I have been working on loads for my Ruger M77 MkII using 160 Gr Partition Goly Moly Free bullets and Hodgdon 4831sc powder. I have not been able to get the results I want. I had one load that would measure about 1.75. I have since put on a HS Precision stock and I am looking to add a trigger at some point, but for now I need to find a load, Any Ideas?
7mm Rem mag and 160 Partition gold moly free load needed
- Thread starter pappysc1
- Start date
- Nov 4, 2004
- 25,196
- 8,477
pappysc1
Welcome to the forum.
What are you hunting with the 160 gr PTG?
You might try the 160 gr PT and the 160 gr AB with RL22 and Federal GM215M primers. :wink:
JD338
Welcome to the forum.
What are you hunting with the 160 gr PTG?
You might try the 160 gr PT and the 160 gr AB with RL22 and Federal GM215M primers. :wink:
JD338
- Thread starter
- #4
I will be hunting pager game(ELk,Moose) with this load. I almost switched the Bullet after it was discontinued(this process has been in the works for awhile)But I was able to find more from Wholesale Hunter.
I did pick up some R-22 after reading all the posted comments from this page and I guess I will start working up a new load from that. The one thing that was different from the Partition Gold to the regular Partition was the open base(exposed lead). I was not sure if that would have any bearing on my poor grouping or not. Anyway, If anyone has any good R-22 loads I would sure appreciate the help.
I did pick up some R-22 after reading all the posted comments from this page and I guess I will start working up a new load from that. The one thing that was different from the Partition Gold to the regular Partition was the open base(exposed lead). I was not sure if that would have any bearing on my poor grouping or not. Anyway, If anyone has any good R-22 loads I would sure appreciate the help.
- Nov 4, 2004
- 25,196
- 8,477
The Nosler RG#5 shows the following load data for the
7mm Rem Mag with RL22
Start 59.0 grs, MAX 63.0 grs
Remember to start low and work up.
JD338
7mm Rem Mag with RL22
Start 59.0 grs, MAX 63.0 grs
Remember to start low and work up.
JD338
- Oct 30, 2004
- 24,287
- 3,006
Welcome and here you go.
Cartridge : 7 mm Rem. Mag.
Bullet : .284, 160, NOS CT PartGold 52150
Cartridge O.A.L. L6: 3.290 inch or 83.57 mm
Barrel Length : 24.0 inch or 609.6 mm
Powder : Alliant Reloder-22
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 76 52.80 2380 2013 30548 10604 91.5 1.616
-18.0 78 54.12 2439 2113 32530 10943 92.7 1.577
-16.0 80 55.44 2497 2216 34643 11271 93.8 1.538
-14.0 82 56.76 2556 2321 36896 11587 94.9 1.500
-12.0 84 58.08 2615 2429 39296 11890 95.8 1.463
-10.0 86 59.40 2673 2539 41826 12177 96.7 1.426
-08.0 87 60.72 2732 2652 44494 12449 97.4 1.390
-06.0 89 62.04 2791 2767 47325 12702 98.1 1.349
-04.0 91 63.36 2849 2883 50335 12937 98.7 1.311
-02.0 93 64.68 2907 3002 53536 13152 99.2 1.272 ! Near Maximum !
+00.0 95 66.00 2965 3123 56940 13345 99.5 1.236 ! Near Maximum !
+02.0 97 67.32 3022 3245 60564 13517 99.8 1.201 ! Near Maximum !
+04.0 99 68.64 3079 3369 64422 13664 99.9 1.167 !DANGEROUS LOAD-DO NOT USE!
+06.0 101 69.96 3136 3494 68533 13787 100.0 1.135 !DANGEROUS LOAD-DO NOT USE!
+08.0 103 71.28 3192 3620 72916 13896 100.0 1.103 !DANGEROUS LOAD-DO NOT USE!
+10.0 105 72.60 3248 3748 77594 14001 100.0 1.072 !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 95 66.00 3096 3406 68198 12917 100.0 1.142 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 95 66.00 2779 2744 45882 13118 94.7 1.360
Cartridge : 7 mm Rem. Mag.
Bullet : .284, 160, NOS CT PartGold 52150
Cartridge O.A.L. L6: 3.290 inch or 83.57 mm
Barrel Length : 24.0 inch or 609.6 mm
Powder : Alliant Reloder-22
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 76 52.80 2380 2013 30548 10604 91.5 1.616
-18.0 78 54.12 2439 2113 32530 10943 92.7 1.577
-16.0 80 55.44 2497 2216 34643 11271 93.8 1.538
-14.0 82 56.76 2556 2321 36896 11587 94.9 1.500
-12.0 84 58.08 2615 2429 39296 11890 95.8 1.463
-10.0 86 59.40 2673 2539 41826 12177 96.7 1.426
-08.0 87 60.72 2732 2652 44494 12449 97.4 1.390
-06.0 89 62.04 2791 2767 47325 12702 98.1 1.349
-04.0 91 63.36 2849 2883 50335 12937 98.7 1.311
-02.0 93 64.68 2907 3002 53536 13152 99.2 1.272 ! Near Maximum !
+00.0 95 66.00 2965 3123 56940 13345 99.5 1.236 ! Near Maximum !
+02.0 97 67.32 3022 3245 60564 13517 99.8 1.201 ! Near Maximum !
+04.0 99 68.64 3079 3369 64422 13664 99.9 1.167 !DANGEROUS LOAD-DO NOT USE!
+06.0 101 69.96 3136 3494 68533 13787 100.0 1.135 !DANGEROUS LOAD-DO NOT USE!
+08.0 103 71.28 3192 3620 72916 13896 100.0 1.103 !DANGEROUS LOAD-DO NOT USE!
+10.0 105 72.60 3248 3748 77594 14001 100.0 1.072 !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 95 66.00 3096 3406 68198 12917 100.0 1.142 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 95 66.00 2779 2744 45882 13118 94.7 1.360
I just worked up some loads last night and shot today. I'm shooting these out of a Ruger M77 with a 24" barrel.
100 yds
160 ballistic tip
H 4831 powder
58.O grains 2 1/2" grouping 3 shots
58.5 grains 2 1/2" grouping 3 shots
59.0 grains 2.0" grouping 3 shots
59.5 grains 1 1/4" grouping 3 shots
60.0 grains 1.0" grouping 3 shots
I'll try to fine tune now at 60.0 to 60.5 grains. I think that 60.0 will probably be the best load. Then I'm going to see how the 160 Partition shoots at that powder load.
100 yds
160 ballistic tip
H 4831 powder
58.O grains 2 1/2" grouping 3 shots
58.5 grains 2 1/2" grouping 3 shots
59.0 grains 2.0" grouping 3 shots
59.5 grains 1 1/4" grouping 3 shots
60.0 grains 1.0" grouping 3 shots
I'll try to fine tune now at 60.0 to 60.5 grains. I think that 60.0 will probably be the best load. Then I'm going to see how the 160 Partition shoots at that powder load.
YoteSmoker
Handloader
- Oct 3, 2006
- 1,602
- 0
I found a load that is phenominally accurate in my m70 shooting the regular 160 partiition with 63.0 RL-22 , Fed 215M primers, WW brass OAL 3.290 Chronied right at 2900 fps. Sunk 5 shot group into a half inch at 100 yds. This is the elk load for me!
Guy Miner
Master Loader
- Apr 6, 2006
- 17,749
- 5,829
Working up towards 63 - 65 gr of Reloader 22 with a 160 should yield good results. It certainly has for me! :grin:
remingtonman_25_06
Handloader
- Nov 17, 2005
- 2,807
- 402
61g of RL-22 has been the magic number for me with 160g bullets. If I go up any more in powder charge, the groups start to open up. Kinda sucks, because RL-22 shoots the best on the low end of the powder scale for me.. I"m only getting 2850-2900fps w/160's. I would LOVE to get 3000fps and keep the .5" groups I"m getting with RL-22, but when I go past 61g, I"ve tested to 65g, accuracy opens up to about 1"..
I bet my 7 WSM shoots the 160g faster and just as accurate as my 7 RM. I"ll have to load a few up and find out for myself..
I bet my 7 WSM shoots the 160g faster and just as accurate as my 7 RM. I"ll have to load a few up and find out for myself..
- Thread starter
- #12
