Test Results for Swiss 7.5x55. 150 gr FMJ and 175 SMKs. IMR 4064, Win 760.

El Rojo · November 10, 2002, 03:34 PM

Ok, well I haven't actually gone out and tested the loads, but I am so stoked about finally loading up that shiney Swiss Brass that Pierre set up for us, I had to post early. Today is a beatiful day outside and I should go test the loads, but I am going motorcycle riding with a friend from church instead. Here are the stats for my loads, after I shoot them, I will post results with pictures of the groups. I can't wait! Good thing Veteran's day is tomorrow!

Load #1

Bullet: Sierra 175 gr. HPBT Moly
Powder: IMR 4064 (6 rounds @ 40.0 grs., 6 @ 41.1 grs., 6@ 42.0 grs.)
Brass: The Swiss Match stuff with the "T" stamped on it.
Primer: Federal GM210M
Trim Length: Not-trimmed, 2.175"
OAL: 2.965"

Load #2

Bullet: Sierra 150 gr. FMJ/BT
Powder: IMR 4064 (6 rounds @ 44.0 grs., 6 @ 45.0 grs.)
Brass: The Swiss Match stuff with the "T" stamped on it.
Primer: Federal GM210M
Trim Length: Not-trimmed, 2.175"
OAL: 2.900"

Load #3

Bullet: Sierra 150 gr. FMJ/BT
Powder: Winchester 760 (6 rounds @ 49.0 grs., 6 @ 50.0 grs., 6 @ 51.0 grs., 6 @ 52.0 grs.)
Brass: The Swiss Match stuff with the "T" stamped on it.
Primer: Federal GM210M
Trim Length: Not-trimmed, 2.175"
OAL: 2.900"

I predict the 175s will be most accurate. I have no idea how the 150s are going to do. I suspect they won't be that great, but I also was enthusiastic that Bill Simon would beat Gray Davis for the PRK Governor's race. I can always dream. When you have about 8500 150 gr FMJBT bullets, you might as well try a load of them with every .308 you have.

El Rojo · November 12, 2002, 02:16 AM

Here are the results. My stupid version of Microsoft Picture It! 99 is acting up and keeps crashing on me when I attempt to add text, otherwise I would have labeled each picture. Since it won't let me, I will have to post the data below the pictures.

The day was great. Partly cloudy. Cool tempratures. I found a new spot to shoot at an old oil well location that had a level slab of concrete to set up my shooting table and chronograph on. Plus my wife decided to come along too. So hey, I can't complain about that.

Anyway on to the data. First group of the day...GP11.

GP11 at 100 yards. Ave Vel 2548 FPS. 4.192"

Sierra 175 gr. HPBT Match w/ 40.0 grains of IMR 4064 at 100 yards. Ave Vel 2319 FPS. 3.317"

Sierra 175 gr. HPBT Match w/ 41.0 grains of IMR 4064 at 100 yards. Ave Vel 2372 FPS. 4.492" or minus the one flyer 2.442"

El Rojo · November 12, 2002, 02:17 AM

Sierra 175 gr. HPBT Match w/ 42.0 grains of IMR 4064 at 100 yards. Ave Vel 2410 FPS. 5.442"

Sierra 150 gr. FMJ/BT w/ 44.0 grains of IMR 4064 at 100 yards. Ave Vel 2678 FPS. 4.067"

Sierra 150 gr. FMJ/BT w/ 45.0 grains of IMR 4064 at 100 yards. Ave Vel 2713 FPS. 2.317"

Sierra 150 gr. FMJ/BT w/ 49.0 grains of Win 760 at 100 yards. Ave Vel 2629 FPS. 3.692"

Sierra 150 gr. FMJ/BT w/ 50.0 grains of Win 760 at 100 yards. Ave Vel 2644 FPS. 4.442" or minus the one flyer 2.067"

Sierra 150 gr. FMJ/BT w/ 51.0 grains of Win 760 at 100 yards. Ave Vel 2697 FPS. 1.942"!!!

Sierra 150 gr. FMJ/BT w/ 52.0 grains of Win 760 at 100 yards. Ave Vel 2728 FPS. 3.692" or minus the two flyers 1.067"

So my conclusions at the end of this testing was that the Sierra 150 gr. FMJ/BT that I bought bulk (10,000!) from Graff and Sons are fairly accurate in my K-31. I think I just had some operator error with the 175 gr. bullets. The one thing I would do differently when loading up a good sized batch of the 150 gr. FMJ/BT with some Win 760 is that I would seat them a little further down. When closing the bolt on the K-31 I really had to rap it forward. I have them seated at about 2.900". The book recommends 2.890" if I recall correctly.

Your comments are welcome. I hope you enjoy this data half as much as I enjoyed brining it to you.

Fred Hansen · November 12, 2002, 02:58 AM

Dude! This rocks! A buddy of mine just gave me an absolute gem of a K-31 as a "thank you" for my help in fixing his well house (crunched by a tree limb). He also gave me 100 brand new Norma cases. As soon as I get some dies, I'm going to give your loads a try. Thanks!

unomauser · November 14, 2002, 10:28 PM

Rojo,
Thanks for shearing your information with us and I wonder if you can step a little forward and letting us know your chronograph data, such as standard deviation, extreme spread etc.
Thanks again

El Rojo · November 15, 2002, 09:05 PM

I am at the wife's school right now and so I will post it when I get home. I have it all in MS Excell. I will get it to you soon.

Gewehr98 · November 15, 2002, 09:13 PM

I've found my 1911 Schmidt Rubin (predecessor to your K-31) likes the 168gr Sierra MatchKings, on top of 42.0gr of IMR4895. That's using Norma brass and Federal 210M primers. My velocities are gonna be different than what your K-31 generates, by virtue of the 30" barrel of the 1911.

El Rojo · November 16, 2002, 12:29 PM

Honestly, I don't feel like making all of this below all stylishly correct. Here are the basic info you are going to want to know. Date, Manufacturer, Weight, Bullet Type, Powder. Then it goes to S1 - S12, which simply means shot number. So the last 4 digit number is going to be the Average, then Range, Standard Deviation, Low, and High. If you want, I will send you the Excel file. UnoMauser, your e-mail is already on its way. Just ask me and I will share. Enjoy.

Date Man. Weight Bullet Type Powder S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 S11 S12 AVE RNG SD Low High
11/11/02 Sierra 150 gr. FMJ/BT IMR 4064 44.0 gr. 2687 2659 2686 2681 2677 2678 28 11.36 2659 2687
11/11/02 Sierra 150 gr. FMJ/BT IMR 4064 45.0 gr. 2715 2713 2716 2706 2723 2707 2713 17 6.28 2706 2723
11/11/02 Sierra 150 gr. FMJ/BT Win 760 49.0 gr. 2620 2640 2662 2598 2622 2632 2629 64 21.49 2598 2662
11/11/02 Sierra 150 gr. FMJ/BT Win 760 50.0 gr. 2650 2629 2623 2643 2654 2664 2644 41 15.51 2623 2664
11/11/02 Sierra 150 gr. FMJ/BT Win 760 51.0 gr. 2753 2671 2682 2674 2694 2706 2697 82 30.51 2671 2753
11/11/02 Sierra 150 gr. FMJ/BT Win 760 52.0 gr. 2745 2702 2721 2745 2723 2734 2728 43 16.51 2702 2745
11/11/02 Sierra 175 gr. HPBT Moly Match IMR 4064 40.0 gr. 2267 2303 2325 2352 2337 2327 2319 85 29.90 2267 2352
11/11/02 Sierra 175 gr. HPBT Moly Match IMR 4064 41.0 gr. 2392 2386 2376 2365 2353 2361 2372 39 15.12 2353 2392
11/11/02 Sierra 175 gr. HPBT Moly Match IMR 4064 42.0 gr. 2444 2430 2391 2406 2404 2386 2410 58 22.56 2386 2444
02/23/02 Swiss 174 gr. FMJ/BT GP11 Factory Loads 2486 2472 2489 2496 2473 2472 2482 2517 2426 2479 91 24.58 2426 2517
05/11/02 Swiss 174 gr. FMJ/BT GP11 Factory Loads 2566 2534 2567 2547 2489 2578 2543 2581 2547 2578 2547 2557 2553 92 25.37 2489 2581
11/11/02 Swiss 174 gr. FMJ/BT GP11 Factory Loads 2574 2552 2563 2512 2538 2549 2548 62 21.51 2512 2574
11/11/02 Swiss 174 gr. FMJ/BT GP11 Factory Loads 2547 2521 2534 2518 2502 2499 2520 48 18.41 2499 2547

Long Path · November 16, 2002, 01:20 PM

LOVE the pictorals, El Rojo! Extremely informative.

It's instructive that you can clearly stick with the 150g FMJs and quit spending money on the match bullets. It's also interesting that, for the most part, the hotter you went with the 150s, the tighter the groups were.

El Rojo · November 16, 2002, 05:53 PM

No thank you! You guys are the reason I do it. TFL is my family I never knew.

Fred Hansen · November 16, 2002, 09:08 PM

I got to shoot my K-31 Wed. night! Man do I love this rifle!

I am not a great rifle shot, but this thing is phenomenal. I was using the Swiss military ammo that came with it, and with open sights I was blasting little pieces of clay birds off the bank @ 80+ yds.

As soon as I can afford a set of dies, I'm going to try these loads. God I love guns!

November 12, 2002, 02:58 AM	#4
Fred Hansen Senior Member Join Date: May 30, 2001 Location: The middle of WWIII Posts: 3,335	Dude! This rocks! A buddy of mine just gave me an absolute gem of a K-31 as a "thank you" for my help in fixing his well house (crunched by a tree limb). He also gave me 100 brand new Norma cases. As soon as I get some dies, I'm going to give your loads a try. Thanks! __________________ "This started out as a documentary on gun violence in America, but the largest mass murder in our history was just committed -- without the use of a single gun! Not a single bullet fired! No bomb was set off, no missile was fired, no weapon (i.e., a device that was solely and specifically manufactured to kill humans) was used. A boxcutter! -- I can't stop thinking about this. A thousand gun control laws would not have prevented this massacre. What am I doing?" Michael Moore

November 14, 2002, 10:28 PM	#5
unomauser Junior Member Join Date: November 13, 2002 Location: Riverside, CA Posts: 1	Test Results for Swiss 7.5x55. 150 gr FMJ and 175 SMKs. IMR 4064, Win 760. Rojo, Thanks for shearing your information with us and I wonder if you can step a little forward and letting us know your chronograph data, such as standard deviation, extreme spread etc. Thanks again

November 15, 2002, 09:05 PM	#6
El Rojo Senior Member Join Date: February 4, 2000 Location: People's Republik of Kalifornia Posts: 2,057	Sure can! I am at the wife's school right now and so I will post it when I get home. I have it all in MS Excell. I will get it to you soon. __________________ Get Some!

November 15, 2002, 09:13 PM	#7
Gewehr98 Senior Member Join Date: June 30, 2000 Location: Token Creek, WI Posts: 4,067	Don't stop experimenting yet, El Rojo! I've found my 1911 Schmidt Rubin (predecessor to your K-31) likes the 168gr Sierra MatchKings, on top of 42.0gr of IMR4895. That's using Norma brass and Federal 210M primers. My velocities are gonna be different than what your K-31 generates, by virtue of the 30" barrel of the 1911. __________________ "Bother", said Pooh, as he chambered another round... Neural Misfires

November 16, 2002, 12:29 PM	#8
El Rojo Senior Member Join Date: February 4, 2000 Location: People's Republik of Kalifornia Posts: 2,057	Honestly, I don't feel like making all of this below all stylishly correct. Here are the basic info you are going to want to know. Date, Manufacturer, Weight, Bullet Type, Powder. Then it goes to S1 - S12, which simply means shot number. So the last 4 digit number is going to be the Average, then Range, Standard Deviation, Low, and High. If you want, I will send you the Excel file. UnoMauser, your e-mail is already on its way. Just ask me and I will share. Enjoy. Date Man. Weight Bullet Type Powder S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 S11 S12 AVE RNG SD Low High 11/11/02 Sierra 150 gr. FMJ/BT IMR 4064 44.0 gr. 2687 2659 2686 2681 2677 2678 28 11.36 2659 2687 11/11/02 Sierra 150 gr. FMJ/BT IMR 4064 45.0 gr. 2715 2713 2716 2706 2723 2707 2713 17 6.28 2706 2723 11/11/02 Sierra 150 gr. FMJ/BT Win 760 49.0 gr. 2620 2640 2662 2598 2622 2632 2629 64 21.49 2598 2662 11/11/02 Sierra 150 gr. FMJ/BT Win 760 50.0 gr. 2650 2629 2623 2643 2654 2664 2644 41 15.51 2623 2664 11/11/02 Sierra 150 gr. FMJ/BT Win 760 51.0 gr. 2753 2671 2682 2674 2694 2706 2697 82 30.51 2671 2753 11/11/02 Sierra 150 gr. FMJ/BT Win 760 52.0 gr. 2745 2702 2721 2745 2723 2734 2728 43 16.51 2702 2745 11/11/02 Sierra 175 gr. HPBT Moly Match IMR 4064 40.0 gr. 2267 2303 2325 2352 2337 2327 2319 85 29.90 2267 2352 11/11/02 Sierra 175 gr. HPBT Moly Match IMR 4064 41.0 gr. 2392 2386 2376 2365 2353 2361 2372 39 15.12 2353 2392 11/11/02 Sierra 175 gr. HPBT Moly Match IMR 4064 42.0 gr. 2444 2430 2391 2406 2404 2386 2410 58 22.56 2386 2444 02/23/02 Swiss 174 gr. FMJ/BT GP11 Factory Loads 2486 2472 2489 2496 2473 2472 2482 2517 2426 2479 91 24.58 2426 2517 05/11/02 Swiss 174 gr. FMJ/BT GP11 Factory Loads 2566 2534 2567 2547 2489 2578 2543 2581 2547 2578 2547 2557 2553 92 25.37 2489 2581 11/11/02 Swiss 174 gr. FMJ/BT GP11 Factory Loads 2574 2552 2563 2512 2538 2549 2548 62 21.51 2512 2574 11/11/02 Swiss 174 gr. FMJ/BT GP11 Factory Loads 2547 2521 2534 2518 2502 2499 2520 48 18.41 2499 2547 __________________ Get Some!

November 10, 2002, 03:34 PM	#1
El Rojo Senior Member Join Date: February 4, 2000 Location: People's Republik of Kalifornia Posts: 2,057	Test Results for Swiss 7.5x55. 150 gr FMJ and 175 SMKs. IMR 4064, Win 760. Ok, well I haven't actually gone out and tested the loads, but I am so stoked about finally loading up that shiney Swiss Brass that Pierre set up for us, I had to post early. Today is a beatiful day outside and I should go test the loads, but I am going motorcycle riding with a friend from church instead. Here are the stats for my loads, after I shoot them, I will post results with pictures of the groups. I can't wait! Good thing Veteran's day is tomorrow! Load #1 Bullet: Sierra 175 gr. HPBT Moly Powder: IMR 4064 (6 rounds @ 40.0 grs., 6 @ 41.1 grs., 6@ 42.0 grs.) Brass: The Swiss Match stuff with the "T" stamped on it. Primer: Federal GM210M Trim Length: Not-trimmed, 2.175" OAL: 2.965" Load #2 Bullet: Sierra 150 gr. FMJ/BT Powder: IMR 4064 (6 rounds @ 44.0 grs., 6 @ 45.0 grs.) Brass: The Swiss Match stuff with the "T" stamped on it. Primer: Federal GM210M Trim Length: Not-trimmed, 2.175" OAL: 2.900" Load #3 Bullet: Sierra 150 gr. FMJ/BT Powder: Winchester 760 (6 rounds @ 49.0 grs., 6 @ 50.0 grs., 6 @ 51.0 grs., 6 @ 52.0 grs.) Brass: The Swiss Match stuff with the "T" stamped on it. Primer: Federal GM210M Trim Length: Not-trimmed, 2.175" OAL: 2.900" I predict the 175s will be most accurate. I have no idea how the 150s are going to do. I suspect they won't be that great, but I also was enthusiastic that Bill Simon would beat Gray Davis for the PRK Governor's race. I can always dream. When you have about 8500 150 gr FMJBT bullets, you might as well try a load of them with every .308 you have. __________________ Get Some!

November 12, 2002, 02:16 AM	#2
El Rojo Senior Member Join Date: February 4, 2000 Location: People's Republik of Kalifornia Posts: 2,057	It is done. Here are the results. My stupid version of Microsoft Picture It! 99 is acting up and keeps crashing on me when I attempt to add text, otherwise I would have labeled each picture. Since it won't let me, I will have to post the data below the pictures. The day was great. Partly cloudy. Cool tempratures. I found a new spot to shoot at an old oil well location that had a level slab of concrete to set up my shooting table and chronograph on. Plus my wife decided to come along too. So hey, I can't complain about that. Anyway on to the data. First group of the day...GP11. GP11 at 100 yards. Ave Vel 2548 FPS. 4.192" Sierra 175 gr. HPBT Match w/ 40.0 grains of IMR 4064 at 100 yards. Ave Vel 2319 FPS. 3.317" Sierra 175 gr. HPBT Match w/ 41.0 grains of IMR 4064 at 100 yards. Ave Vel 2372 FPS. 4.492" or minus the one flyer 2.442" __________________ Get Some!

November 12, 2002, 02:17 AM	#3
El Rojo Senior Member Join Date: February 4, 2000 Location: People's Republik of Kalifornia Posts: 2,057	Sierra 175 gr. HPBT Match w/ 42.0 grains of IMR 4064 at 100 yards. Ave Vel 2410 FPS. 5.442" Sierra 150 gr. FMJ/BT w/ 44.0 grains of IMR 4064 at 100 yards. Ave Vel 2678 FPS. 4.067" Sierra 150 gr. FMJ/BT w/ 45.0 grains of IMR 4064 at 100 yards. Ave Vel 2713 FPS. 2.317" Sierra 150 gr. FMJ/BT w/ 49.0 grains of Win 760 at 100 yards. Ave Vel 2629 FPS. 3.692" Sierra 150 gr. FMJ/BT w/ 50.0 grains of Win 760 at 100 yards. Ave Vel 2644 FPS. 4.442" or minus the one flyer 2.067" Sierra 150 gr. FMJ/BT w/ 51.0 grains of Win 760 at 100 yards. Ave Vel 2697 FPS. 1.942"!!! Sierra 150 gr. FMJ/BT w/ 52.0 grains of Win 760 at 100 yards. Ave Vel 2728 FPS. 3.692" or minus the two flyers 1.067" So my conclusions at the end of this testing was that the Sierra 150 gr. FMJ/BT that I bought bulk (10,000!) from Graff and Sons are fairly accurate in my K-31. I think I just had some operator error with the 175 gr. bullets. The one thing I would do differently when loading up a good sized batch of the 150 gr. FMJ/BT with some Win 760 is that I would seat them a little further down. When closing the bolt on the K-31 I really had to rap it forward. I have them seated at about 2.900". The book recommends 2.890" if I recall correctly. Your comments are welcome. I hope you enjoy this data half as much as I enjoyed brining it to you. __________________ Get Some!

November 16, 2002, 01:20 PM	#9
Long Path Senior Member Join Date: May 31, 1999 Location: N. Texas Posts: 5,899	El Rojo is my new handloading hero. LOVE the pictorals, El Rojo! Extremely informative. It's instructive that you can clearly stick with the 150g FMJs and quit spending money on the match bullets. It's also interesting that, for the most part, the hotter you went with the 150s, the tighter the groups were. __________________ "Welcome to The Firing Line, a virtual community dedicated to the discussion and advancement of responsible firearms ownership."T.F.L. Policy Page Will you, too, be one who stands in the gap? ____________

November 16, 2002, 05:53 PM	#10
El Rojo Senior Member Join Date: February 4, 2000 Location: People's Republik of Kalifornia Posts: 2,057	No thank you! You guys are the reason I do it. TFL is my family I never knew. __________________ Get Some!

November 16, 2002, 09:08 PM	#11
Fred Hansen Senior Member Join Date: May 30, 2001 Location: The middle of WWIII Posts: 3,335	I got to shoot my K-31 Wed. night! Man do I love this rifle! I am not a great rifle shot, but this thing is phenomenal. I was using the Swiss military ammo that came with it, and with open sights I was blasting little pieces of clay birds off the bank @ 80+ yds. As soon as I can afford a set of dies, I'm going to try these loads. God I love guns! __________________ "This started out as a documentary on gun violence in America, but the largest mass murder in our history was just committed -- without the use of a single gun! Not a single bullet fired! No bomb was set off, no missile was fired, no weapon (i.e., a device that was solely and specifically manufactured to kill humans) was used. A boxcutter! -- I can't stop thinking about this. A thousand gun control laws would not have prevented this massacre. What am I doing?" Michael Moore