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Posted by: foxhunterbubba 05/19/2002, 02:10:42 |
40V
_______-205 @ 3625 = RM or FH-120 PD-8 /221FBI 21 RL 7
fhb
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| headspace/17 M IV question |  | | |
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Posted by: alan in ga 05/19/2002, 10:10:38 |
I'm fixin(as we say in the south) to chamber a 17 M IV. What do you use for a headspace guage if no guage is at hand? I have used factory cases for headspace indication (feel with all cases-which is usually a few thousanths too tight but works). If you push the shoulder back on a M IV, how does one headspace a new chamber, or is a guage a 'must'? thanks,,(I think I might have already answered my own question!) |
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Posted by: Alex M. Clarke ® 05/19/2002, 11:16:39 Author Profile |
Alan: The major problem with the 17M4 is that the "headspace" on the reamers used by the several companies supplying 17M4's varies. Tom Kelley tells of his Bullberry being as much as 20 thou shorter than his Cooper. Be glad to send you a case from my Cooper or my Rampro if you'd like. Fortunately, my Coopers and Rampros are within about 5 thou of each other. Unfortunately, my form/trim dies are off by as much as 15 thou. Had some interesting times prior to deciding how to do it correctly. Alex |
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Posted by: JD ® 05/19/2002, 17:25:38 Author Profile |
The problem with the MK4 is in the dies, Redding does not have there dies cut right, RCBS has the right dies specs,.I have sold thousands of formed MK4 brass made with RCBS form and FL dies and NEVER had any trouble with them, all fit the chambers of many guns Al if you need anything drop me an e-mail, I have a MK Bullberry Encore, I can send you FL case or fired case, what ever you want with BullBerry barrels having a tight chamber you may be good to go by a Fired case JD |
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| JD, a question for you. | | ||
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Posted by: GeorgeS ® 05/20/2002, 12:02:15 Author Profile |
In what way does Redding have their dies cut incorrectly? George |
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Posted by: JD ® 05/21/2002, 08:44:31 Author Profile |
Everyone I have talked to that used Redding form dies have troble with them fitting in the chamber, they even have to have the shell hold or bottom of the dies shaved off There is just thousands off but there dies will not set the should back enough nothing other then talking to gun smiths and reloaders have been done in this testing JD |
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| Thanks, JD. I guess... | | ||
| Re: Re: JD, a question for you. -- JD | Top of thread | Archive | |
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Posted by: GeorgeS ® 05/21/2002, 10:33:53 Author Profile |
I'll have to check closely when I begin reloading for the .17M4 (I'm still breaking the barrel in). I guess I could always use those competition shellholders Redding makes. George |
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| Re: 2 cents worth | | ||
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Posted by: foxhunterbubba 05/21/2002, 13:27:40 |
i have a set of 17 mach 4 redding dies and they werk perfect, most of my dies are redding or forest with one odd hornaday . bob |
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Posted by: Dan C ® 05/21/2002, 08:27:59 Author Profile |
Alan, a formed case will actually make a very nice gauge, as the chamber can then be cut to match your dies. You need to acquire some form dies and a FL die first, and ideally a Redding Competition shell holder set. If you are not familiar with these, they come in a set of 5 and are graduated in .002" increments, each allowing the case to set slightly deeper in the shellholder. For a chamber gauge, use the +.002" Redding shellholder and form a case with your form dies and FL die set for a hard cam over on the shellholder. This will be your 'go' gauge. If you want a 'no go' gauge, switch to the Redding +.008" or +.010" shellholder, and form another case. Leave the expander out of the FL die while making these gauges to make sure that the expander ball does not influence the shoulder location.. The formed Mach IV case makes a very nice gauge since the shoulder is actually pushed back during forming, providing a good contact surface. It will work fine. As you know, the reamer has nothing to do with your final headspace dimension, that is wholly determined by how far the reamer is run in. You will end up with a chamber matched perfectly to your form and FL dies, and the Redding shellholders are then used to accurately bump your shoulder later when required. You can do all this without the shellholders, but they are nice! Oh, my Montana gopher trip was mostly a bust! The wind was just ridiculous all weekend, and the gophers were scarce. The farmers are saying that the gophers are having a late year and are likely still down nursing pups. I went about 2 weeks too early! Luck........ Dan C |
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| thanks,,,get dies first-good idea(nt) | | ||
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Posted by: alan in ga 05/21/2002, 15:31:59 |
x |
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| Re: Maybe Rent a Gage? | | ||
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Posted by: Chucker ® 05/27/2002, 11:52:00 Author Profile |
There are a number of ways to get you headspace close but a gage will insure the next rifle you build in the same caliber will allow you to switch ammo. If you get to the point the ammo is rifle specific it is a pain. Ask me I know... You might be able to rent a gage. If not I think they are only about 25 dollars or so. Any way good luck with you project.
Your friend, Chucker.  |
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| test results 221 fi (fireball improved 40degree) | | | |
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Posted by: foxhunterbubba 05/19/2002, 17:47:02 |
19.5 aa 2015 60 gr vmax ww primer 2755 fps
20 aa 2015 60 gr vmax ww primer 2825 fps 20.5 aa 2015 60 gr vmax ww primer 2915 fps 21.0 aa 2015 60 gr vmax ww primer 3010 fps( most acc. .49 ") 21.0 gr 2015 63 gr sierra 7.5 primer 2955 ( most acc 63 gr .37) this gun is a ruger compact ss with grey laminated stock, 16 in barrel with a 1in 12 twist. a extra thick recoil pad was added and a black ebony fore end tip was added. the gun is glass bedded and has a 5lb tention point at the end of the barrel channel. for those of you who did not figure out the formola hers the long version.
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| Hey bubba sounds cool,......... | | ||
| Re: test results 221 fi (fireball improved 40degree) -- foxhunterbubba | Top of thread | Archive | |
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Posted by: SunRa 05/19/2002, 18:34:43 |
Who did the Mithing, and dies? I always wanted a .221 FB (along with every other cartridge I read about, that guys are having fun with!!!!!lol) but why have a .221 FB when you can have a .221 FB IMP!!!! Are you just basing your load data off of the standard .221 data? Thanks Bubba! -Sunny |
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| Re: Hey bubba sounds cool,......... | | | |
| Re: Hey bubba sounds cool,......... -- SunRa | Top of thread | Archive | |
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Posted by: foxhunterbubba 05/19/2002, 20:25:59 |
denny powell a local bench rest shooter did the smithing, for a reamer we used a 223 ackley improved. the 221 fb is nothing but the front half of a 223 so a 221 fireball improved is nothing more than a 223 improved front half. loading data is 221 fb and work your way up. the gun needs about 5 more inches of barrel, 21 would be perfect. fire forming loads are 21.0 gr of reloader 7 with a 45 sierra spire point at 3245 fps, accuracy is minute of prarie dog to 250 yds.
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| Re: i forgot to mention the dies |  | | |
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Posted by: foxhunterbubba 05/19/2002, 20:29:48 |
we ordered 223 ai 40 degree , chucked it up in a lath and cut it to length. it works great, they are redding full body with the replacable bushing. bob |
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| I call it the 221 "FBI" (nt) | | | |
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Posted by: alan in ga 05/19/2002, 18:40:14 |
x |
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