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Re 17 burn rate?
- Thread starter tillroot1
- Start date
W
WalkerTXRanger
Guest
I have read that it falls between H4350 and H4831.
I just shot some of it today in my 6.5x47 w/ a Berger 140 (normally I shoot the 130s and they shoot great), and the velocity was sure there, but the accuracy was not. Hopefully I can tweak the accuracy back to the same I get with the 130s.
I have been thinking about a .260AI, how have you liked it so far, and where did you get dies??
I just shot some of it today in my 6.5x47 w/ a Berger 140 (normally I shoot the 130s and they shoot great), and the velocity was sure there, but the accuracy was not. Hopefully I can tweak the accuracy back to the same I get with the 130s.
I have been thinking about a .260AI, how have you liked it so far, and where did you get dies??
I have read that it falls between H4350 and H4831.
I just shot some of it today in my 6.5x47 w/ a Berger 140 (normally I shoot the 130s and they shoot great), and the velocity was sure there, but the accuracy was not. Hopefully I can tweak the accuracy back to the same I get with the 130s.
I have been thinking about a .260AI, how have you liked it so far, and where did you get dies??
thanks for the reply, its done well, I shoot it at 1000 and 600 and its competitive. my dies are cut off a re-size reamer that I had made at the same time as the finish reamer. I saw a set of Redding custom dies that were for sale on snipershide or 6mmbr not so long ago if you are looking.
Thanks again, Ron Tilley
F
flatlander
Guest
Lynn.....
I loaded one round of Dasher ammo with RL17 this evening. Used a Wolf SRM primer, 35.3grs. of RL17, and a moly'd DTAC 115 seated to jump around .020". Out of a clean, cold 30" Krieger .236" bore 8-twist bbl., it chrono'd 2771fps on an overcast 77*F day. The way I see it, you might get as much as another 40fps once the barrel is fouled with moly, as much as 40fps more velocity on a 90+*F day, and maybe another 60fps with 36grs. of powder, which I think is about as much RL17 as I'd care to try to stuff into a Dasher case. Best case scenario, based on these rough estimates, would be around 2900fps. N550 will beat that easily, and gives good enough accuracy to give cleans with high X-counts on NRA HP targets at 600 & 1000yds. I'm saving the rest of my RL17 for the 6x47Ls & 284 Win.
I loaded one round of Dasher ammo with RL17 this evening. Used a Wolf SRM primer, 35.3grs. of RL17, and a moly'd DTAC 115 seated to jump around .020". Out of a clean, cold 30" Krieger .236" bore 8-twist bbl., it chrono'd 2771fps on an overcast 77*F day. The way I see it, you might get as much as another 40fps once the barrel is fouled with moly, as much as 40fps more velocity on a 90+*F day, and maybe another 60fps with 36grs. of powder, which I think is about as much RL17 as I'd care to try to stuff into a Dasher case. Best case scenario, based on these rough estimates, would be around 2900fps. N550 will beat that easily, and gives good enough accuracy to give cleans with high X-counts on NRA HP targets at 600 & 1000yds. I'm saving the rest of my RL17 for the 6x47Ls & 284 Win.
C
criver600
Guest
Ron
260AI will get you another 50 fps (2850) over a 260 unless you want three firings out of your cases
260AI will get you another 50 fps (2850) over a 260 unless you want three firings out of your cases
260AI will get you another 50 fps (2850) over a 260 unless you want three firings out of your cases
I am getting a little better than that with the 140 grain bullets, I just was looking for some extra info on the new powder and with the 130's instead of the 140's. Thanks, Ron Tilley
J
jerryhm
Guest
JUST for Lynn
RL-17 Testing in a Dasher and a 284 August 8, 2008
Please NOTE; Custom single shot actions were used, others may have pressure problems.
Sacramento 100 yard Chronograph test. Elev = 200’ Hum = 56% Temp = 61 degrees.
Five shot groups
BAT action 6BR imp. (UBL) Sierra 107s, CCI-BR4s, Lapua brass. 30” Krieger barrel
LOAD – POWDER – MV -- ES – SD -- GROUP
33.5 ---- Varget -----2995 --- 20 – 07 --- 0.244” normal S107 load.
33.0 ---- RL-17 -----2771 --- 51 – 19 --- 0.357”
34.0 ---- RL-17 -----2831 --- 05 – 02 --- 0.341”
35.0 ---- RL-17 -----2917 --- 17 – 06 --- 0.328”
35.5 ---- RL-17 -----2947 --- 22 – 08 --- 0.299”
36.0 ---- RL-17 -----2990 --- 26 – 11 --- 0.157”
36.5 ---- RL-17 -----3029 --- 18 – 07 --- 0.560”
37.0 ---- RL-17 -----3051 --- 65 – 25 --- 0.422”
NO pressure sighs at all. Could have gone with more powder, 37 grains is not compressed.
BAT action, 284 (Whitley), Berger 180 VLDs, CC-BR2s, Win. Brass, 30” Krieger barrel
LOAD – POWDER – MV -- ES – SD -- GROUP
54.5 ---- H4831 -----2810 --- 13 – 06 --- 0.368” normal LR load
52.0 ---- RL-17 -----2894 --- 16 – 06 --- 0.940”
52.5 ---- RL-17 -----2911 --- 40 – 15 --- 0.418”
53.0 ---- RL-17 -----2940 --- 22 – 08 --- 0.283”
53.5 ---- RL-17 -----2971 --- 14 – 05 --- 0.515”
Some pressure signs above 53 grains, might be too much in hot weather.
Results in both rifles show a need for fine tuning the RL17 load.
Jerry
RL-17 Testing in a Dasher and a 284 August 8, 2008
Please NOTE; Custom single shot actions were used, others may have pressure problems.
Sacramento 100 yard Chronograph test. Elev = 200’ Hum = 56% Temp = 61 degrees.
Five shot groups
BAT action 6BR imp. (UBL) Sierra 107s, CCI-BR4s, Lapua brass. 30” Krieger barrel
LOAD – POWDER – MV -- ES – SD -- GROUP
33.5 ---- Varget -----2995 --- 20 – 07 --- 0.244” normal S107 load.
33.0 ---- RL-17 -----2771 --- 51 – 19 --- 0.357”
34.0 ---- RL-17 -----2831 --- 05 – 02 --- 0.341”
35.0 ---- RL-17 -----2917 --- 17 – 06 --- 0.328”
35.5 ---- RL-17 -----2947 --- 22 – 08 --- 0.299”
36.0 ---- RL-17 -----2990 --- 26 – 11 --- 0.157”
36.5 ---- RL-17 -----3029 --- 18 – 07 --- 0.560”
37.0 ---- RL-17 -----3051 --- 65 – 25 --- 0.422”
NO pressure sighs at all. Could have gone with more powder, 37 grains is not compressed.
BAT action, 284 (Whitley), Berger 180 VLDs, CC-BR2s, Win. Brass, 30” Krieger barrel
LOAD – POWDER – MV -- ES – SD -- GROUP
54.5 ---- H4831 -----2810 --- 13 – 06 --- 0.368” normal LR load
52.0 ---- RL-17 -----2894 --- 16 – 06 --- 0.940”
52.5 ---- RL-17 -----2911 --- 40 – 15 --- 0.418”
53.0 ---- RL-17 -----2940 --- 22 – 08 --- 0.283”
53.5 ---- RL-17 -----2971 --- 14 – 05 --- 0.515”
Some pressure signs above 53 grains, might be too much in hot weather.
Results in both rifles show a need for fine tuning the RL17 load.
Jerry
F
flatlander
Guest
Jerry,
Thanks for sharing the 284 data - 2800fps is about as fast as I've been able to go with Berger & JLK 180s. Looks like I may have to share my meager supply of RL17 between the 6x47s & 284s - and I just bought another 8lb. jug of H4831...
Thanks for sharing the 284 data - 2800fps is about as fast as I've been able to go with Berger & JLK 180s. Looks like I may have to share my meager supply of RL17 between the 6x47s & 284s - and I just bought another 8lb. jug of H4831...