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zrykhus
New Member

28 Posts

Posted - Feb 28 2011 :  21:37:37  Show Profile Send zrykhus a Private Message  Reply with Quote
My friend is shooting a 7x57 mauser. He wants to shoot a Barnes TSX 120gr bullet. Does anyone have a good load for this bullet in this caliber? Any help would be awesome thanks. :)

Bobo7mmmag
Advanced Member

2548 Posts

Posted - Feb 28 2011 :  22:42:35  Show Profile Send Bobo7mmmag a Private Message  Reply with Quote
I have loaded the TTSX 120 grainer in my Browning 7mm Rem Mag and they run the same speed as 120 grain Hornady HP's and Ballistic Tips. They will Max out before the other though.

Hodgdon H4350 would be a good powder to start with.

Bobo
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zrykhus
New Member

28 Posts

Posted - Mar 01 2011 :  07:56:15  Show Profile Send zrykhus a Private Message  Reply with Quote
Ok awesome thank you for your help. How muck less will the barnes take?
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Paul B
Advanced Member

3268 Posts

Posted - Mar 01 2011 :  13:14:30  Show Profile Send Paul B a Private Message  Reply with Quote
My choice would be either H-414 or W-760. FWIW both powders are the same, just different lots.
I use W-760 in my 7x57 and it's been a great powder in my Winchester M70 Featherweight.
The following is from the barnes manual number 4.

W-760 Start: 46.5 gr. 2777 FPS Maximum: 49.0 gr. 2945 FPS

H-414 Start: 47.0 gr. 2821 FPS Maximum" 49.5 gr. 2965 FPS

Their test rifle had a 24" barrel. Brass was Winchester and the primer a Federal GM210M.

I haven't loaded the 120 gr. TSX for my rifle yet. I just bought two boxes of the 120 gr. bullet and five boxes of the 140 gr. bullets.
Personally, I use the Winchester WLR primer for all my rifle handloads.
I have a custom FN Mauser in 7x57 and I'll probably work up the TSX loads for that rifle. I use Remington brass in the M70 but I'll be using Winchester brass for the Mauser. The Mauser gets some serious heartburn with the loads that work in the M70.
They say ball powders are temperature sensitive but I haven't seen a problem during hunting season where it can be right at freezing or slightly below, at least for the first couple of hours after sunrise. It may be different in it gets a lot colder where you are. I work up my loads during our very hot summers so when it does get cold, there's no worry about the load being too hot. YMMV depending on location.
Paul B.
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Shastaboat
Advanced Member

USA
5085 Posts

Posted - Mar 04 2011 :  13:16:29  Show Profile Send Shastaboat a Private Message  Reply with Quote
I'll give you a couple of my favorite loads in 7x57 1985 Chilian Mauser.
#1 130 gr Speer sp, 45 gr H4895, chronoed at 2990 fps
#2 140 gr Sierra spbt, 45.5 gr IMR 4320, chronoed at 2912 fps
Both of these loads are max in my rifle and my son shoots them in his 98 Chec Mauser but prefers:
#3 139 gr Hornady spbt, 54.5 gr of H4831SC at 2850 fps
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mausermaker1982
New Member



USA
33 Posts

Posted - Mar 11 2011 :  18:11:38  Show Profile  Click to see mausermaker1982's MSN Messenger address Send mausermaker1982 a Private Message  Reply with Quote
My 7x57 hated 4831 or should i say 150gr remington corelocks and 4831. IMR 4350 did perform better with same bullets.
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Paul B
Advanced Member

3268 Posts

Posted - Mar 12 2011 :  10:19:41  Show Profile Send Paul B a Private Message  Reply with Quote
Shastaboat. Those are some pretty darn hot loads for a 95 Mauser.
But then again, I've always wondered about the strength of the 93 and 95 Mausers. What I'm getting at is are they really as weak as some "eggspurts" say they are? I bring this up because a few years ago Kimber made up a bunch of sporters based on 93 Spanish Mausers that were rebarreled and chamber to (GASP!) the .308 Win. So now we have a "weak" gun supposedly limited to 45,000 PSI chambered to a 52,000 PSI round and it's OK? Who knew? Those .308 Mausers were proof tested by the H.P. White Laboratory BTW and pronounced safe. I wish I'd known that back in the mid 70's. I had a beautiful little M93 Mauser that was built up in some small British gunshop that looked for all the world like a .275 Rigby. Fully loaded with sling and scope that little jewel only weight 6.5 pounds and was a dream to carry up on those 8 to 9 thounsand foot mountains where the really big Mule Deer hung out. Because they were considered weak, my handloads were no more powerful than factory loads. One day, I got an offer I couldn't refuse and sold it. Oh well, I have my M70 Featherweight. My custom Mauser is a bit heavier so it usually stays home. I'm on the wrong side of 70 and heavier rifles, especially at altitude no longer thrill me.
Paul B.
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Shastaboat
Advanced Member

USA
5085 Posts

Posted - Mar 13 2011 :  15:52:00  Show Profile Send Shastaboat a Private Message  Reply with Quote
Paul B. I appreciate the feedback. I always say the "proof is in the pudding." I've been loading for 44 years and have never had an accident. I have popped a few primers loose when doing some load develpment. When I do settle on a load I am satisfied that I'm safe. I also have a 93 Mauser rebarreled to 7.62 Nato. I shoot 150 gr SP with 47 gr of H335 at 2850 fps chronoed. I really do like working with the small ring older Mausers. They used to be very inexpensive but anymore I can buy a new off the shelf rifle for about 2/3 of what it costs me to build a Mauser up to modern specs. I'm only 62 and really like the mid size calibers. The 6.5 Swede, 7x57, 257 Roberts...they seem to do the trick for me.
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zrykhus
New Member

28 Posts

Posted - Mar 19 2011 :  19:15:39  Show Profile Send zrykhus a Private Message  Reply with Quote
I lied. lol I need info for winchester 760 powder and a Barnes TSX 140 gr bullet ( in the 7x57 mauser). I shot 44 and 44.5 grains of win 760 today and did not work as well as I had hoped. Any info would be great
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Shastaboat
Advanced Member

USA
5085 Posts

Posted - Mar 20 2011 :  10:14:49  Show Profile Send Shastaboat a Private Message  Reply with Quote
Since my Winchester Ball Powder Loading Data guide book lists a load 04 46.5 gr. of 760 powder for 150 gr bullet in 7x57 I would start there and work up with 1 gr increments. I find this Guide to be very conservative in pressure recommendations. I see Paul B has worked with this powder and is a better source than I.

Edited by - Shastaboat on Mar 20 2011 10:18:22
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Paul B
Advanced Member

3268 Posts

Posted - Mar 21 2011 :  16:54:41  Show Profile Send Paul B a Private Message  Reply with Quote
Data for W760 from the Barnes loading manual #4 for the 7x57 Mauser.

120 TSX BT:

start: 46.5 gr. 2777 FPS Max: 49.0 gr. 2945 FPS Load density 90 percent.

140 gr. TSX BT and MRX BT:

Start: 43.5 gr. 2560 FPS Max: 46.5 gr. 2708 FPS Load density 90 percent.

Paul B.
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Chowdawg
Starting Member

USA
8 Posts

Posted - Sep 22 2011 :  16:07:54  Show Profile Send Chowdawg a Private Message  Reply with Quote
I have a custom 7.57 Mauser 98 with a custom hand rolled Dublin bench barrel and a Timney trigger. At 100yds, all three shots connect with most hand loads. Even with store bought rounds she is dead on, if I do my part...
When Barnes first came out with the TSX, I figured why not. I loaded a few TSX 139gr with different powder loads. The first bullet hit the paper at 100yds and keyholed (the bullet hit sideways). I tried one of the other loads with it hit the same. I stopped then out of fear of damaging my rifle.
I contacted Barnes and they told me that the twist ratio's with a 7.57 Mauser barrel is not comparable with the TSX. Other words the TSX is not comparable to my barrels twist rate...
I use TSX in my 30-06, .243, .270 and they all perform fine.

ChowDawg
USAF Retired Diamond

Edited by - Chowdawg on Sep 22 2011 16:27:39
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Shastaboat
Advanced Member

USA
5085 Posts

Posted - Sep 23 2011 :  16:07:23  Show Profile Send Shastaboat a Private Message  Reply with Quote
Interesting, I've heard about unreliable expansion in the TSX and other solid bullets. Glad I don't hunt S. Californica where I'd have to switch from conventional lead core bullets.
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spires5d
Average Member



145 Posts

Posted - Sep 23 2011 :  22:47:38  Show Profile Send spires5d a Private Message  Reply with Quote
Well,I've got an old 7x57 Mauser war rifle made in Germany and I'm loading 140 gr. CT Silvertips with 47 gr. IMR 4831 powder to Deer hunt with this year.My old gun likes shooting 130 and 140 grain bullets.Even though I've loaded up some TSX bullets for my 7Mag,I'm not going to try them in my Mauser.From what I had read,is that the twist isn't right for these bullets in a Mauser.Have a good day.




7mm's FOREVER and a 30 cal. will "Slam Dunk Um"
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Shastaboat
Advanced Member

USA
5085 Posts

Posted - Sep 23 2011 :  23:35:41  Show Profile Send Shastaboat a Private Message  Reply with Quote
quote:
Originally posted by spires5d

Well,I've got an old 7x57 Mauser war rifle made in Germany and I'm loading 140 gr. CT Silvertips with 47 gr. IMR 4831 powder to Deer hunt with this year.My old gun likes shooting 130 and 140 grain bullets.Even though I've loaded up some TSX bullets for my 7Mag,I'm not going to try them in my Mauser.From what I had read,is that the twist isn't right for these bullets in a Mauser.Have a good day.

Is your Mauser a 98 or 95? (cock on opening or closing?) Your load is pretty mild. We've taken 139/140 grain bullets to 53.5 gr of H4831 short cut. Crono's in a 22" barrel at 2790 fps. Your load is two grains lower than starting loads in Lyman 45th Edition. Not knowing what your barrel length is you will be getting about 2200 fps in a 22" barrel and about 2450 fps in 30" barrel. I like the 130 gr. and my son likes the 140 gr.


7mm's FOREVER and a 30 cal. will "Slam Dunk Um"

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Paul B
Advanced Member

3268 Posts

Posted - Sep 25 2011 :  16:45:57  Show Profile Send Paul B a Private Message  Reply with Quote
quote:
Originally posted by Chowdawg

I have a custom 7.57 Mauser 98 with a custom hand rolled Dublin bench barrel and a Timney trigger. At 100yds, all three shots connect with most hand loads. Even with store bought rounds she is dead on, if I do my part...
When Barnes first came out with the TSX, I figured why not. I loaded a few TSX 139gr with different powder loads. The first bullet hit the paper at 100yds and keyholed (the bullet hit sideways). I tried one of the other loads with it hit the same. I stopped then out of fear of damaging my rifle.
I contacted Barnes and they told me that the twist ratio's with a 7.57 Mauser barrel is not comparable with the TSX. Other words the TSX is not comparable to my barrels twist rate...
I use TSX in my 30-06, .243, .270 and they all perform fine.



I find that very interesting. Have you checked to see what the twist rate is in your rifle? My custom Mauser is 1 in 9" and if I measured the Winchester M70 Featherweight correctly, its about 1 in 8". Dunno what the twist is in my Ruger #1A in 7x57 but I'm guessing probably 1 in 9 although IIRC, the Ruger M77 I had about 20 years ago was 1 in 10".
I guess what all this is leading up to is what are you gonna do with those left over TSX bullets? I'm getting ready to start load work up for my two rifles with the 120 and 140 gr. TSX and can always use a few more if you want to sell them off. I figure that if they don't work in the 7x57, there's a .280 Rem. and 7MM Rem. mag. sitting on the sidelines. They gotta work in one of them. I'm thinking the 120 gr. bullets should not be a problem but am hoping the 140's will work as I'd like to take that custom out on an elk hunt, if the bullets shoot straight.
Frankly, I'm surprised as hell that Barnes would say the twist in a 7x57 is not adequate for that 140 gr. bullet. A 1 in 8", 1 in 9" either one should do the job unless your custom barrel has a 1 in 10" or possibly even slower twist. Still, if the bullet is going fast enought, it should stabilze. I don't know how fast you were pushing them which also might be a clue.
Even though those bullets are keyholing for you, they're going perfectly straight inside the barrel. The won't start to tumble until they exit the muzzle. Won't hurt you gun a bit, only your ego as worst.
Paul B.
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