thatmikeguy
Regular
- Location
- Steinbach, Manitoba
Lol
7mm Magnum powder choices
- Thread starter thatmikeguy
- Start date
thatmikeguy
Regular
- Location
- Steinbach, Manitoba
Seems like a mild load.
I recently used imr4831 and 160 Partitions for a friend. Started to show pressure before max book but shot nicely. Didn’t chrony it. Have also loaded imr4350 with 160 Partitions and that shot very well too, but had pressure signs early in the ladder testing. Both cases same rifle. I’m more of an accuracy than speed guy, also want to try H1000 and rl26 or rl25, I think this rifle will shoot well with one of those maybe both, with those heavier bullets.There’s some good load data now for all of the slower powders.
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. RJ
here's a top end 7mm Rem Mag load, from a 26" barrel
150gr Barnes TTSX
67.4grs IMR 7828ssc
150gr Barnes TTSX
67.4grs IMR 7828ssc
Code:
[TABLE="width: 1088"]
[TR]
[TD]Stats - Average[/TD]
[TD="align: right"]3206.82[/TD]
[TD]fps[/TD]
[TD="colspan: 2"] [/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
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[TD][/TD]
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[TD][/TD]
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[/TR]
[TR]
[TD]Stats - Highest[/TD]
[TD="align: right"]3254.85[/TD]
[TD]fps[/TD]
[TD="colspan: 2"] [/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
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[/TR]
[TR]
[TD]Stats - Lowest[/TD]
[TD="align: right"]3169.8[/TD]
[TD]fps[/TD]
[TD="colspan: 2"] [/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
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[TD][/TD]
[TD][/TD]
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[TD][/TD]
[TD][/TD]
[/TR]
[TR]
[TD]Stats - Ext. Spread[/TD]
[TD="align: right"]85.05[/TD]
[TD]fps[/TD]
[TD="colspan: 2"] [/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
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[TD][/TD]
[TD][/TD]
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[TD][/TD]
[TD][/TD]
[/TR]
[TR]
[TD]Stats - Std. Dev[/TD]
[TD="align: right"]26.84[/TD]
[TD]fps[/TD]
[TD="colspan: 2"] [/TD]
[TD][/TD]
[TD][/TD]
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[/TR]
[TR]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
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[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR]
[TD]Shot ID[/TD]
[TD]V0[/TD]
[TD]V25[/TD]
[TD]V50[/TD]
[TD]V75[/TD]
[TD]V100[/TD]
[TD]V150[/TD]
[TD]Ke0[/TD]
[TD]Ke25[/TD]
[TD]Ke50[/TD]
[TD]Ke75[/TD]
[TD]Ke100[/TD]
[TD]Ke150[/TD]
[TD]PF25[/TD]
[TD]Proj. Weight[/TD]
[TD]Date[/TD]
[TD]Time[/TD]
[/TR]
[TR]
[TD="align: right"]1[/TD]
[TD="align: right"]3232[/TD]
[TD="align: right"]3181[/TD]
[TD="align: right"]3128[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]3477[/TD]
[TD="align: right"]3370[/TD]
[TD="align: right"]3257[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]477.15[/TD]
[TD="align: right"]150[/TD]
[TD="align: right"]4/30/16[/TD]
[TD="align: right"]6:43:32[/TD]
[/TR]
[TR]
[TD="align: right"]2[/TD]
[TD="align: right"]3189[/TD]
[TD="align: right"]3134[/TD]
[TD="align: right"]3084[/TD]
[TD="align: right"]3031[/TD]
[TD="align: right"]2983[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]3385[/TD]
[TD="align: right"]3271[/TD]
[TD="align: right"]3166[/TD]
[TD="align: right"]3058[/TD]
[TD="align: right"]2964[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]470.1[/TD]
[TD="align: right"]150[/TD]
[TD="align: right"]4/30/16[/TD]
[TD="align: right"]6:44:05[/TD]
[/TR]
[TR]
[TD="align: right"]3[/TD]
[TD="align: right"]3209[/TD]
[TD="align: right"]3159[/TD]
[TD="align: right"]3108[/TD]
[TD="align: right"]3057[/TD]
[TD="align: right"]3009[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]3429[/TD]
[TD="align: right"]3322[/TD]
[TD="align: right"]3216[/TD]
[TD="align: right"]3111[/TD]
[TD="align: right"]3014[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]473.85[/TD]
[TD="align: right"]150[/TD]
[TD="align: right"]4/30/16[/TD]
[TD="align: right"]7:22:25[/TD]
[/TR]
[TR]
[TD="align: right"]4[/TD]
[TD="align: right"]3190[/TD]
[TD="align: right"]3138[/TD]
[TD="align: right"]3086[/TD]
[TD="align: right"]3034[/TD]
[TD="align: right"]2984[/TD]
[TD="align: right"]2882[/TD]
[TD="align: right"]3388[/TD]
[TD="align: right"]3279[/TD]
[TD="align: right"]3171[/TD]
[TD="align: right"]3065[/TD]
[TD="align: right"]2965[/TD]
[TD="align: right"]2766[/TD]
[TD="align: right"]470.7[/TD]
[TD="align: right"]150[/TD]
[TD="align: right"]4/30/16[/TD]
[TD="align: right"]7:22:49[/TD]
[/TR]
[TR]
[TD="align: right"]5[/TD]
[TD="align: right"]3170[/TD]
[TD="align: right"]3120[/TD]
[TD="align: right"]3070[/TD]
[TD="align: right"]3018[/TD]
[TD="align: right"]2960[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]3345[/TD]
[TD="align: right"]3242[/TD]
[TD="align: right"]3137[/TD]
[TD="align: right"]3033[/TD]
[TD="align: right"]2918[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]468[/TD]
[TD="align: right"]150[/TD]
[TD="align: right"]4/30/16[/TD]
[TD="align: right"]7:23:13[/TD]
[/TR]
[TR]
[TD="align: right"]6[/TD]
[TD="align: right"]3255[/TD]
[TD="align: right"]3203[/TD]
[TD="align: right"]3151[/TD]
[TD="align: right"]3099[/TD]
[TD="align: right"]3047[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]3527[/TD]
[TD="align: right"]3415[/TD]
[TD="align: right"]3305[/TD]
[TD="align: right"]3198[/TD]
[TD="align: right"]3091[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]480.45[/TD]
[TD="align: right"]150[/TD]
[TD="align: right"]4/30/16[/TD]
[TD="align: right"]7:28:45[/TD]
[/TR]
[TR]
[TD="align: right"]7[/TD]
[TD="align: right"]3191[/TD]
[TD="align: right"]3142[/TD]
[TD="align: right"]3092[/TD]
[TD="align: right"]3041[/TD]
[TD="align: right"]2991[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]3390[/TD]
[TD="align: right"]3287[/TD]
[TD="align: right"]3182[/TD]
[TD="align: right"]3078[/TD]
[TD="align: right"]2979[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]471.3[/TD]
[TD="align: right"]150[/TD]
[TD="align: right"]4/30/16[/TD]
[TD="align: right"]7:29:07[/TD]
[/TR]
[TR]
[TD="align: right"]8[/TD]
[TD="align: right"]3196[/TD]
[TD="align: right"]3147[/TD]
[TD="align: right"]3097[/TD]
[TD="align: right"]3046[/TD]
[TD="align: right"]2994[/TD]
[TD="align: right"]2902[/TD]
[TD="align: right"]3402[/TD]
[TD="align: right"]3297[/TD]
[TD="align: right"]3193[/TD]
[TD="align: right"]3089[/TD]
[TD="align: right"]2985[/TD]
[TD="align: right"]2804[/TD]
[TD="align: right"]472.05[/TD]
[TD="align: right"]150[/TD]
[TD="align: right"]4/30/16[/TD]
[TD="align: right"]7:29:22[/TD]
[/TR]
[TR]
[TD="align: right"]9[/TD]
[TD="align: right"]3249[/TD]
[TD="align: right"]3196[/TD]
[TD="align: right"]3145[/TD]
[TD="align: right"]3094[/TD]
[TD="align: right"]3042[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]3514[/TD]
[TD="align: right"]3401[/TD]
[TD="align: right"]3293[/TD]
[TD="align: right"]3188[/TD]
[TD="align: right"]3080[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]479.4[/TD]
[TD="align: right"]150[/TD]
[TD="align: right"]4/30/16[/TD]
[TD="align: right"]7:37:47[/TD]
[/TR]
[TR]
[TD="align: right"]10[/TD]
[TD="align: right"]3198[/TD]
[TD="align: right"]3146[/TD]
[TD="align: right"]3094[/TD]
[TD="align: right"]3043[/TD]
[TD="align: right"]2992[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]3404[/TD]
[TD="align: right"]3295[/TD]
[TD="align: right"]3188[/TD]
[TD="align: right"]3083[/TD]
[TD="align: right"]2981[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]471.9[/TD]
[TD="align: right"]150[/TD]
[TD="align: right"]4/30/16[/TD]
[TD="align: right"]7:38:12[/TD]
[/TR]
[TR]
[TD="align: right"]11[/TD]
[TD="align: right"]3198[/TD]
[TD="align: right"]3145[/TD]
[TD="align: right"]3094[/TD]
[TD="align: right"]3041[/TD]
[TD="align: right"]2990[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]3405[/TD]
[TD="align: right"]3294[/TD]
[TD="align: right"]3186[/TD]
[TD="align: right"]3080[/TD]
[TD="align: right"]2976[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]471.75[/TD]
[TD="align: right"]150[/TD]
[TD="align: right"]4/30/16[/TD]
[TD="align: right"]7:38:33[/TD]
[/TR]
[/TABLE]thatmikeguy
Regular
- Location
- Steinbach, Manitoba
That's nice. I like it.
thatmikeguy
Regular
- Location
- Steinbach, Manitoba
After much reading and studying I decided that I needed to carefully work up my powder charge a little further. It seems I had not reached max pressure for my components and rifle. I made it up to 68 grains of IMR4831. My best loads were 66.5 and 67.0 and 67.5 grains. 66.5 gave an incredible 1/4 group at 3050 fps with an ES of only 5fps (for 3 shots) both the next 2 charge weights produced 1/2 moa and 67.5 grains had an ES of just 15 fps at 3100 fps. I found the sweet zone. I shot tighter groups with my 7mm magnum than my 243. Maybe the 243 needs more work.
Remember to do your own work up. Don't just copy someone else's loads. This is slightly over modern maximum load data.
Remember to do your own work up. Don't just copy someone else's loads. This is slightly over modern maximum load data.
- Location
- Kitscoty Alberta
7mm A bolt browning LH with boss system
I’ve been using H4831 for years 66 grs with 150 gr Barnes for moose,deer,elk,
also use H4831 with 110 gr Barnes for coyotes can’t remember the load right now
Always worked for me when I do my part , not so good when I don’t pay attention on my part
I’ve been using H4831 for years 66 grs with 150 gr Barnes for moose,deer,elk,
also use H4831 with 110 gr Barnes for coyotes can’t remember the load right now
Always worked for me when I do my part , not so good when I don’t pay attention on my part
thatmikeguy
Regular
- Location
- Steinbach, Manitoba
I'd love to try it but my local gun shop doesn't have any alliant powders. I did pick up some speer 160 grand slams and some H1000 and H4831. It hurts the wallet to buy 2 cans of powder but they were there and I was there and will they be there later.....
thatmikeguy
Regular
- Location
- Steinbach, Manitoba
I had to load a little hotter than the manual specs. Now it shoots fantastic. Link for target picture included.
https://www.dropbox.com/s/zeseezqrl6c9di7/20230212_094716.jpg?dl=0
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