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217gr RN Lead with gas checks

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airforcediver View Drop Down
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    Posted: June 12 2013 at 1:36pm
Hey Guys

I know I've been AWOL for a quite a while, but I've been super busy with work and life. I have been shooting a fair bit, especially with my newest toy however that's another story.

I ran into a buddy of mine the other day that retire from the military and has started a small business making bullets. He tossed me a couple 217gr gas checked RNs well 100 of them. I have no load data for these puppies but am interested in loading them up to smash milk jugs with them while my new toy cools off.

He said they are working pretty slick out of his Ruger No1 in 303. and wanted me to try them in my hunting rig.

Anybody got a starting point? I never thought to ask him what his load was, but I also know he loads that Ruger pretty hot and she takes it well

     AFD
If all else fails call in a MOAB and call it a day
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Shamu Quote  Post ReplyReply Direct Link To This Post Posted: June 12 2013 at 9:53pm
From the Lyman manual:
* Slightly different bullet, but hard cast though. Lyman #311284 210 Gr RN
Powder..........start...........velocity..........max..........velocity
Red Dot.........10.0...........1245.............12.5..........1415
700X..............9.0............1165.............12.0..........1375
Green Dot.......9.5............1190.............13.0..........1425
PB.................9.5.............1320.............12.0..........1310
Unique...........10.0...........1210.............13.5..........1450
SR-7625.........10.0..........1170..............12.0..........1300
 
All the usual cautions apply, start low work up blah, blah, blah.  
Don't shoot till you see the whites of their thighs. (Unofficial motto of the Royal Air Force)
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airforcediver View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote airforcediver Quote  Post ReplyReply Direct Link To This Post Posted: June 13 2013 at 3:38am
Thanks Shamu, I managed to find a a bit of jacketed info lastnight, but have non of the powders the recipes called for. I will look these over and see what I can come up with.

      AFD
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Shamu Quote  Post ReplyReply Direct Link To This Post Posted: June 13 2013 at 5:38am
Most of them are shottie/pistol powders.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote airforcediver Quote  Post ReplyReply Direct Link To This Post Posted: June 13 2013 at 11:01am
Yea of the recipes you listed I got Unique and Green dot, the LEE data I found was pretty much accurate and Hodgon and that was it.

     AFD
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 303Guy Quote  Post ReplyReply Direct Link To This Post Posted: June 14 2013 at 8:09am
You can use progressive ball powders too.  W748 is one.  I've used Varget with heavy cast with good results.  Slower powders that fill the case are good too but obviously your minimum velocity is going to be higher than with fast pistol powders.  A good middle of the road, medium pistol powder to use is H4227 (or any of the 4227's).

I used 30 grs Varget under a 243 gr cast bullet.  Quite a warm load that and not necessary but I didn't wan't to go too low because the powder needs enough pressure to burn properly.  A powder positioner is advisable. I use Dacron - just a ½ to ¾ gr tuft, fluffed out to fill the space is all that's needed.  I use Dacron whether needed or not just to keep spilling the powder if the cartridge gets de-bulleted.

Slower powder cast bullet loads don't seem to appear in loading manuals for some reason, perhaps because the general concept with cast is lower velocity but in reality 1700 to 1900 fps is a good do-able range with cast, depending on the rifle twist rate.

Just a warning - Some slow powders and apparently some medium pistol powders can detonate if there is too much free space in the case.  Varget is not one of them apparently.  I am under the impression that it is stick powders that do that - not sure.  The medium pistol powder in question is 4227 but I'm not sure of the circumstances and the possibility of a double charge being the cause cannot be ruled out.  It's that double charge thing that leans me away from faster powders.  Double charge or no charge - same effect.  The primer pushes the bullet into the throat and the next round chambered gets the bullet pushed back into the case resulting in destructively high pressure!  You'd think you'd pick up a round that doesn't fire but you don't.  Reason is you just assume, in the heat of the moment, that you've forgotten to reload - the case looks just like a fired one - so you reload and fire.  How would I know that?  I was saved by the fact that I was using a case filling powder and the next round wouldn't accept the bullet being pushed back and so wouldn't let the round be chambered.  And yes, the bullets can get pushed back in the heat of the moment.  It's to do with Murphy's First Law - if anything can go wrong, it will! Disapprove
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