IMR 4350
- Thread starter muzz
- Start date
Hi Muzz: I don't have any quantitative data to share with you but I've used IMR 4350 for 20+ years and have not experienced any noticeable changes in performance due to temperature variations. Are your concerns with loaded cartridges or long term powder storage? I've not had a problem with storing IMR 4350 either.
- Thread starter
- #4
DrMike
Ballistician
- Nov 8, 2006
- 37,402
- 6,213
Are you shooting at temperatures below -5 F or above 100 F? If not, you shouldn't have serious problems.
Looking at 4 different loads in three different rifles, I've seen a loss between 1 and 2 fps per degree of temperature drop measured over a 50 to 60 degree temperature change this year. The temperature ranged from 80 to 20. No major accuracy loss or change in point of impact.
- Oct 30, 2004
- 24,344
- 3,185
I can tell you that H4350 is more stable Temperature wise. Hence the one I use
filmjunkie4ever
Handloader
- May 4, 2011
- 1,964
- 1,353
I also use H4350 for that same reason. The IMR version is a little faster burning too I have discovered but for all intents and purposes the H4350 will do everything the IMR will do and while being less temperature sensitive.
ElmerThud
Handloader
- Jul 16, 2011
- 814
- 137
I've used IMR4350/100gn bullets in my .25-06 loads in temps ranging from +20C to -8C. I've never experienced any issue at all in taking quarry at ranges from 60yds to 300yds at any time over the last 11years using the same load.
Works well for me & I can't see you have any worries using this propellant. ATB
Works well for me & I can't see you have any worries using this propellant. ATB
- Thread starter
- #10
DrMike
Ballistician
- Nov 8, 2006
- 37,402
- 6,213
You'll be fine with IMR 4350.
https://www.hodgdon.com/smokeless/extreme/page2.php
IMR4350 has always given better accuracy, the slight variance is not a big deal to me. The link compares them.
IMR4350 has always given better accuracy, the slight variance is not a big deal to me. The link compares them.
6mm Remington
Ammo Smith
- Feb 27, 2006
- 5,255
- 626
I use IMR4350 a lot and hunt from really cold stuff to pretty hot temps. and it has not been an issue. I have not sat down and chronographed at various temps to see what the fps reading is, maybe if I get some time I can. I've just been hunting in -14 to -20 degree F temps and am not concerned at all about using these loads. I think H4350 is a great one too. I've just had more experience with IMR4350.
- Thread starter
- #15
DrMike
Ballistician
- Nov 8, 2006
- 37,402
- 6,213
I should think it would work quite well.
Cartridge : .25-06 Rem.
Bullet : .257, 110, Nosler AccuBond 53742
Useable Case Capaci: 60.236 grain H2O = 3.911 cm³
Cartridge O.A.L. L6: 3.250 inch = 82.55 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : IMR 4350
Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !
Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms
-20.0 77 42.56 2596 1646 34951 9675 93.0 1.443
-18.0 79 43.62 2656 1723 37191 9950 94.1 1.407
-16.0 81 44.69 2716 1801 39563 10214 95.0 1.365
-14.0 83 45.75 2775 1881 42075 10467 95.9 1.326
-12.0 85 46.82 2835 1963 44736 10707 96.7 1.288
-10.0 87 47.88 2894 2045 47553 10934 97.5 1.251
-08.0 89 48.94 2953 2129 50537 11146 98.1 1.216
-06.0 91 50.01 3011 2214 53699 11342 98.6 1.183
-04.0 92 51.07 3069 2300 57050 11523 99.1 1.150 ! Near Maximum !
-02.0 94 52.14 3127 2388 60602 11686 99.4 1.119 ! Near Maximum !
+00.0 96 53.20 3184 2476 64370 11832 99.7 1.089 ! Near Maximum !
+02.0 98 54.26 3240 2564 68368 11959 99.9 1.060 !DANGEROUS LOAD-DO NOT USE!
+04.0 100 55.33 3296 2654 72613 12067 100.0 1.032 !DANGEROUS LOAD-DO NOT USE!
+06.0 102 56.39 3352 2744 77125 12157 100.0 1.005 !DANGEROUS LOAD-DO NOT USE!
+08.0 104 57.46 3407 2835 81923 12242 100.0 0.979 !DANGEROUS LOAD-DO NOT USE!
+10.0 106 58.52 3462 2927 87029 12324 100.0 0.954 !DANGEROUS LOAD-DO NOT USE!
Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba 96 53.20 3297 2655 74905 11462 100.0 1.019 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 96 53.20 3022 2231 53871 11767 96.1 1.181
To be sure, you can find other powders that give similar fill ratios and perhaps slightly more velocity. Still, IMR 4350 would work just fine.
Cartridge : .25-06 Rem.
Bullet : .257, 110, Nosler AccuBond 53742
Useable Case Capaci: 60.236 grain H2O = 3.911 cm³
Cartridge O.A.L. L6: 3.250 inch = 82.55 mm
Barrel Length : 24.0 inch = 609.6 mm
Predicted Data for Indicated Charges of the Following Powders.
Matching Maximum Pressure: 64500 psi, or 444 MPa
or a maximum loading ratio or filling of 110 %
These calculations refer to your specified settings in QuickLOAD 'Cartridge Dimensions' window.
C A U T I O N : any load listed can result in a powder charge that falls below minimum suggested
loads or exceeds maximum suggested loads as presented in current handloading manuals. Understand
that all of the listed powders can be unsuitable for the given combination of cartridge, bullet
and gun. Actual load order can vary, depending upon lot-to-lot powder and component variations.
USE ONLY FOR COMPARISON !
22 loads produced a Loading Ratio below user-defined minimum of 90%. These powders have been skipped.
Powder type Filling/Loading Ratio Charge Charge Vel. Prop.Burnt P max P muzz B_Time
% Grains Gramm fps % psi psi ms
--------------------------------- -----------------------------------------------------------------
Alliant Reloder-25 109.5 60.5 3.92 3318 100.0 64500 13049 1.082 ! Near Maximum !
Norma MRP 101.5 58.8 3.81 3317 99.9 64500 13593 1.091 ! Near Maximum !
Vihtavuori N560 103.3 58.6 3.80 3313 98.3 64500 13947 1.085 ! Near Maximum !
IMR 7828 107.8 58.2 3.77 3304 98.7 64500 13521 1.075 ! Near Maximum !
IMR 7828 SSC 102.0 58.2 3.77 3304 98.7 64500 13521 1.075 ! Near Maximum !
Accurate MAGPRO 103.4 61.1 3.96 3299 97.1 64500 13984 1.093 ! Near Maximum !
Alliant Reloder-22 103.6 58.1 3.77 3288 99.4 64500 13414 1.090 ! Near Maximum !
Winchester WXR 106.3 58.4 3.78 3287 99.4 64500 13426 1.091 ! Near Maximum !
Vihtavuori N570 110.0 64.4 4.17 3272 94.1 58904 14853 1.128 ! Near Maximum !
Ramshot Magnum 103.1 62.4 4.04 3263 99.8 64500 12765 1.086 ! Near Maximum !
Alliant Reloder-17 91.2 53.1 3.44 3260 100.0 64500 12076 1.089 ! Near Maximum !
Norma MRP 2 110.0 61.1 3.96 3258 98.6 60671 13796 1.124 ! Near Maximum !
Alliant Reloder-19 100.5 55.8 3.62 3247 99.3 64500 12822 1.086 ! Near Maximum !
Alliant Reloder-33 110.0 67.1 4.35 3244 94.3 58439 14602 1.134 ! Near Maximum !
Winchester 760 90.8 53.3 3.46 3242 99.9 64500 12489 1.092 ! Near Maximum !
Hodgdon H414 90.8 53.3 3.46 3242 99.9 64500 12489 1.092 ! Near Maximum !
Ramshot Hunter 96.1 55.1 3.57 3239 100.0 64500 12395 1.092 ! Near Maximum !
Norma 204 95.4 54.7 3.55 3225 99.2 64500 12516 1.085 ! Near Maximum !
Hodgdon H4831 105.7 57.1 3.70 3220 97.9 64500 12636 1.083 ! Near Maximum !
Hodgdon H4831 SC 101.7 57.1 3.70 3220 97.9 64500 12636 1.083 ! Near Maximum !
Norma URP 95.7 52.6 3.41 3219 100.0 64500 11901 1.097 ! Near Maximum !
Vihtavuori N550 93.0 52.8 3.42 3219 100.0 64500 12037 1.100 ! Near Maximum !
Accurate 4350 94.8 52.6 3.41 3213 100.0 64500 11864 1.114 ! Near Maximum !
IMR 4831 100.3 53.4 3.46 3198 100.0 64500 11637 1.106 ! Near Maximum !
Hodgdon H1000 110.0 60.4 3.91 3198 98.1 59630 12958 1.112 ! Near Maximum !
Winchester Supreme 780 99.0 58.0 3.76 3194 99.2 64500 12151 1.092 ! Near Maximum !
Accurate 3100 103.6 57.5 3.73 3187 100.0 64500 11857 1.120 ! Near Maximum !
Vihtavuori N165 105.9 58.1 3.77 3187 99.6 64500 11941 1.096 ! Near Maximum !
Hodgdon H4350 98.2 53.3 3.46 3186 99.7 64500 11860 1.088 ! Near Maximum !
IMR 4350 96.4 53.2 3.45 3185 99.7 64500 11836 1.088 ! Near Maximum !
Vihtavuori N160 106.0 56.4 3.66 3174 98.5 64500 11981 1.090 ! Near Maximum !
Hodgdon Hybrid 100V 98.2 52.7 3.42 3172 100.0 64500 10990 1.098 ! Near Maximum !
IMR 4007 SSC 90.6 51.0 3.31 3169 99.7 64500 11722 1.095 ! Near Maximum !
Accurate 2700 90.7 52.6 3.41 3118 99.6 64500 11078 1.098 ! Near Maximum !
Cartridge : .25-06 Rem.
Bullet : .257, 110, Nosler AccuBond 53742
Useable Case Capaci: 60.236 grain H2O = 3.911 cm³
Cartridge O.A.L. L6: 3.250 inch = 82.55 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : IMR 4350
Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !
Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms
-20.0 77 42.56 2596 1646 34951 9675 93.0 1.443
-18.0 79 43.62 2656 1723 37191 9950 94.1 1.407
-16.0 81 44.69 2716 1801 39563 10214 95.0 1.365
-14.0 83 45.75 2775 1881 42075 10467 95.9 1.326
-12.0 85 46.82 2835 1963 44736 10707 96.7 1.288
-10.0 87 47.88 2894 2045 47553 10934 97.5 1.251
-08.0 89 48.94 2953 2129 50537 11146 98.1 1.216
-06.0 91 50.01 3011 2214 53699 11342 98.6 1.183
-04.0 92 51.07 3069 2300 57050 11523 99.1 1.150 ! Near Maximum !
-02.0 94 52.14 3127 2388 60602 11686 99.4 1.119 ! Near Maximum !
+00.0 96 53.20 3184 2476 64370 11832 99.7 1.089 ! Near Maximum !
+02.0 98 54.26 3240 2564 68368 11959 99.9 1.060 !DANGEROUS LOAD-DO NOT USE!
+04.0 100 55.33 3296 2654 72613 12067 100.0 1.032 !DANGEROUS LOAD-DO NOT USE!
+06.0 102 56.39 3352 2744 77125 12157 100.0 1.005 !DANGEROUS LOAD-DO NOT USE!
+08.0 104 57.46 3407 2835 81923 12242 100.0 0.979 !DANGEROUS LOAD-DO NOT USE!
+10.0 106 58.52 3462 2927 87029 12324 100.0 0.954 !DANGEROUS LOAD-DO NOT USE!
Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba 96 53.20 3297 2655 74905 11462 100.0 1.019 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 96 53.20 3022 2231 53871 11767 96.1 1.181
To be sure, you can find other powders that give similar fill ratios and perhaps slightly more velocity. Still, IMR 4350 would work just fine.
Cartridge : .25-06 Rem.
Bullet : .257, 110, Nosler AccuBond 53742
Useable Case Capaci: 60.236 grain H2O = 3.911 cm³
Cartridge O.A.L. L6: 3.250 inch = 82.55 mm
Barrel Length : 24.0 inch = 609.6 mm
Predicted Data for Indicated Charges of the Following Powders.
Matching Maximum Pressure: 64500 psi, or 444 MPa
or a maximum loading ratio or filling of 110 %
These calculations refer to your specified settings in QuickLOAD 'Cartridge Dimensions' window.
C A U T I O N : any load listed can result in a powder charge that falls below minimum suggested
loads or exceeds maximum suggested loads as presented in current handloading manuals. Understand
that all of the listed powders can be unsuitable for the given combination of cartridge, bullet
and gun. Actual load order can vary, depending upon lot-to-lot powder and component variations.
USE ONLY FOR COMPARISON !
22 loads produced a Loading Ratio below user-defined minimum of 90%. These powders have been skipped.
Powder type Filling/Loading Ratio Charge Charge Vel. Prop.Burnt P max P muzz B_Time
% Grains Gramm fps % psi psi ms
--------------------------------- -----------------------------------------------------------------
Alliant Reloder-25 109.5 60.5 3.92 3318 100.0 64500 13049 1.082 ! Near Maximum !
Norma MRP 101.5 58.8 3.81 3317 99.9 64500 13593 1.091 ! Near Maximum !
Vihtavuori N560 103.3 58.6 3.80 3313 98.3 64500 13947 1.085 ! Near Maximum !
IMR 7828 107.8 58.2 3.77 3304 98.7 64500 13521 1.075 ! Near Maximum !
IMR 7828 SSC 102.0 58.2 3.77 3304 98.7 64500 13521 1.075 ! Near Maximum !
Accurate MAGPRO 103.4 61.1 3.96 3299 97.1 64500 13984 1.093 ! Near Maximum !
Alliant Reloder-22 103.6 58.1 3.77 3288 99.4 64500 13414 1.090 ! Near Maximum !
Winchester WXR 106.3 58.4 3.78 3287 99.4 64500 13426 1.091 ! Near Maximum !
Vihtavuori N570 110.0 64.4 4.17 3272 94.1 58904 14853 1.128 ! Near Maximum !
Ramshot Magnum 103.1 62.4 4.04 3263 99.8 64500 12765 1.086 ! Near Maximum !
Alliant Reloder-17 91.2 53.1 3.44 3260 100.0 64500 12076 1.089 ! Near Maximum !
Norma MRP 2 110.0 61.1 3.96 3258 98.6 60671 13796 1.124 ! Near Maximum !
Alliant Reloder-19 100.5 55.8 3.62 3247 99.3 64500 12822 1.086 ! Near Maximum !
Alliant Reloder-33 110.0 67.1 4.35 3244 94.3 58439 14602 1.134 ! Near Maximum !
Winchester 760 90.8 53.3 3.46 3242 99.9 64500 12489 1.092 ! Near Maximum !
Hodgdon H414 90.8 53.3 3.46 3242 99.9 64500 12489 1.092 ! Near Maximum !
Ramshot Hunter 96.1 55.1 3.57 3239 100.0 64500 12395 1.092 ! Near Maximum !
Norma 204 95.4 54.7 3.55 3225 99.2 64500 12516 1.085 ! Near Maximum !
Hodgdon H4831 105.7 57.1 3.70 3220 97.9 64500 12636 1.083 ! Near Maximum !
Hodgdon H4831 SC 101.7 57.1 3.70 3220 97.9 64500 12636 1.083 ! Near Maximum !
Norma URP 95.7 52.6 3.41 3219 100.0 64500 11901 1.097 ! Near Maximum !
Vihtavuori N550 93.0 52.8 3.42 3219 100.0 64500 12037 1.100 ! Near Maximum !
Accurate 4350 94.8 52.6 3.41 3213 100.0 64500 11864 1.114 ! Near Maximum !
IMR 4831 100.3 53.4 3.46 3198 100.0 64500 11637 1.106 ! Near Maximum !
Hodgdon H1000 110.0 60.4 3.91 3198 98.1 59630 12958 1.112 ! Near Maximum !
Winchester Supreme 780 99.0 58.0 3.76 3194 99.2 64500 12151 1.092 ! Near Maximum !
Accurate 3100 103.6 57.5 3.73 3187 100.0 64500 11857 1.120 ! Near Maximum !
Vihtavuori N165 105.9 58.1 3.77 3187 99.6 64500 11941 1.096 ! Near Maximum !
Hodgdon H4350 98.2 53.3 3.46 3186 99.7 64500 11860 1.088 ! Near Maximum !
IMR 4350 96.4 53.2 3.45 3185 99.7 64500 11836 1.088 ! Near Maximum !
Vihtavuori N160 106.0 56.4 3.66 3174 98.5 64500 11981 1.090 ! Near Maximum !
Hodgdon Hybrid 100V 98.2 52.7 3.42 3172 100.0 64500 10990 1.098 ! Near Maximum !
IMR 4007 SSC 90.6 51.0 3.31 3169 99.7 64500 11722 1.095 ! Near Maximum !
Accurate 2700 90.7 52.6 3.41 3118 99.6 64500 11078 1.098 ! Near Maximum !
nosler06
Handloader
- Nov 13, 2012
- 255
- 44
I have used IMR4350 for over 30 years in my 30-06 with no issues. I have just switched over about 1 1/2 years ago to H4350 only to play with it and it was available to me. I have loaded the exact loads with both 4350's at 55.5gr and 180gr NP and could not find any real difference on target for impact point. I did this small sample test (10 rnds each) summer 28 deg c and winter -3 deg c. I agree with the others that IMR4350 should work well for you in the .25-06.
ElmerThud
Handloader
- Jul 16, 2011
- 814
- 137
muzz":2idogsj8 said:
IMR4350 - It's a great propellant for this cartridge & 100gn bullets in my rifle.
IMR4831 works better in my rifle with the 110gn AB bullet.
ATB
- Nov 4, 2004
- 25,342
- 8,903
All powders are subject to temperature changes, some more so than others.
JD338
JD338
