HuntingNut
HuntingNut
   Login or Register
HomeCommunity ForumsPhoto AlbumsRegister
     
 

User Info

Welcome Anonymous


Membership:
Latest: RichardZ
New Today: 0
New Yesterday: 0
Overall: 13126

People Online:
Members: 0
Visitors: 233
BOT: 1
Total: 234
Who Is Where:
 Visitors:
01: Forums
02: Forums
03: Forums
04: Forums
05: Forums
06: Home
07: Forums
08: Your Account
09: Forums
10: Home
11: Forums
12: Forums
13: Home
14: Forums
15: Forums
16: Forums
17: Home
18: Home
19: Photo Albums
20: Forums
21: Forums
22: Forums
23: Forums
24: Your Account
25: Forums
26: Forums
27: Forums
28: Your Account
29: Home
30: Forums
31: Home
32: Forums
33: Forums
34: Home
35: Forums
36: Forums
37: Forums
38: Forums
39: Forums
40: Forums
41: Forums
42: Forums
43: Home
44: Forums
45: Home
46: Your Account
47: Forums
48: Forums
49: Your Account
50: Forums
51: Forums
52: Forums
53: Forums
54: Home
55: Your Account
56: Forums
57: Forums
58: Home
59: Forums
60: Forums
61: Forums
62: Forums
63: Forums
64: Forums
65: Forums
66: Forums
67: Home
68: Your Account
69: Forums
70: Your Account
71: Forums
72: Forums
73: Home
74: Forums
75: Forums
76: Forums
77: Forums
78: Home
79: Home
80: Your Account
81: Forums
82: Forums
83: Photo Albums
84: Forums
85: Photo Albums
86: Forums
87: Home
88: Forums
89: Forums
90: Home
91: Home
92: Your Account
93: Forums
94: Home
95: Photo Albums
96: Forums
97: Forums
98: Forums
99: Forums
100: Forums
101: Home
102: Forums
103: Forums
104: Photo Albums
105: Forums
106: Forums
107: Your Account
108: Home
109: Your Account
110: Forums
111: Your Account
112: Forums
113: Home
114: Members List
115: Forums
116: Your Account
117: Forums
118: Your Account
119: Home
120: Forums
121: Forums
122: Forums
123: Your Account
124: Forums
125: Forums
126: Your Account
127: News
128: Your Account
129: Home
130: Your Account
131: Home
132: Photo Albums
133: Forums
134: Home
135: Forums
136: Home
137: Home
138: Forums
139: Forums
140: Forums
141: Home
142: Forums
143: Forums
144: Forums
145: Forums
146: Forums
147: Forums
148: Home
149: Home
150: Forums
151: Home
152: Home
153: Forums
154: Forums
155: Forums
156: Home
157: Forums
158: Photo Albums
159: Forums
160: Forums
161: Forums
162: Forums
163: Your Account
164: Your Account
165: Forums
166: Photo Albums
167: Photo Albums
168: Forums
169: Forums
170: Forums
171: Your Account
172: Home
173: Forums
174: Home
175: Your Account
176: Forums
177: Forums
178: Forums
179: Forums
180: Your Account
181: Forums
182: Forums
183: Home
184: Your Account
185: Forums
186: Forums
187: Home
188: Your Account
189: Forums
190: Your Account
191: Forums
192: Forums
193: Forums
194: Forums
195: Home
196: Forums
197: Forums
198: Photo Albums
199: Forums
200: Forums
201: Forums
202: Forums
203: Forums
204: Your Account
205: Forums
206: Forums
207: Home
208: Forums
209: Forums
210: Forums
211: Home
212: Home
213: Your Account
214: Forums
215: Forums
216: Home
217: Forums
218: Forums
219: Forums
220: Home
221: Forums
222: Forums
223: Forums
224: Home
225: Forums
226: Forums
227: Photo Albums
228: Forums
229: Forums
230: Forums
231: Your Account
232: Your Account
233: Home
  BOT:
01: Home

Staff Online:

No staff members are online!
 

Coppermine Stats
Photo Albums
 Albums: 308
 Pictures: 2451
  · Views: 820725
  · Votes: 1316
  · Comments: 86
 

100gr .243 win prob
Discussion regarding the reloading of ammunition and tuning of loads for accuracy
Go to page 1, 2, 3  Next
Post new topic   Reply to topic   Printer Friendly Page    Forum Index » Reloading Ammunition

View previous topic :: View next topic  
Author Message
tech spec man
Rookie Member
Rookie Member


Joined: Feb 11, 2007
Posts: 7

PostPosted: Sun Jan 13, 2008 5:58 pm    Post subject: 100gr .243 win prob Reply with quote

I have been working up a new load in my .243 win with spr 100gr btsp with 40gr of H414 and mag primers. I can't get them to group worth anything. Could this probem be caused by the gun just not liking this bullet or is it a powder issue? I don't want to go out and buy two or three different bullets and powders to try and figure it out on my own so I am asking you guys for some advice.
Back to top
View user's profile
Pitt55
Member
Member


Joined: Aug 30, 2006
Posts: 104
Location: Prince George, B.C.

PostPosted: Sun Jan 13, 2008 6:10 pm    Post subject: Re: 100gr .243 win prob Reply with quote

I had trouble as well with a 243. I tried several diferent bullets and powders to find something that would group decent. If you moved up in bullet weght, the rifling may not be fast enough to stabilize the extra length. I know my worst groups were with 100 gr. and above. I settled on 95 gr. hornady sst.
Don

_________________
I thought I was wrong once, but I was mistaken!
Back to top
View user's profile Send e-mail Photo Gallery
hunterjoe21
Super Member
Super Member


Joined: Mar 30, 2007
Posts: 1486
Location: Miles City, Montana

PostPosted: Sun Jan 13, 2008 7:32 pm    Post subject: Re: 100gr .243 win prob Reply with quote

Check out this link:

www.huntingnut.com/ind...cle&sid=17

If you have more question after you read this article, check out Dan's sit:

www.clik.to/optimalchargeweight

or his forum

(Do a Google search for the address)

_________________
My 1911 is more effective than your 911.
Back to top
View user's profile
Morax
Super Member
Super Member


Joined: Dec 18, 2006
Posts: 618
Location: Pittsburgh Pa

PostPosted: Sun Jan 13, 2008 8:27 pm    Post subject: Re: 100gr .243 win prob Reply with quote

excellant reading there.. I was going to ask if the OCW was worked up for the rifle/round but ya seem to have beat me to it there. I use 38 gr of H414 with nosler 100grain partitions out of my savage .243 and have good results with them, of course diff firearms require diff charges and some just plain dont like certain bullets.. Cool
Back to top
View user's profile
Handloader
Super Member
Super Member


Joined: Aug 22, 2005
Posts: 1032
Location: Phoenix, Arizona

PostPosted: Sun Jan 13, 2008 10:25 pm    Post subject: Re: 100gr .243 win prob Reply with quote

It could be the rifle or the powder charge or a host of attendant issues, tech spec man. In general, my experience is that good rifles are not overly particular on bullet weight or powder charges, presuming that they are selected within the normal standard regarding twist and volumetric fill.

Regarding load development: While OCW has some good insights into accuracy consistency, another factor is volumetric fill of the case. I prefer my handloads to fill at least 90% of the case volume*. Burn rates and bullet weight dictate which powder(s) will accomplish this. If we apply this idea to the use of H414, we find max load data achieves around 80% fill with 100gr bullets. IOW, moving to slower burning powders will increase the charge weight and the fill %.

Reloder 19 and H4350 are in the same appx burn rate as H414, but, are bulkier powders and increase volumetric fill. Along with Reloder 22 and H4831sc, they offer better fill. The last several editions of the Nosler manual have shown that volumetric fill, accuracy and velocity often coincide. The most accurate powders in most bottleneck cartridges offer higher volumetric fill and the attendant velocity.

I use H414 in 243 Win with 55gr and 70gr bullets. Both these loadings allow 90%+ fill rate and both are subMOA. If you are developing 243 loads with 100gr bullets, I would suggest trying slower burn rate powders.

*Codifying the relationship between powder charge, optimal pressure and accuracy was one of the benefits of Homer Powley's long standing research. Newberry's ideas and conclusions are worth considering, but, some added information from Powley can round out the overall view of how to achieve accurate loads at good working pressures with good volumetric fill.
Back to top
View user's profile
Deleted_User_2665
Super Member
Super Member


Joined: May 06, 2006
Posts: 380

PostPosted: Mon Jan 14, 2008 8:59 am    Post subject: Re: 100gr .243 win prob Reply with quote

Work up 85 grain TSX's with RL15 and rule the world...........................
Back to top
View user's profile
SwampFox
Super Member
Super Member


Joined: Jul 15, 2005
Posts: 1040
Location: Destin, Florida

PostPosted: Mon Jan 14, 2008 9:13 am    Post subject: Re: 100gr .243 win prob Reply with quote

TecSpec,
The 6mm is very choosy about bullet weight in a slow twist gun. There are volumes written on the subject. You might recall the 244 Sako rifles that had a rifling twist to slow. I have owned one of these rifles, it only shot light bullets. I have also owned several 243 guns. Suggest you stick to the H-414 but drop back to a lighter bullet. By the way, mag primers are not necessary in the 243.

Handloader,
H-414, according to the folks at Hogdon, was developed specificly for the 22-250 and with cartridge cases of similar capacity it is a real performer. Combining the 260 and max loads, H-414 will shoot .10 to .15 groups. So H-414 is not or should not be a problem in the 243.
Ed

_________________
The inherent vice of capitalism is the unequal sharing of the blessings. The inherent blessing of socialism is the equal sharing of misery.
-Winston Churchill
Back to top
View user's profile Photo Gallery
wy111
Member
Member


Joined: Jun 02, 2005
Posts: 114
Location: N. Yorkshire, U.K. ( Pomgolia)

PostPosted: Mon Jan 14, 2008 9:24 am    Post subject: Re: 100gr .243 win prob Reply with quote

I use Speer 100gn btsp in my .243 for all my deer shooting. 42gns H4350 and consistantly get under 1moa @ 2920fps under ideal conditions. I take when you say mag primers you mean magnum, why are you using magnum primers? These could be causing higher pressure loads than are safe, have you cronied any loads, you may be shoving them out faster than intended and not stabilizing. Standard lr primers are sufficient, I use Rem 9 1/2 lr. I'm presuming you've had good grouping with other loads/heads, what weight/ make were the heads?

_________________
Dave
Back to top
View user's profile Visit poster's website
squirrelbait
Member
Member


Joined: Sep 23, 2005
Posts: 220
Location: Nottingham, NH

PostPosted: Mon Jan 14, 2008 10:10 am    Post subject: Re: 100gr .243 win prob Reply with quote

Techspec: I tend to think about the primers also.
I have found significant difference in pressure signs and group size with the 2 lr primer types. I stick with the standard lr primers. Seems to work best for me. I have found H4350 to be consistently more accurate than H414. Both have worked for me..........but my standard is less than 1.5" at 100yds for hunting, not less than 1".
Back to top
View user's profile
Jack
Member
Member


Joined: Oct 19, 2005
Posts: 98

PostPosted: Mon Jan 14, 2008 11:21 am    Post subject: Re: 100gr .243 win prob Reply with quote

Tech spec man, have you used the same bullet with another powder?
Rifles have preferences, like people do. If the bullet and powder are new to this rifle, either one could be what the rifle doesn't like.
A few things I can tell you from loading 243's since about 1966.
1. You do NOT need a magnum primer with any powder in the 243. Standard primers work fine. I know the Speer manual always suggests magnum primers with ball powder- I don't know why, as no one else does, including the powder manufacturers (and they oughta know).
2. Assuming you have a factory 243 barrel, you do NOT need to worry about twist rate. The twist rate will be 1-9 or 1-9 1/2 from any factory making barrels in 243, and that twist rate will stabilize any of the 100 grainers on the market.
3. H414 is one of my favorite powders for 243 with medium weight bullets, like 80 or 87 grain. For 100's, you might try a slightly slower powder, like 4831(anyone's), 4831, R19 or R22.
4. Clean the barrel. High velocity rifles foul bores quicker- and show declines in accuracy faster, too.
Last bit of advice is to only change one component at a time, when you're trying to figure out what works. My first move, after cleaning the barrel, would be to try a different powder with the same bullet you're using now.
Back to top
View user's profile
Handloader
Super Member
Super Member


Joined: Aug 22, 2005
Posts: 1032
Location: Phoenix, Arizona

PostPosted: Mon Jan 14, 2008 6:29 pm    Post subject: Re: 100gr .243 win prob Reply with quote

SwampFox wrote:

Handloader,
H-414, according to the folks at Hogdon, was developed specificly for the 22-250 and with cartridge cases of similar capacity it is a real performer. Combining the 260 and max loads, H-414 will shoot .10 to .15 groups. So H-414 is not or should not be a problem in the 243.
Ed

Hi Ed

H414 gives me superb performance in 243 and 6mm when used with bullets in the 75gr weight or less. Its one of my preferred powders for 220 Swift as well. For the heavier bullets I prefer slower burn rate powders in 243 Win. And, that was my point regarding volumetric filling of the case.

I would agree that H414 is a good choice in 22-250. Bruce Hodgdon's personal choice for 22-250 was a take down military powder, H380, the name deriving from using 38grs with both 50 and 55gr bullets. Its another superb ball powder that has extended uses in many different cartridges.

Any standard rifle primer will ignite powder well in the 243 Win. (I normally use WLRMs in all large rifle applications as it has the highest brisillance of any primer which can be a factor in subzero conditions.) Changing primers from brand to brand or from standard to magnum can have as much as 7,000 psi difference. Too, changing brass brands can effect pressure as some brass by brand is heavier than others. Given the finer points of accuracy, changing lot numbers of the same brass, primers and powder can also have an effect, usually not of critical importance for hunting rounds, but, it could be detectable on a good bench rifle. All of this is part of recommended reductions in loads when working with new lots and especially new brands of components. SAAMI standards recognize these minor differences in establishing normal max pressures. There is enough allowance to handle it.

I've actually gone to another slower powder, Reloder 25, in the 243 Win when using 100gr Partitions. My powder charge fills the case to the base of the neck, gives outstanding velocity and accuracy.
Back to top
View user's profile
Win75
Rookie Member
Rookie Member


Joined: Dec 09, 2007
Posts: 11
Location: SouthEast Missouri

PostPosted: Wed Jan 16, 2008 5:40 am    Post subject: Re: 100gr .243 win prob Reply with quote

I have reloaded the 243 for many years and always use 100gr. Nosler Partitions. My favorite load is 39.5grs. of IMR4350 using this bullet. It is not a barnburner but it is accurate and puts the deer down with authority.
Back to top
View user's profile
Deleted_User_2665
Super Member
Super Member


Joined: May 06, 2006
Posts: 380

PostPosted: Wed Jan 16, 2008 7:49 am    Post subject: Re: 100gr .243 win prob Reply with quote

The 85 X is the killinest bullet to ever to run down a 6mm tube.............
Back to top
View user's profile
Falconry
Rookie Member
Rookie Member


Joined: Nov 26, 2008
Posts: 2

PostPosted: Tue Dec 30, 2008 6:35 pm    Post subject: Re: 100gr .243 win prob Reply with quote

While reloading for my 30-06,300WSM and my son's 243 I know that COL is important, so find a good spot where it isn't on the lands but loads well and fits the magazine. Different ways to accomplish this.
I've used different powders, but mostly what the manuals suggest, and I start low and ease up. What I'm looking for is an hourglass grouping of various powder loads. Maybe the lower loads have too much spread, then they tighten up as the powder load increases, then open up again as the load gets too heavy. My 30-06 likes 56.4 grains of 4350 and I can cover 5 shots with a quarter;56 or 57 grains opens up the groups. So,I work to get the most narrow cone possible within the powder weights. Barrel harmonics is what you work with using the different burn rates and powders. Just find the sweet spot and then you can fine tune with .1 or .2 increments.
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: Wed Dec 31, 2008 11:33 am    Post subject: Re: 100gr .243 win prob Reply with quote

my best .243 100 g load is 42g imr4831 100g Hornady and standard large rifle primers. Hope this helps you. I know "stick" powders are harder to get through the necks of smaller cartridges but sometimes that is just what it takes I wouldnt have settled on this one if it didn't work so good. As I prefer "ball" powders too. a cheap fix for your h414 load might be to try standard large rifle primers. Try it, it might be too easy.

_________________
N.R.A. Endowment Member
Back to top
View user's profile Photo Gallery
Display posts from previous:   
Post new topic   Reply to topic   Printer Friendly Page    Forum Index » Reloading Ammunition
Page 1 of 3
All times are GMT - 7 Hours
Go to page 1, 2, 3  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


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* :.