What has been the issues with your ones Tentman
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What has been the issues with your ones Tentman
yes 2500fps is a tad on the slow side...
Tentman that is not so bad...not fantastic...but not so bad.
Neither would shoot - both based on Mauser 98 actions though . . . . the first one was found to have a shot out barrel. The second one was based round a brand new Kreiger barrel, took a long time to get (one of the last jobs done through Din Collings, I think one of the grandsons actually did the work) and bugger me it didn't shoot either. I tried quite a few things but in the end got sick of it. Some time later I put the barrel into a Ruger Precision rifle as a 6.5 Creedmore and it shot lights out, like 0.5 MOA easy.
I wouldn't take to much from either of these examples, as I mentioned other 6.5-06's I have known shot very well.
The reason to try different powders is you'll often find that the sweet spot with one is at a low velocity and if you change powder you'll find another sweet spot at a more attractive velocity. I never take too much notice of the max predicted fps for a powder.
But you knew that already M.D. - I've read your stuff!!
Made a few calls today, RL 26 seems a bit thin on the ground this far south , though the run is coming
H1000 etc seems easier to get
Wonder if a magnum primer would help much?
I have some 2225 to try this weekend it it's not a weather disaster.
funny thing with magnum primers...about HALF of the loading manuals etc will say to use it with the likes of 2213....the other half say std.
I bought a thousand magnum primers cheaply so thats what I use for everything except subs.
With RL26 and the 06 case size, I'd recommend the Federal 215M as the fire starter.
Hmmm - I don't know that I'd buy a can of RL-26 just to "gain something" but if nothing else would shoot it might be worth a try . .
Cartridge : 6.5-06 A-Square
Bullet : .264, 140, Hornady A-MAX 26332
Useable Case Capaci: 61.183 grain H2O = 3.973 cm³
Cartridge O.A.L. L6: 3.340 inch = 84.84 mm
Barrel Length : 23.5 inch = 596.9 mm
Powder : Alliant Reloder-26
Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !
Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms
-20.0 77 46.40 2391 1777 29704 11476 95.9 1.635
-18.0 78 47.56 2454 1873 31842 11802 97.0 1.592
-16.0 80 48.72 2518 1971 34145 12102 97.9 1.549
-14.0 82 49.88 2581 2071 36626 12374 98.7 1.508
-12.0 84 51.04 2644 2174 39304 12616 99.3 1.461
-10.0 86 52.20 2707 2278 42184 12825 99.7 1.412
-08.0 88 53.36 2769 2384 45309 13001 99.9 1.366
-06.0 90 54.52 2831 2491 48685 13141 100.0 1.321
-04.0 92 55.68 2892 2600 52283 13264 100.0 1.279
-02.0 94 56.84 2952 2710 56136 13383 100.0 1.238 ! Near Maximum !
+00.0 96 58.00 3012 2820 60273 13498 100.0 1.198 ! Near Maximum !
+02.0 98 59.16 3071 2932 64718 13608 100.0 1.160 !DANGEROUS LOAD-DO NOT USE!
Does anyone think that I should go higher with the 4831 first
as I said I maxed at book max [Hornady] at 49.4 for very slow but above [ Thanks Tentman] Q/L is telling me 55gn is OK
I'd work up naturally but it is a heck of a leap.
@Mathias, I use 210M, so 215 is that the magnum primer?
Yep magnum primer.
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Your measured velocities seem to be in line with the QL predictions Tentman put up on the 3rd for 140gr bullets with 2213sc/H4831sc. The concern if I understand correctly was more that the readings were jumping around as you went up in small charge increments rather than any reason to believe that the peak pressures were anything other than very mild?
Appropriate burn-rate double-based powders (N560, Re-22, Re-26 etc.) would give you an extra 50-100ft/sec over 2213sc, but given the accuracy potential of 2213sc in your rifle I would be carrying on with development up into the 2850-3000ft/sec range, while looking for a combination of accuracy and lower ES.
Who chambered your rifle and what sort of throat did they give it?? (I never looked at your velocity results till just now) as it sounds like you may have a long freebore. Have you tried seating a bullet out to the lands . . . if so what length did you get??
keep going up slowly...watching for bolt lift issues or marks on brass or flatterned primers..... only YOU will know when you think its getting hot...or drop projectile weight to gain speed.LOL
Well if Mark did the chambering it will be RIGHT, i.e. done precisely and correctly. However its still usefull to know how much freebore it has, he'll know how he throated it even if he didn't discuss it with you . . .
Ok, I'll ask him tonight about the free bore, and I'll go up in single loads At 1/2 a grain each looking a speed and for signs of pressure.
how are you getting on with this project
hows this project coming along
Funny you should bring this up I was just getting stuff sorted from a day out
I friend gave me some AR2225 to try but I couldn't find much data so left it for today just upped the H4831 and along side used a Magnum primer
Results were, all 4831, remember Hornady book max was 49.4 but Tentmans Q/L gave me at least a 55Gn window
Frederal Match 210 CCI Magnum
51gn - 2600 2663
52gn - 2630 2678
53gn - 2706 2753
54gn - 2782 2823
55gn - 2830 2865
So we started off about 60FPS faster using the Magnum, but as the charge got bigger the gap closes till after 5 gns up it is half almost what it was.
I still think there is easily another grain in the Load maybe as there were no visible signs of pressure and no felt signs either.
Cheers.
ok I was going to suggest this earlier but kept mum....
take .30/06 data 7.62mm
take 280 data 7mmand a bit
take 270 data 7mm
take 25/06 data....ummm6.???
look at max charge weight with powder of choice with same projectile weight and you SHOULD be able to pretty well "slot" in side with your cartridge.....
@jakewire have you seen this?
https://www.riflemagazine.com/magazi...133partial.pdf
Cheers @Micky Duck, actually thats what I did, well apart from the Girls gun :) but I wasn't wasn't really that keen as you can see from my first postings. I ended up talking with some folk in the states I've know for along time together with taking advice from here , putting it together and deciding the keep with the H4831 if possible
If Not I'm gonna go H1000, However it looks good at the moment.
I run a 30 06, and now I have another one with a proper barrel length rather than the 22" I'm keen to stretch its legs
And No @Tahr I hadn't, thank you.
yeah the .280 is a bit of a girly type offering...pluury 7mm imposter.... good to hear you are getting this sorted.
What is he difference in case capacity between the 6.5 06 and the 6.5x55 ?
I have zero knowledge of these things , but I’m surprised that the 6.5 06 isn’t a noticeable step up from a good 6.5x55 load .
Well it is mate. My x55's run about 2740 for good accuracy with the 140 amax, the Finn does 120Gr BT's at 2940, no way I'd recommend that to anyone else, so no load details.
The 06 case is already 100+ faster and i haven't finished yet.
I found my x55 tikka prefers 120s as well
Haven't bothered with this in awhile
I ran some more h4831after xmas and the speed jumped waaaaaaay up.
I think I figured out what it was apart from the temperature
It was the first time I'd used resized cases, every other time I just loaded new brass as was just going for speed anyway though early 4831 loads were very accurate.
Loaded 56.6 to 58.5grn s of H1000 tonight. going to give them a whirl on the weekend.
loaded 4 of each in 0.5 increments.
What speed are you getting I'm using 2217 and getting 2790 and not a max load
I'll be shooting again this afternoon.
Is that with your 140gr load?
Greetings Jakewire,
I was chronographing some loads with AR2213SC in the 6.5-06 last week. The rifle is a Remington 721 that was rebarrelled to 6.5-06 in the 1990's. The barrel length is 560 and is fitted with a DPT suppressor. Projectiles are current 140 grain Hornady Interlock. These have a crush length of 84.4 mm and are loaded to 83 mm LOA. Previous loads (not by me) of 55 grains of AR2213 (not SC) expanded the case heads beyond further use with one shot. More recently 52 grains of AR2213SC has been used behind the same projectile without problems. The rifle is not mine but I provide, shall we say, technical support and it has been at my place for the last few weeks to sort out a few problems now accomplished and I thought it would be useful to do a little testing and chronograph a few loads with the following results.
Hodgdon lists a max of 50.3 of AR2213SC behind the 142 grain Sierra HPTBT for 2,795 fps. Hodgdon also lists 49.5 grains of AR2213SC behind the 140 grain Speer Grand Slam. This is a harder projectile so the Sierra load is likely more relevant. As 52 grains of AR2213 was already in use I loaded 50 grains of AR2213SC to check the old and new powder lot speeds. This gave a little over 2,700 fps for both powder lots. Next the current load of 52 grains of AR2213SC was tried which gave 2,780 fps. This is as far as I would be prepared to go with AR2213SC. AR2217 gives a little more velocity in the Hodgdon data but I did not try it.
These speeds look pretty wimpy compared with the data provided by Tentman above which I assume was from Quick Load or similar but from my experience 55 grains of AR2213 ruined cases. AR2213 is only a little faster than AR2213SC. The Hodgdon test barrel is a little tighter than the barrel I am working with and I needed about 1.5 more grains of powder to approach their velocities in my 560 mm barrel. Even the 264 Win Mag barely beats 2,900 fps in pressure tested recent data so I would regard the top loads in the computer data as dangerously hot. Please proceed with caution.
Regards Grandpamac
Didn't shoot, windy as heck here today, saturday morning looks good.
@grandpamac.
yes in my post above I found hornady book max for H4831- ADI 2213 was 49 something. this was simply seated in new Norma 25 06 brass with no other prep
When I tried in june last year down south I went as far as 55grn as even 51 grns was only giving me 2600 and I had 2830 with fed match 210 and 2865 with a cci magnum primer, @ the 55grns
however these same loads in January with F/L sized brass using the Redding dies i ended up with 2912 wityh 55grns and 2970 with 55.6 and a huge ejector mark, somewhat stiff bolt lift and a very flat primer and only about an inch group, previously good 1/2 inch at 2830 as above
So, I have plenty of H4831 to go back to but acquired 2 tubs of H1000 and thought I'd give that a crack starting at a medium load and working up.
@Tentman
If your about and it's not too much trouble could you run H1000 for me please, 26 Inch barrel, 140gr amax
Thanks.
26" 1-8 barrel 53.5 gr adi2217 magnum lr primer hornady 2506 brass im pretty unscientific with oal i do the same for all my rifles except my mil 6.5x55s i just start a projectile in the case then chamber it in the rifle close bolt then remove round put in press with seating die wound out wind down so it touches projectile lower ram wind seater down half a turn reseat bullet and keep dummy round for setting up die in future so i dont go off measurements seems to work in my rifles
Good as , I had to do exactly the same method with a new for me 1640 Husky this morning, 30 06 @ 3.340" Coal wouldn't chamber though it would fit the mag, just, so wound in 1/4 till it did chamber @3.272 then blacked it chambered again, no marks so loaded for development.
Thanks.