6.5 Creedmoor Load Suggestions
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Tikka CTR yummie
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What load of RS62 do you suggest for LR cases in Creedmore 6.5...usual caveat
Tikka CTR yummie
Well-Known Member
Thank you for your reply
ChesterP
Well-Known Member
Only just picked this up...sorry for the several months late response!
Data suggested for a col of 71mm/2.795" OAL (123 Scenar) and 71.5mm/2.815" (139scenar and 140/142 heavies) but this will also depend on your chamber dimensions and jump to the lands. I have my best results with the 140s loaded at 15 thou off the lands. Depending on brass used this allows for a useable case capacity of between 48.5 and 49.5gr H20, perhaps a little more:
I would back off from my srp load data by 1.5gr if using LRP brass so if using the 139 Scenar, start at 38.5 to 39gr and don't load above 43gr...that's getting up to high pressure loads with this powder in LRP brass. I would also recommend
The sweet spot should be between 42 and 43gr in LRP brass for around 2700 to 2800fps with that bullet and sub half inch groups.
for the 123 Scenar I would suggest a start load of 39 and a max load of 43.5gr, checking pressures on the way up.
For the longer walled heavies from Hornady including the ELD and SST you should start lower than for the 139. I would start at 37.5 to 38gr with LRP brass and work up to 42gr. That should get you a decent accuracy node at around 2600 to 2650fps near the top end.
Primers in LRP brass that seem to work well with Lapua brass with RS62 include CCI200, Murom large rifle and Federal 210. In SRP Murom KVB-223M, CCI 450 and Federal 205M are the ones to use. Do not use thinner cup thickness small rifle primers such as the CCI 400s, Federal 200's, Murom KVB223 or Remi 6 1/2's. The high pressures could result in blown primers at the upper end of the load ladders as the thinner cups are not recommended, only magnum types (in the case of Murom, their 223M appears to be the same primer charge but using a thicker cup). I have had standard KVB223s blow when used in high pressure .223 loadings so the same thing applies there....using the thicker cups may prevent a gas cut bolt face or worse!)
Tikka CTR yummie
Well-Known Member
Thanks for that. Good info. Do you know of any loads with Rel 17 and 140 elds in 6.5 Creed.
paul o'
Well-Known Member
Now the IMR4451 is in the UK I am running tests with the 147 eld m for over 1200y , my ladders are showing the powder is as good as imr 4350 with a 41.4 grain load @2.825 coal sub 1/2 moa without much effort and soft to shoot . I was use'g R16 with very good results for the 140 gr eld m .
Tikka CTR yummie
Well-Known Member
Am I correct in thinking that the new Rel 17 is RS60 rebadged? If that is right, then what would be a good load for 2700fps with 140 eld and 142 Sierra? Usual caveats.
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ChesterP
Well-Known Member
I would caution against RS 60 which is RL17, or it's manufacturer name, Nitrochemie Ei-N145 . It has a reputation for destroying barrels in quick order which is why most use the single base RS62 which is much kinder on the barrel.
The two most obvious choices now that we have the REACH compliant Enduron IMR4451 is either that or the RS62. Both seem ideal matches with 6.5CM. The two obvious issues with Enduron IMR4451 is firstly cost at around £55 per 1lb tub and secondly that it is amongst the double base class of Enduron range powders produced I think by General Dynamics, the data sheet being the clue: https://imrpowder.com/wp-content/uploads/2017/02/double-base-enduron-canada.pdf
Personally of all currently available powders, moderate loads using RS62 is likely to be one of the kinder propellants which covers the wide gambit of projectiles for the 6.5 class, with perhaps N150 being a good match for the lighter weights.
Reloader 16 is about as close as I think a powder has come to H4350 but not sure if that is currently available to us? I think that that is also one of Nitrochemie's infused Ei grain powders, and I know plenty of people shooting stiffish loads with that and other similarly infused powders that are wearing barrels out pretty rapidly.
I will be going back over to LR brass when I shoot out my current crop of cases but I fear by this time, barrel wear on my 6.5 could be advanced. Now that case quality has improved over the initial limited choice which was predominately poor quality Hornady with the like of Starline and Peterson brass as well as LR Lapua, it means no real need for the SR cases. You could say that the only case (ahem) for those cases is that in BR circles they still rate them as giving better SD/ES figures. I've not personally compared what I'm getting against any LR variants so cannot comment on that from my own loadings.
The problem I think with all of these infused single base, which used hottish can deliver pretty high energy/temperatures as with standard double base NG propellants. Couple that to SRP brass tending to hide over pressure much better than LRP brass so I'm sure many are running very hot loads without realising it in 6.5CM because the normal primer tell tales wont be there until long after hard swipe or ejector marks appear on the brass, and repeated loads that high with these powders will destroy barrels in quick time.
The two most obvious choices now that we have the REACH compliant Enduron IMR4451 is either that or the RS62. Both seem ideal matches with 6.5CM. The two obvious issues with Enduron IMR4451 is firstly cost at around £55 per 1lb tub and secondly that it is amongst the double base class of Enduron range powders produced I think by General Dynamics, the data sheet being the clue: https://imrpowder.com/wp-content/uploads/2017/02/double-base-enduron-canada.pdf
Personally of all currently available powders, moderate loads using RS62 is likely to be one of the kinder propellants which covers the wide gambit of projectiles for the 6.5 class, with perhaps N150 being a good match for the lighter weights.
Reloader 16 is about as close as I think a powder has come to H4350 but not sure if that is currently available to us? I think that that is also one of Nitrochemie's infused Ei grain powders, and I know plenty of people shooting stiffish loads with that and other similarly infused powders that are wearing barrels out pretty rapidly.
I will be going back over to LR brass when I shoot out my current crop of cases but I fear by this time, barrel wear on my 6.5 could be advanced. Now that case quality has improved over the initial limited choice which was predominately poor quality Hornady with the like of Starline and Peterson brass as well as LR Lapua, it means no real need for the SR cases. You could say that the only case (ahem) for those cases is that in BR circles they still rate them as giving better SD/ES figures. I've not personally compared what I'm getting against any LR variants so cannot comment on that from my own loadings.
The problem I think with all of these infused single base, which used hottish can deliver pretty high energy/temperatures as with standard double base NG propellants. Couple that to SRP brass tending to hide over pressure much better than LRP brass so I'm sure many are running very hot loads without realising it in 6.5CM because the normal primer tell tales wont be there until long after hard swipe or ejector marks appear on the brass, and repeated loads that high with these powders will destroy barrels in quick time.
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ChesterP
Well-Known Member
That's encouraging news Paul. I had read good things about this Enduron powder from those using it in the States who say much the same as you, but as my post above, whilst end results might appeal to the match shooter, they may be changing barrels quicker than they expect if chasing MV!
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Tikka CTR yummie
Well-Known Member
Thanks for your reply. I'll have to change the powder order. OOOps, I hope it doesn't cause problems...lol Just thought, I will be keeping to 2700 and below with 140s. Does that change anything?
paul o'
Well-Known Member
Yes mine is a big fat barrel Sab MMR running 27+plus a tad fps and iam getting it for £42 per tub retail , so whoever is charging £50 is a robbing Bar'd , i don't chase the fps can't see the point in it feller if a lower value is giving me all but the same results .
I have rs60 and 62 and r16 now for sale if anyone wishes it close to me .
I have rs60 and 62 and r16 now for sale if anyone wishes it close to me .
Tikka CTR yummie
Well-Known Member
Would RS60/Rel 17 badly wear the barrel at 2700 fps approx? That isn't particularly high speed.
Tikka CTR yummie
Well-Known Member
Would RS60/Rel 17 badly wear the barrel at 2700 fps approx? That isn't particularly high speed.
ChesterP
Well-Known Member
That's good price and on par with RS/Vhit. I was looking at York guns pricing. It was the first one that came up when I looked for a retailer. Dauntsey are closest to me and I now see that they offer it at £47/lb.
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