Quickload request 7mm-08 180 eldm

[BruceP]

Thank you will probably load out to 2.950 though. Should help.

That was the default COAL. QuickLoad will show a lower pressure at a longer length. Just start low and work up.

 

[Justramit]

Is your barrel throated for a 2.950" oal with the 180gr Eld-M? You may not be able to go that long otherwise. Another .150" of powder space could change that list a bit though. I'd say those are basically starting loads as well. I doubt you will see any pressure signs until you get above 60,000psi...

No can't quit go that long I checked today and 2.910 at the lands with 180. With 162 is 2.950 at the lands.

 

[Justramit]

Finally going to start playing with this, have some free time. I measured wrong first time coal to lands is 2.985 with the 180. So I should be able to go 2.950

 

[SJB358]

I kinda like it myself. Everyone poo poos the little 7-08 with a 180 at 2500-2600 but for YEARS Marines killed Americas enemies with 175 MKs in a 7.62 bolt gun with the 175 doing a very small amount faster, if any faster from the shorter suppressed weapons.

A 35 Whelen with a 250 made a lot of meat at 2400-2500FPS, The 338 Win Mag loaded with 250’s barely ever broke 2600 in most factory loads. No one or many I knew felt unarmered out to 300 yards. Your 7-08 bas about 2x the BC as either of the above rounds and will hold onto its FPS real well.

Looking forward to seeing your results.

I used the 212’s at 2700 from an 06 a few years back.. took less than a mil at 400 yards and I knew I could slip a wind I wasn’t going to get perfect.

 

[hunter24605]

If you have RL-17, I think that would get you to 2500 safely....It sure is the ticket in the 140 class in our 7-08's for speed and accuracy. Curious to see what you find out.

 

[Justramit]

Well I finally got out to try it. Loaded to 2.94 COAL and used Ramshot Hunter. 46.1 grains was highest I went and was 2550 fps. Accuracy node was 45.5 grains at 2520 fps. This is with Mcgowen 8 twist 22" barrel.

 

[gerry]

Sounds like a good load, with that high b.c. at 2520 fps it's going to do much better than most would think.

 

[salmonchaser]

Not quite apples and oranges but the 7x57 with 175s played hell with Teddy Roosevelt and the rough riders as well as killing every thing in Africa up to and including elephant. Personally I saw one shoot through two caribou at about 200 yards. Going heavy and going long sure seems to be the trend, i‘d be curious to see how it stacks up against the 162 class bullets in real life.
Saw your velocity numbers how did it shoot?

 

[JD338]

Well I finally got out to try it. Loaded to 2.94 COAL and used Ramshot Hunter. 46.1 grains was highest I went and was 2550 fps. Accuracy node was 45.5 grains at 2520 fps. This is with Mcgowen 8 twist 22" barrel.

That's decent speed. What kind of accuracy did you get?

JD338

 

[SJB358]

Not quite apples and oranges but the 7x57 with 175s played hell with Teddy Roosevelt and the rough riders as well as killing every thing in Africa up to and including elephant. Personally I saw one shoot through two caribou at about 200 yards. Going heavy and going long sure seems to be the trend, i‘d be curious to see how it stacks up against the 162 class bullets in real life.
Saw your velocity numbers how did it shoot?

I have always had an inkling to find a Kimber Montana or Classic in an 84L (270-30/06) and rebarrel to a 7mm Mauser with an 8 twist. Being as that action would really let a guy seat a long 175/180 class bullet out pretty long it would seem to be an excellent performer and nice to carry when a fella was wandering around for the day.

Cartridge : 7 x 57 mm Mauser (SAAMI)
Bullet : .284, 175, Nosler AccuBond LR 58517
Useable Case Capaci: 52.030 grain H2O = 3.378 cm³
Cartridge O.A.L. L6: 3.250 inch = 82.55 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : Alliant Reloder-26 *C

Predicted data by increasing and decreasing the given charge,
incremented in steps of 0.909% 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

-09.1 97 50.00 2522 2472 44713 11594 99.2 1.327
-08.2 98 50.50 2550 2528 46281 11675 99.4 1.306
-07.3 99 51.00 2579 2584 47913 11748 99.6 1.285
-06.4 100 51.50 2607 2641 49613 11815 99.7 1.264
-05.5 101 52.00 2635 2699 51380 11874 99.9 1.244
-04.5 102 52.50 2664 2757 53222 11926 99.9 1.224
-03.6 103 53.00 2692 2816 55140 11969 100.0 1.204
-02.7 104 53.50 2720 2875 57146 12006 100.0 1.185 ! Near Maximum !
-01.8 105 54.00 2748 2934 59234 12040 100.0 1.166 ! Near Maximum !
-00.9 106 54.50 2776 2994 61415 12072 100.0 1.147 ! Near Maximum !
+00.0 107 55.00 2803 3054 63691 12103 100.0 1.128 ! Near Maximum !
+00.9 108 55.50 2831 3115 66068 12133 100.0 1.110 !DANGEROUS LOAD-DO NOT USE!
+01.8 109 56.00 2859 3176 68552 12162 100.0 1.093 !DANGEROUS LOAD-DO NOT USE!
+02.7 110 56.50 2886 3237 71151 12189 100.0 1.075 !DANGEROUS LOAD-DO NOT USE!
+03.6 111 57.00 2914 3299 73871 12215 100.0 1.058 !DANGEROUS LOAD-DO NOT USE!
+04.5 112 57.50 2941 3362 76718 12240 100.0 1.041 !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 107 55.00 2929 3333 81241 11522 100.0 1.032 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 107 55.00 2607 2642 49410 12486 97.4 1.258


Kinda looks like if you could seat something out around 3.250 or so, 2750-2800 would be possible loaded up with some decent powders. Talk about a combo that would have some reach and wouldn't knock your hat off every trigger press.

 

[salmonchaser]

Ive yet to play with the 175 in my #1 but with reloader 26 55 grains was about all I could get in the case, it was just about spilling out.
what would reloader 17 look like.

 

[SJB358]

Ive yet to play with the 175 in my #1 but with reloader 26 55 grains was about all I could get in the case, it was just about spilling out.
what would reloader 17 look like.

You need a longer drop tube Don

Cartridge : 7 x 57 mm Mauser (SAAMI)
Bullet : .284, 175, Nosler AccuBond LR 58517
Useable Case Capaci: 52.030 grain H2O = 3.378 cm³
Cartridge O.A.L. L6: 3.250 inch = 82.55 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : Alliant Reloder-17 *T

Predicted data by increasing and decreasing the given charge,
incremented in steps of 1.031% 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

-10.3 86 43.50 2464 2360 45506 10163 100.0 1.321
-09.3 87 44.00 2490 2410 47065 10225 100.0 1.301
-08.2 88 44.50 2516 2461 48679 10284 100.0 1.281
-07.2 89 45.00 2542 2511 50350 10342 100.0 1.262
-06.2 90 45.50 2568 2562 52080 10400 100.0 1.242
-05.2 91 46.00 2593 2614 53873 10457 100.0 1.224
-04.1 92 46.50 2619 2665 55730 10513 100.0 1.205 ! Near Maximum !
-03.1 93 47.00 2644 2717 57656 10569 100.0 1.187 ! Near Maximum !
-02.1 94 47.50 2669 2769 59650 10623 100.0 1.170 ! Near Maximum !
-01.0 95 48.00 2694 2821 61721 10677 100.0 1.152 ! Near Maximum !
+00.0 96 48.50 2719 2874 63866 10730 100.0 1.135 ! Near Maximum !
+01.0 97 49.00 2744 2927 66094 10782 100.0 1.118 !DANGEROUS LOAD-DO NOT USE!
+02.1 98 49.50 2769 2980 68403 10833 100.0 1.102 !DANGEROUS LOAD-DO NOT USE!
+03.1 99 50.00 2794 3033 70803 10883 100.0 1.086 !DANGEROUS LOAD-DO NOT USE!
+04.1 100 50.50 2819 3087 73290 10932 100.0 1.070 !DANGEROUS LOAD-DO NOT USE!
+05.2 101 51.00 2843 3141 75862 10980 100.0 1.055 !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 48.50 2807 3061 77618 10348 100.0 1.056 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 96 48.50 2585 2597 51363 11224 99.6 1.241


I'd run 17 if I had it... It has been excellent for me and the 7x57..

 

[Justramit]

That's decent speed. What kind of accuracy did you get?

JD338

Only shot 3 shot group at 100. All touching.

 

[salmonchaser]

Only shot 3 shot group at 100. All touching.

Very good, I’d say you’re getting pretty damn close. Well done.