I wish you luck Ben. I had an 8.5 twist 5R krieger chambered in shehane that was about as useful at 1000yds as a 12G shotgun shooting #9 shot. Now using 1:9 twist maddco's and the first of them was fantastic shooting 180 hybrids just over 2800fps with RL19. It will be installed on my new action at 28 inches when the action gets here. I have another sitting ready to have chambered at 30 inches in shehane as well (plus two 6mm barrels as dashers). H4350 will be the powder used first as I have 6kg of it, RL powders are not available here now and I have maybe half a pound left max. Looking forward to getting back into shooting again after not having a comp gun for 6 months.
284 win, and h4831 sc
- Thread starter C. Collins
- Start date
BY1983 said:
6 MONTHS! I would be in vapor-lock! I have a friend who lives in the northern New York area where winter shuts them off for 6 months! It is very difficult for them to make great gains because they can't shoot all year. I am very fortunate to live in Texas where we do shoot all year. You will be back on track soon! Good luck my friend!
Keith Glasscock
Gold $$ Contributor
JamesnTN said:
I fought the same thing in my 284. With H4831SC and HBN coated bullets, I was getting extremely slow velocities. I ran as high as 59.5 grains of powder (case full). The velocity was finally up - 2975, but the accuracy wasn't what I was looking for. Eliminating HBN didn't help. I eventually changed powder and now have the easiest cartridge I've ever tuned.
Busdriver said:
What powder did you change to? I'm more about the accuracy over extreme velocities but I would like to find a happy medium. Currently my 284 Shehane is shooting on avg 1.5" at 500 yards. I know this isn't a 500 yard cartridge but that's where I do my final testing once I get my loads worked up. I've shot only once at 1000 and it faired well. I've since changed from a 215m primer to a BR 2 primer and the groups actually shrunk. I've not tested for consistency yet mainly due to the 600 yard season is here and I've been tuning get my 6 Dasher barrel on this action. BTW I'm also using HBN I don't think that's hurting me in the velocity as I do have more case capacity to use if I want the rifle just seems to like where it's shooting right now.
I did try RL-17 on one shot and gave that up instantly I blew a primer out of the case at 55 grains. So way too hot and I chose that starting load due to a friend 284 shooting at 55.5 grains. So I figured or thought I'd be safe starting there.
1shot said:
It should work GREAT! But it is too dirty for extended strings of fire. In F-Open you will have 60 shots for record PLUS sighters. This may be too many shots, especially towards match 3. For hunting it is excellent and possibly even BenchRest competition, you could get by with it. I don't know, I do not shoot BenchRest. There is little doubt it would be great for just accuracy, in some, if not most rifles.
Soooo..........some h4831sc is fast some is slow, h4350 is alright, but it's best to use h4831, around 2800 fps is the goal, and be happy when you get there. Does that sound about right?
James:
I was running 2951 with 3 and under ES on my Shehane with H4831SC. I have also had one slow barrel. As you know as a very established and record holding shooter, slow barrels happen -- mine was down about 100 fps and was not accurate. With 345 rounds down the tube, it came off. The next barrel was a National Record setter in the prone at 1000 yards. I was running just a little less charge than your Shehane. I found H4350 to be very accurate as well but to slow to get the best out of my Shehane.
Jim
I was running 2951 with 3 and under ES on my Shehane with H4831SC. I have also had one slow barrel. As you know as a very established and record holding shooter, slow barrels happen -- mine was down about 100 fps and was not accurate. With 345 rounds down the tube, it came off. The next barrel was a National Record setter in the prone at 1000 yards. I was running just a little less charge than your Shehane. I found H4350 to be very accurate as well but to slow to get the best out of my Shehane.
Jim
Chris:
As an aside, the 210 is a very good primer, but it will not hold up to what the harder cup primers will give you. The "Russian" primers and CCI will give you the accuracy without the primer problems that you will get with the 205. Also, a small primer pin will not only enhance your accuracy, but it will allow you to establish an accurate match load at a higher node.
Just a couple of little things that make a big difference.
Regards,
Jim
As an aside, the 210 is a very good primer, but it will not hold up to what the harder cup primers will give you. The "Russian" primers and CCI will give you the accuracy without the primer problems that you will get with the 205. Also, a small primer pin will not only enhance your accuracy, but it will allow you to establish an accurate match load at a higher node.
Just a couple of little things that make a big difference.
Regards,
Jim
Keith Glasscock
Gold $$ Contributor
JamesnTN said:
I went to H4350 on the suggestion of a friend. I've backed down to 2800 fps and have the easiest time keeping it tuned. At first, I ran it with HBN, but found no benefit to it. Darn thing just shoots.
Straight 284, .218 freebore
What temperature is everyone shooting in?
Shoot Dots, our paths cross once again. I've been on again, off again with load development due to Mother Nature. I will tell you that after four rounds the bbl. it just quit holding copper and and the borescope made the bore look like the color of the inside of a case that has been through a dry tumbler. Very light grey and patched clean with 1 patch of Butches, 2 dry and 1 more of Break clean. When I move to extended strings of fire, that will tell me if it fouls quickly or not. I will keep all advised as the testing/FF continues.
Lloyd
Lloyd
What does everyone find for an increase in temperature? For example if the temperature was 45 and the rifle shot about 2670 fps and then the temp. is low 60's should I see and increase of about 30 - 40 fps? Thanks
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