seem like they'd be the business.
I went to the range intending to test seating depths with the 143 ELD-X and ended up only shooting one group...
Attachment 218372
Attachment 218373
Pretty happy with that, 2876 average, es of 19 and sd of 8.
Yet to validate at longer range but hopefully do that next week. 85 rounds (ish).
One thing I noted was the super mild recoil with the hardy gen give stealth on the front.
Any of you guys with a 20inch barrel tried the factory 147 Eld-match be interested to know what accuracy an speed was like cheers
@Ardy
I my 6.5prc 18"bartlein barrel factory 147gr eldm was approx 2600fps. Accuracy was approx 0.75moa.
My moderate pressure 147eldm handloads are 2820fps
My 20 inch 260 carbonlight will do 2725fps with 147 eldms. So not much slower than 6.5 prc?