HuntingNut
HuntingNut
   Login or Register
HomeCommunity ForumsPhoto AlbumsRegister
     
 

User Info

Welcome Anonymous


Membership:
Latest: qpww66
New Today: 1
New Yesterday: 1
Overall: 12605

People Online:
Members: 0
Visitors: 378
BOT: 3
Total: 381
Who Is Where:
 Visitors:
01: Forums
02: Forums
03: Home
04: Forums
05: Home
06: Forums
07: Home
08: Home
09: Home
10: Forums
11: Forums
12: Forums
13: News
14: Forums
15: Forums
16: Your Account
17: Forums
18: Home
19: Home
20: Home
21: Home
22: Home
23: Forums
24: Forums
25: Home
26: Forums
27: News
28: Forums
29: Forums
30: Home
31: Forums
32: Forums
33: Forums
34: News
35: Forums
36: Home
37: Home
38: Home
39: News
40: Home
41: News
42: Forums
43: Forums
44: Forums
45: Home
46: Forums
47: Forums
48: Forums
49: News
50: News
51: Home
52: Home
53: Home
54: Forums
55: Photo Albums
56: Home
57: Home
58: Home
59: News
60: Your Account
61: Home
62: Home
63: News
64: Forums
65: Home
66: Forums
67: Forums
68: News
69: Forums
70: Forums
71: Your Account
72: Forums
73: Forums
74: Forums
75: Forums
76: Forums
77: Forums
78: Forums
79: Forums
80: Forums
81: Home
82: Forums
83: Home
84: Forums
85: Forums
86: Home
87: Photo Albums
88: Your Account
89: Home
90: Home
91: Forums
92: Home
93: Home
94: Forums
95: Home
96: Your Account
97: Home
98: Home
99: Home
100: Forums
101: News
102: Forums
103: News
104: Forums
105: Home
106: Home
107: Forums
108: Home
109: Home
110: Home
111: Home
112: Forums
113: Home
114: Forums
115: Forums
116: Forums
117: Forums
118: Forums
119: Home
120: Forums
121: Home
122: Forums
123: Forums
124: Forums
125: News
126: Home
127: Home
128: News
129: Forums
130: Forums
131: Forums
132: Forums
133: Forums
134: Photo Albums
135: Your Account
136: Forums
137: Forums
138: Home
139: Forums
140: Forums
141: Home
142: Home
143: Forums
144: Home
145: Forums
146: Home
147: Forums
148: News
149: Forums
150: Forums
151: Forums
152: Home
153: Forums
154: Forums
155: Forums
156: Forums
157: News
158: Home
159: Home
160: Forums
161: Home
162: Forums
163: Forums
164: News
165: News
166: Home
167: Home
168: Home
169: Forums
170: Home
171: Forums
172: Photo Albums
173: Home
174: Home
175: Forums
176: Home
177: Home
178: Forums
179: Home
180: Home
181: Home
182: Photo Albums
183: Forums
184: Forums
185: Forums
186: Photo Albums
187: Forums
188: Forums
189: Forums
190: Forums
191: Forums
192: Photo Albums
193: News
194: News
195: News
196: Your Account
197: Forums
198: Forums
199: Forums
200: Forums
201: Forums
202: Forums
203: Photo Albums
204: Forums
205: Forums
206: Forums
207: Forums
208: Forums
209: Forums
210: Forums
211: Forums
212: Forums
213: Forums
214: Forums
215: Forums
216: Forums
217: Forums
218: Forums
219: Forums
220: Forums
221: Forums
222: Forums
223: Forums
224: Your Account
225: Photo Albums
226: Forums
227: Your Account
228: Home
229: Forums
230: Forums
231: Forums
232: Photo Albums
233: Statistics
234: Forums
235: Forums
236: Forums
237: News
238: News
239: Your Account
240: Home
241: Forums
242: Photo Albums
243: Home
244: Home
245: Your Account
246: Forums
247: Forums
248: Forums
249: Home
250: Forums
251: Home
252: News
253: Forums
254: Your Account
255: Home
256: Forums
257: Home
258: Forums
259: Home
260: News
261: Home
262: Forums
263: News
264: Forums
265: Forums
266: Your Account
267: Home
268: Home
269: Home
270: Forums
271: Photo Albums
272: Home
273: Home
274: Home
275: Home
276: Your Account
277: Forums
278: Forums
279: Your Account
280: Home
281: Forums
282: Home
283: Home
284: Home
285: Home
286: Home
287: Home
288: Home
289: Home
290: Home
291: Photo Albums
292: Your Account
293: Home
294: Forums
295: Forums
296: Forums
297: Home
298: Home
299: Home
300: Forums
301: Your Account
302: Home
303: Home
304: Forums
305: Photo Albums
306: Home
307: Forums
308: Home
309: Forums
310: Home
311: Forums
312: Forums
313: Home
314: Forums
315: PointBlank Ballistics
316: Home
317: Home
318: Forums
319: Forums
320: Forums
321: Photo Albums
322: Forums
323: Home
324: Forums
325: Forums
326: Forums
327: Forums
328: Forums
329: Forums
330: Forums
331: Forums
332: Forums
333: Forums
334: Forums
335: Forums
336: Forums
337: Home
338: Home
339: News
340: Home
341: Home
342: Home
343: Your Account
344: Home
345: Home
346: Your Account
347: Home
348: Home
349: Home
350: Your Account
351: Forums
352: Home
353: Home
354: Forums
355: Photo Albums
356: Home
357: Forums
358: Forums
359: Home
360: Home
361: Home
362: Home
363: Home
364: Home
365: Forums
366: Your Account
367: Your Account
368: Forums
369: Forums
370: Forums
371: Forums
372: Forums
373: Forums
374: Photo Albums
375: Home
376: Forums
377: Forums
378: Forums
  BOT:
01: News
02: Forums
03: Forums

Staff Online:

No staff members are online!
 

Coppermine Stats
Photo Albums
 Albums: 305
 Pictures: 2361
  · Views: 405868
  · Votes: 1309
  · Comments: 86
 

Support our Advertisers

What if...for slimjim by request, or anyone else, feel free.
Discussions related to Guns and Firearms
Go to page 1, 2, 3, 4, 5, 6  Next
View previous topic :: View next topic  
Author Message
fnuser
Super Member
Super Member


Joined: Dec 23, 2008
Posts: 914
Location: S.W. Missouri, U.S.A.

PostPosted: Wed Jul 14, 2010 7:30 pm    Post subject: What if...for slimjim by request, or anyone else, feel free. Reply with quote

This is in relation to A.R.'s. What if you could use standard everything i.e. mags, bolts, uppers, lowers, the only thing different was the cartridge and barrel, moving a bullet of @90 g at a velocity of @2700f.p.s. conservatively with a b.c. of greater then .320. Wouldn't that be cool? I'm still cranking #'s but have ordered the dies, upper,bolt carrier group, and am drawing barrel contours in my sleep. So I'm pretty serious. .25 UGALDE, basically an ackley improved .223 Remington case necked up to .257 bullet dia. produced mostly for the contender crowd , thus the moniker .25 T.C.U. Has proven itself in 14" guns already so a 20" or 21" in a basic H-Bar config might be just the ticket. You got one Pumpkin? I only found it in c.o.t.w.#7 so the loads are few but it looks promising. I'll keep you posted.

_________________
N.R.A. Endowment Member
Back to top
View user's profile Photo Gallery
Pumpkinslinger
Super Member
Super Member


Joined: Sep 22, 2007
Posts: 4487
Location: NC foothills

PostPosted: Wed Jul 14, 2010 10:29 pm    Post subject: Re: What if...for slimjim by request, or anyone else, feel free. Reply with quote

I looked briefly at the 7mm TCU for an AR but the OAL is too long. A quick check didn't find an OAL for the .25 TCU but you'll want to keep that in mind.

_________________
Mike

"I ain't no better than anyone else, and there ain't no one better than me!" Ma Kettle

Back to top
View user's profile AIM Address Yahoo Messenger Photo Gallery
slimjim
Super Member
Super Member


Joined: May 16, 2009
Posts: 7529
Location: Fort Worth TX

PostPosted: Thu Jul 15, 2010 5:06 am    Post subject: Re: What if...for slimjim by request, or anyone else, feel f Reply with quote

from .25 Ugalde

The 25 Ugalde, also known as the Thompson/Center Ugalde, was developed by Wes Ugalde of Fallon, Nevada, in 1987. The cartridge, like other TCU cartridges, is based on the necked up and Improved 223 Remington case. The 25 TCU is intended for metallic silhouette shooting, but would also make a good varmint cartridge at moderate ranges. There is a good selection of 25 caliber bullets available in weights from 60 to 120 grains. By the standard of today, ballistics are not spectacular, but quite adequate for the intended purpose. Dean Grennell reported less than minute of angle groups. It is in about the same class as the old 25-35 and would be marginal for deer.

This text is based on information from “Cartridges of the World”, Hodgdon reloading manual, the cartridge designer and/or own resources.
Back to top
View user's profile
slimjim
Super Member
Super Member


Joined: May 16, 2009
Posts: 7529
Location: Fort Worth TX

PostPosted: Thu Jul 15, 2010 5:38 am    Post subject: Re: What if...for slimjim by request, or anyone else, feel free. Reply with quote

Ok, fnuser, why did you pick the .257 vs .243? The 6mm/223 or 6mm TCU has gained a lot of interest.

www.ar15armory.com/for...48703.html

_________________
"To anger a conservative, lie to him. To anger a liberal, tell him the truth." - Theodore Roosevelt

"The world is a dangerous place to live; not because of the people who are evil, but because of the people who don't do anything about it." - Albert Einstein
Back to top
View user's profile
slimjim
Super Member
Super Member


Joined: May 16, 2009
Posts: 7529
Location: Fort Worth TX

PostPosted: Thu Jul 15, 2010 5:45 am    Post subject: Re: What if...for slimjim by request, or anyone else, feel free. Reply with quote

As I've been looking at alternative calibers for the AR, I've had one criteria - its got to be able to shoot the lighter bullets at velocities greater than 3000 fps. That has ruled out the 6.5 Grendel for me. The 6mm Turbo 40 Improved has sparked my interest.

However, if you are going to use all common components but the barrel, its impressive to see how much more performance one can get with the 6mm/223 over the standard AR cartridge. Makes you wonder why the US Military has hung on to the 5.56 for so long when they can do so much more with just a bullet diameter change and get out of the realm of being a "poodle shooter"

Am very interested to see how your project moves along.

_________________
"To anger a conservative, lie to him. To anger a liberal, tell him the truth." - Theodore Roosevelt

"The world is a dangerous place to live; not because of the people who are evil, but because of the people who don't do anything about it." - Albert Einstein
Back to top
View user's profile
fnuser
Super Member
Super Member


Joined: Dec 23, 2008
Posts: 914
Location: S.W. Missouri, U.S.A.

PostPosted: Thu Jul 15, 2010 9:25 am    Post subject: Re: What if...for slimjim by request, or anyone else, feel free. Reply with quote

pumpkin I did before i ordered the dies this time. Actually the 85g Nosler offering looks custom made for this. Slimjim yeah the 6.5grendal attracted me too, also the 6.8 but neither were quite "it" for one reason or another. i am basing my necking up project on past experience of other wildcats i have tried, take the 35 whelen for example it is about as familiar as its parent. once you enlarge the case neck much further it starts to act more like a straight case then a bottleneck internally speaking and externally speaking the geometry of the .223 case is very similar to a shortnecked 30-06 in its various ratio's so if you factor this approximately (1.16) you get .257.

_________________
N.R.A. Endowment Member
Back to top
View user's profile Photo Gallery
fnuser
Super Member
Super Member


Joined: Dec 23, 2008
Posts: 914
Location: S.W. Missouri, U.S.A.

PostPosted: Thu Jul 15, 2010 10:34 am    Post subject: Re: What if...for slimjim by request, or anyone else, feel free. Reply with quote

75g's will get close to 3000 but it is all speculative until i actually chono my results with loads that work, I won't use a load based only on velocity.

_________________
N.R.A. Endowment Member
Back to top
View user's profile Photo Gallery
PaulS
Super Member
Super Member


Joined: Feb 18, 2006
Posts: 3539
Location: South-Eastern Washington - the State

PostPosted: Thu Jul 15, 2010 11:12 am    Post subject: Re: What if...for slimjim by request, or anyone else, feel free. Reply with quote

I tried the 6mm TCU in a 24" barrel and couldn't get the velocity anywhere near what I wanted. I had to go to a 30-30 case necked down to get the 3000 fps that I was wanting. Not only did the velocity come up but the groups shrunk down to a nice cloverleaf hole at 100 yards and about 1/4 MOA at 200 using 85 grain Sierra bullets.

_________________
Paul
__________________
Speer, Lyman, Hodgdon, Sierra, and Hornady = reliable loading data
So and So's pages on the internet = NOT reliable loading data
Always check data against manuals
NEVER exceed maximum listed loads
Back to top
View user's profile Send e-mail
fnuser
Super Member
Super Member


Joined: Dec 23, 2008
Posts: 914
Location: S.W. Missouri, U.S.A.

PostPosted: Thu Jul 15, 2010 5:57 pm    Post subject: Re: What if...for slimjim by request, or anyone else, feel free. Reply with quote

were you using 85's in the 6tcu also? what did you actually get? .25 t.c.u. load= 24.5gr IMR 4198 85gr Nosler BT--2800fps this data came from another site seems a little hot to me, this was a 21" contender. he didn't list his c.o.a.l. so he might have been seating them out a little to get some volume.

_________________
N.R.A. Endowment Member


Last edited by fnuser on Thu Jul 15, 2010 6:07 pm; edited 2 times in total
Back to top
View user's profile Photo Gallery
slimjim
Super Member
Super Member


Joined: May 16, 2009
Posts: 7529
Location: Fort Worth TX

PostPosted: Thu Jul 15, 2010 6:04 pm    Post subject: Re: What if...for slimjim by request, or anyone else, feel free. Reply with quote

Yes, PaulS, this sounds very interesting! Any pictures of the cartridges for comparison? Picture of the rifle? Please tell us more!!

_________________
"To anger a conservative, lie to him. To anger a liberal, tell him the truth." - Theodore Roosevelt

"The world is a dangerous place to live; not because of the people who are evil, but because of the people who don't do anything about it." - Albert Einstein
Back to top
View user's profile
fnuser
Super Member
Super Member


Joined: Dec 23, 2008
Posts: 914
Location: S.W. Missouri, U.S.A.

PostPosted: Thu Jul 15, 2010 6:15 pm    Post subject: Re: What if...for slimjim by request, or anyone else, feel free. Reply with quote

slim, I just got a chance to look at the h335 and w748 loads you referenced and 2400+f.p.s. out of a 12" tube sounds promisingthey are seated out though 2.48" probably the longest i could go would be @ .25" shorter 2.245"-2.247"Hopefully you can see the ring I made on the .250 "



sierra75jhp.jpg
 Description:
 Filesize:  50.81 KB
 Viewed:  10478 Time(s)

sierra75jhp.jpg


.223 w .85g .257.jpg
 Description:
 Filesize:  55.6 KB
 Viewed:  10483 Time(s)

.223 w .85g .257.jpg


_________________
N.R.A. Endowment Member
Back to top
View user's profile Photo Gallery
fnuser
Super Member
Super Member


Joined: Dec 23, 2008
Posts: 914
Location: S.W. Missouri, U.S.A.

PostPosted: Thu Jul 15, 2010 7:55 pm    Post subject: Re: What if...for slimjim by request, or anyone else, feel free. Reply with quote

maybe the 75's without a boattail? I may have to dig around and see if I have some sierra 87g. softpoints if I remember right they don't have a boattail. The rings on the bullets show approximate land contact if I build a gun dedicated to 75g hps it would take alot of experimentation out but might actually simplify stuff, too soon to know but a slow twist might be neat 1-11" or 1-12"

_________________
N.R.A. Endowment Member
Back to top
View user's profile Photo Gallery
slimjim
Super Member
Super Member


Joined: May 16, 2009
Posts: 7529
Location: Fort Worth TX

PostPosted: Fri Jul 16, 2010 3:38 am    Post subject: Re: What if...for slimjim by request, or anyone else, feel free. Reply with quote

fnuser, do you have an on-line source for looking at the .257 TCU load data?

_________________
"To anger a conservative, lie to him. To anger a liberal, tell him the truth." - Theodore Roosevelt

"The world is a dangerous place to live; not because of the people who are evil, but because of the people who don't do anything about it." - Albert Einstein
Back to top
View user's profile
chambered221
Super Member
Super Member


Joined: Aug 17, 2007
Posts: 3455
Location: Lost for good !!!

PostPosted: Fri Jul 16, 2010 4:49 am    Post subject: Re: What if...for slimjim by request, or anyone else, feel f Reply with quote

What is the intended purpose of this rig ???

_________________
Ask as many people needed, sooner or later your question will be answered the way you want it answered !!!

A free people ought not only to be armed and disciplined, but they should have sufficient arms and ammunition to maintain a status of independence from any who might attempt to abuse them, which would include their own government.
~George Washington
Back to top
View user's profile Photo Gallery
PaulS
Super Member
Super Member


Joined: Feb 18, 2006
Posts: 3539
Location: South-Eastern Washington - the State

PostPosted: Fri Jul 16, 2010 12:19 pm    Post subject: Re: What if...for slimjim by request, or anyone else, feel free. Reply with quote

The only way to get up to even the minimum velocity that we wanted was to go with a 60 grain bullet in the TCU. That got 2850 fps with 26.8 gr of H335. The 85 grain loads were below 2650 fps. This was all in the Contender carbine.
The difference between 30-30 and the 6mm-30 is only the neck - the overall length is the standard length and no angles were changed. It does shorten the neck a little but it is still longer than the one caliber dimension with the 6mm bullet.
One surprising thing we found with the 6mm-30 was that even with starting loads of H335 we had cratered primers from beginning loads to maximum listed loads. We went to H4064 32.1gr and the Sierra 85 grain 1520 bullet and got 3002 fps. A real tack driver that can shoot out to an honest 200 yards on deer or down to ground squirrels.

_________________
Paul
__________________
Speer, Lyman, Hodgdon, Sierra, and Hornady = reliable loading data
So and So's pages on the internet = NOT reliable loading data
Always check data against manuals
NEVER exceed maximum listed loads
Back to top
View user's profile Send e-mail
Display posts from previous:   
Post new topic   Reply to topic   Printer Friendly Page    Forum Index » Gun & Firearm Discussions
Page 1 of 6
All times are GMT - 7 Hours
Go to page 1, 2, 3, 4, 5, 6  Next



Jump to:  


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum


Advertisements
 


Valid CSS! Valid HTML 4.01!
Click to check if this page is realy HTML 4.01 compliant for speed :)

All logos and trademarks in this site are property of HuntingNut.com.
The comments are property of their posters, all the rest © 2011 by HuntingNut.com
Interactive software released under GNU GPL, Code Credits, Privacy Policy

.: Upgraded to DragonFly 9.2 by Dizfunkshunal :.