Brillo Posted January 22, 2016 Report Share Posted January 22, 2016 I've started load development for my 6.5 Creedmoor using H4350 as this seems to be the preferred powder, but I recall a post on here where RS62 was mentioned as a good option. QuickLOAD predicts very good results showing slightly higher MVs at similar pressures. Have any Creedmoor shooters tried it yet and if so how does it perform in reality? Link to comment Share on other sites More sharing options...
nicky.223 Posted January 29, 2016 Report Share Posted January 29, 2016 I haven't tried the powder your using in your creedmoor but I'm using ramshot hunter and I'm very impressed with that I'm using 140 grn amax with 41.5 grain and groups great Link to comment Share on other sites More sharing options...
triman Posted March 27, 2016 Report Share Posted March 27, 2016 I've started load development for my 6.5 Creedmoor using H4350 as this seems to be the preferred powder, but I recall a post on here where RS62 was mentioned as a good option. QuickLOAD predicts very good results showing slightly higher MVs at similar pressures. Have any Creedmoor shooters tried it yet and if so how does it perform in reality? Brillo, I've run up some test loads for my 6.5CM with RS62 with some promising results using Hornady brass and 140gr AMAX Started off at 41gr RS62 0.685 inch group 42gr RS62 0.850 inch group 42.5 RS62 0.650 inch group 43.0 RS62 0.306 inch group 43.5 RS62 0.156 inch group 44.0 RS62 0.373 inch group COAL 2.835 CBTO 2.219 20 thous off lands So I am working on the 43.5 load, will tweek this, no pressure signs, no primer issues, no extractor marks and concentricity ok too. 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 76 34.80 2208 1515 27830 8048 93.3 1.689 -18.0 78 35.67 2262 1591 29701 8284 94.4 1.648 -16.0 80 36.54 2317 1668 31701 8511 95.4 1.607 -14.0 81 37.41 2371 1747 33842 8725 96.3 1.568 -12.0 83 38.28 2425 1828 36135 8927 97.2 1.529 -10.0 85 39.15 2479 1910 38582 9115 97.9 1.484 -08.0 87 40.02 2533 1994 41168 9289 98.5 1.441 -06.0 89 40.89 2586 2079 43910 9447 99.0 1.398 -04.0 91 41.76 2639 2166 46833 9589 99.4 1.358 -02.0 93 42.63 2692 2253 49951 9714 99.7 1.318 +00.0 95 43.50 2745 2342 53277 9822 99.9 1.281 +02.0 97 44.37 2797 2431 56827 9911 100.0 1.244 ! Near Maximum ! +04.0 99 45.24 2848 2522 60620 9985 100.0 1.209 ! Near Maximum ! +06.0 100 46.11 2899 2613 64675 10054 100.0 1.175 !DANGEROUS LOAD-DO NOT USE! +08.0 102 46.98 2950 2705 69014 10121 100.0 1.143 !DANGEROUS LOAD-DO NOT USE! +10.0 104 47.85 3000 2797 73663 10184 100.0 1.111 !DANGEROUS LOAD-DO NOT USE! I'm also using H4350 and the best weights so far are 41.5 / 41.9 / 42.0gr 41.5gr 0.493 inch group - chrono at 2600fps 41.9gr 0.369 inch group - chrono at 2625fps 42.0gr 0.273 inch group Link to comment Share on other sites More sharing options...
John MH Posted March 27, 2016 Report Share Posted March 27, 2016 Don't discount N160, usually readily available anywhere and works well in .260 so should be thereabouts for the Creedmoor. N160 Data Link to comment Share on other sites More sharing options...
Sherlock Posted March 27, 2016 Report Share Posted March 27, 2016 Really interested in this thread - I have a Creedmore waiting for me once FAC variation is complete. I also have an unopened tub of Vit 160 - It would be great if this was the powder of choice for 140 grn range of pills. ATB S Link to comment Share on other sites More sharing options...
Brillo Posted March 28, 2016 Author Report Share Posted March 28, 2016 Thanks for the responses so far. In the tests I've carried out with 140 grain A-Max, 142 grain SMK and 139 grain Lapua bullets, the best powder to date is definitely H4350 and the sweet spot for all these bullets is around 42.2 grains. This gives a velocity of around 2840 fps from my Sassen 28" barrel. I did try 123 grain SMKs and also used RL17(RS60) which gave very high MVs. The 123 grain SMK gave good groups with speeds around 3000 fps, but I don't want to be there. And, although RL17 produced higher MV than H4350 I could not get the nice tight groups H4350 gave me. Baldie (Dave) on here has used N150 successfully so I'm going to try that with the bullet combo he used (Scenar 123 grains) and if I can get small amount of RS 62 to try I'll give the loads that triman has used. N160 seems a tad slow for the Creedmoor even though it's recommended for the .260, and QuickLOAD shows low MVs for it, but a mate uses it in his .284 so I might beg a small amount to try. As the man once said "don't knock it if you haven't tried it." Link to comment Share on other sites More sharing options...
John MH Posted March 28, 2016 Report Share Posted March 28, 2016 Remember speed is not everything. Link to comment Share on other sites More sharing options...
Brillo Posted March 28, 2016 Author Report Share Posted March 28, 2016 I couldn't agree more John. That's why I want to try a small quantity. The qualifier is that all the tests with RL17 with all the the bullets mentioned in my previous post produced much higher MVs but poorer groups. The predicted MVs for N160 are around 2720 fps but it will be interesting to see the real world speeds compared to precision. Link to comment Share on other sites More sharing options...
activeviii Posted March 28, 2016 Report Share Posted March 28, 2016 N150 was to slow. It grouped OK but felt I could have done better with powders Try h414. All the data is saying it will give as good, if not better than the h4350. 100% burn at max load and 2870fps were the h4350 was 96.8% with 2750fps Link to comment Share on other sites More sharing options...
phaedra1106uk Posted March 28, 2016 Report Share Posted March 28, 2016 I'm using Lovex S062.0 (got several Kg very cheap!) I already use it in my 260 (36gr 140gr bullet) and 308 (41gr 168gr bullet) with great results. A while back I asked Laurie about it and he recommended a starting load of 36-37gr using the same Nosler 140gr Custom Competition bullet, having had a chance to chronograph it these are the results, 36gr - 2535fps 37gr - 2583fps 38gr - 2674fps 39gr - 2724fps I worked up from 36gr in .5gr increments, at 39gr there are no signs of pressure that I can observe. I'm hoping to be able to get to a 100m tunnel range and spend some time comparing group sizes and also adjust the seating depth. Lovex S062.0 is slightly faster than Viht N140, roughly the same as their N540 and Alliants Reloader 15. Link to comment Share on other sites More sharing options...
Brillo Posted March 29, 2016 Author Report Share Posted March 29, 2016 Today I discovered that QuickLoad has a facility to give you powder performance comparisons for a given bullet. I found it by accident when looking for another option. Interestingly it showed that RS 70 is a good choice for the Lapua Scenar 139 bullet in terms of fill ratio, p-max and velocity. When you then run that separately you can then get good start and safe maximum loads. This is good for me because I have some of that powder for my .284. I've loaded some test loads with N150 (although it is supposed to give quite lowish velocities, if it's accurate up to 600 yards that's all I'm trying to achieve) and some with RS 70. I'll post the outcome as soon as I get a chance to shoot them. Link to comment Share on other sites More sharing options...
Swarovski1 Posted April 1, 2016 Report Share Posted April 1, 2016 N150 was to slow. It grouped OK but felt I could have done better with powders Try h414. All the data is saying it will give as good, if not better than the h4350. 100% burn at max load and 2870fps were the h4350 was 96.8% with 2750fps what powder grainage was stated for maxloaded 414....? Link to comment Share on other sites More sharing options...
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