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Post by Lee Martin on Dec 15, 2015 23:19:29 GMT -5
Judging by the inquiries over Buffalo Bore JRH there appears to be interest in reamed brass. I went down this very path in 2013 using a straight 0.500” reamer. However this created a ledge that compromised the case. It wasn’t immediate but after three to four firings the transition began to crease. And while none failed, head separation was a concern. This led me to design a reamer that removes enough material to seat 500+ grain bullets without weakening the shell. Below are the dimensions. Note the ends of the 4 degree cuts are slightly radiused:  I don't plan on producing the tool or the cases but thought I’d share the specs. Any grinding shop could modify a 0.500” reamer to the aforementioned in no time. Armed with that and a small lathe it’s easy to convert JRH or S&W brass for long bullets. Just run it in 0.720” and you’re done (0.150” is for the step into the web, 0.570” is for the bullet’s base). -Lee www.singleactions.com"Chasing perfection five shots at a time" |
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Post by Alaskan454 on Dec 18, 2015 20:24:38 GMT -5
Thanks Lee, I can see that coming in handy.
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Post by singleaction on Nov 28, 2023 0:45:31 GMT -5
Has anyone but Lee actually done this? I’m interested in this to perhaps give a little more breathing room in 500 S&W special.
I’d like to hijack this old thread for a minute to get ya’lls opinion on something. I’m having a 5” mid-frame gun made up with a cylinder long enough to accommodate a cartridge overall length of 1.720” with plenty of extra room to allow for crimp jump (The front of the frame wall is being moved forward some). My current mid-frame Blackhawk in 500 S&W Special has a recessed cylinder that is 1.698” long. Cast Performance 440 WFNGC bullets (0.400” nose) run 1.675” OAL, and the max load I was given with the gun is 15gr of 2400 for a tickle over 900 fps from the 5.5” barrel. Max pressure for both guns is 36K psi, which is what CorBon states is the max pressure of their 500 S&W Special ammo.
Montana bullet works 440 WFNGC bullet has a nose length of 0.430”. I would like to have a plain base version of this bullet made up by one of the mold makers. My reasoning (wishful thinking perhaps) is that gaining a little space from reaming brass, plus gaining a little space from the mass-forward bullet, plus moving to a plain bullet base, will all add up to reduce pressure for the 900fps velocity level, and add velocity potential. My question is: how much more velocity might I get? I would like to be able to drive this 440 to 1050fps, but I think I’m being way overly optimistic. What say ya’ll?
I must admit that a lot can be done with a 440 at 900fps, and I may be wasting time and effort on trying to get more. However, I just want what I want and like to see what the limit is, even if I never decide take advantage of it. Thanks!
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Post by bigbore5 on Nov 28, 2023 4:09:21 GMT -5
Whatever you shoot won't know the difference between the two.
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Post by singleaction on Nov 28, 2023 6:26:47 GMT -5
Whatever you shoot won't know the difference between the two. Yup, I think you are right about that, and the water holes I sit on make shots at elk, deer and Black bear between 15 and 50 yard, max, so I really don’t have much to worry about other than being able to place my shot. At this point I need a heck of a lot of trigger time at 900fps to consistently hit vitals past 25 yards, if I’m being honest. In 44 and 45 caliber, I’ve long considered heavy bullets at 1000 to 1050fps most ideal just because so and so gunmaker, or so and so in the gun magazines wrote it. I may need to not let perfect be the enemy of the good here. “One thousand and fifty feet per second” has pretty much become a maxim, in my mind, that I just need to get over I guess. (I still want to see if my new gun can safely get there though😁). |
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tex500
.240 Incinerator
Posts: 35
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Post by tex500 on Nov 28, 2023 8:56:19 GMT -5
Deleted
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Post by messybear on Nov 30, 2023 10:00:35 GMT -5
Whatever you shoot won't know the difference between the two. Yup, I think you are right about that, and the water holes I sit on make shots at elk, deer and Black bear between 15 and 50 yard, max, so I really don’t have much to worry about other than being able to place my shot. At this point I need a heck of a lot of trigger time at 900fps to consistently hit vitals past 25 yards, if I’m being honest. In 44 and 45 caliber, I’ve long considered heavy bullets at 1000 to 1050fps most ideal just because so and so gunmaker, or so and so in the gun magazines wrote it. I may need to not let perfect be the enemy of the good here. “One thousand and fifty feet per second” has pretty much become a maxim, in my mind, that I just need to get over I guess. (I still want to see if my new gun can safely get there though😁). |
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Post by messybear on Nov 30, 2023 10:07:00 GMT -5
Oops I goofed this up.
In thinking back about my early days with the 500 L, I remember shooting some mule deer with a measly load of 231 powder and a 350 gr WFN. 950 fps was the velocity and deer hit with the load just folded up. Those few deer (3 or 4) seemed to be hit harder than by the bigger loads. Maybe the dwell time thing that Linebaugh talked about was at play? I don’t know but that mid frame and short distances might be ideal for such a load? The bullets were very wide WFN’s. Should look to see if I have any left. Just thinking out loud.
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Post by singleaction on Nov 30, 2023 10:23:46 GMT -5
Oops I goofed this up. In thinking back about my early days with the 500 L, I remember shooting some mule deer with a measly load of 231 powder and a 350 gr WFN. 950 fps was the velocity and deer hit with the load just folded up. Those few deer (3 or 4) seemed to be hit harder than by the bigger loads. Maybe the dwell time thing that Linebaugh talked about was at play? I don’t know but that mid frame and short distances might be ideal for such a load? The bullets were very wide WFN’s. Should look to see if I have any left. Just thinking out loud. I don’t know what you goofed up. Can’t argue with your results on game. |
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Post by bigbore5 on Nov 30, 2023 11:04:17 GMT -5
I'm a firm believer in the dwell time effects on game after 40 years of shooting them.
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Post by lar4570 on Nov 30, 2023 14:17:06 GMT -5
This sounds like 500JRH loads. He was asking about 500S&W Special. Shorter case with lower pressure ceiling. Maybe try 4227 with the 440? Feb 13, 2012 at 7:52pm Post OptionsPost by otto on Feb 13, 2012 at 7:52pm Here is Jacks data Bullet Powder Charge Primer Approx Vel Notes 440 gr 231 10.0 WW WLP 950 FPS 440 gr 296 29.5 CCI 350 1350FPS Accurate 400 gr 296 31.5 CCI 350 ?? Accurate 275 gr 296 33.5 CCI 350 1675FPS Destructive Barnes Pistol x This was posted on this forum. I do not remember the charge but AA 11FS can also be used. Jim Tertin uses it with the 400gr bullet. My BFR is acurate enough with the 440gr bullets. I used the H110 powder. At fifty yds my 5.5 barrel produced a 2" group offhand. I do have a Ultra-Dot on it.Here is a post by whitworth Feb 17, 2012 at 3:11pm likePost OptionsPost by whitworth on Feb 17, 2012 at 3:11pm subsonic Avatar Feb 17, 2012 at 12:46pm subsonic said: I one that was pushing a 440 @ 1600fps! Not something I would suggest repeating.... 29.5 grains of 296 behind a 440 is the most accurate load I have tested -- a 3-shot 1/4-inch group at 50 yards from that one. That's a hard load to beat! Max Prasac Semper Fidelis! "Building Carpal Tunnel one round at a time" The Gun Digest Book of Hunting Revolvers: youtu.be/zKJbjjPaNUE BIG IRON: www.youtube.com/watch?v=L6aXjMH5C30bigbores 375 Atomic *** This Thread was on this forum and can be found with a search or Google the 500JRH loads. |
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tex500
.240 Incinerator
Posts: 35
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Post by tex500 on Nov 30, 2023 20:29:00 GMT -5
Yep my goofup. I didn't read close or pay attention. It needs to be deleted
Tex
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