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Shooting & Reloading - Mausers, Big Bores and others >> Mauser Discussion Forum
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Metalguy
.300 member


Reged: 25/10/09
Posts: 152
Loc: Northern WY
HVA 146
      #257459 - 03/12/14 01:42 AM

I was lucky enough to locate an untouched HVA 146 earlier this year. By untouched I mean it has not been drilled and tapped anywhere. I am curious however if anyone knows of a "direct" replacement for the rear sight? I would like an adjustable type similar to NEGC. Thanks in advance.

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DarylS
.700 member


Reged: 10/08/05
Posts: 26994
Loc: Beautiful British Columbia, Ca...
Re: HVA 146 [Re: Metalguy]
      #257460 - 03/12/14 03:48 AM

Sry- rear sight worked just fine for me. I filed it out to a shallow V and ended up with a zero at 200yards with 270gr. Speer at 2,300fps - 9.3x57.

--------------------
Daryl


"a gun without hammers is like a Spaniel without ears" King George V

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Metalguy
.300 member


Reged: 25/10/09
Posts: 152
Loc: Northern WY
Re: HVA 146 [Re: DarylS]
      #257473 - 03/12/14 09:21 AM

I might try doing that, was just curious if I had any options. Also, what powder do you recommend? I believe I am using 49 grains of W748 with the same bullet and am not getting that velocity. Load data is a bit tough to come by I'm finding out. I started at 46 and worked up to the 49 grains, but I think I'm around 2,150 or so but would need to check that to be sure.

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Iowa_303s
.400 member


Reged: 22/03/13
Posts: 1016
Loc: Iowa, USA
Re: HVA 146 [Re: Metalguy]
      #257475 - 03/12/14 10:54 AM

Metalguy,
My m46 is also untouched and like Daryl, I too opened up the notch in the rear sight. My current load is the Speer 270 grain bullet propelled with 48.0 grains of RL15. Velocity is unknown at this time because my chronograph decided to go on the fritz after almost 30 years of use.
My load with the original sights (modified as described) is zeroed at 200 yards. At 100 yards it hits 2 3/4" high.
The same load with the Privi 285 grain bullet is dead on at 180 yards and only an inch low at 200.

--------------------
Matt

formerly known as Iowa_303

"Once your reputation is ruined you can live your life quite freely."

"Enkelkinder über alles"

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Metalguy
.300 member


Reged: 25/10/09
Posts: 152
Loc: Northern WY
Re: HVA 146 [Re: Iowa_303s]
      #257477 - 03/12/14 03:12 PM

RL15 is on my list to buy. I'll give it a whack, thanks for the help.

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DarylS
.700 member


Reged: 10/08/05
Posts: 26994
Loc: Beautiful British Columbia, Ca...
Re: HVA 146 [Re: Metalguy]
      #257490 - 04/12/14 03:23 AM

These loads were worked up in MY rifle chamber, using MY powder measure, at MY seating depth.

Note that none of these loads showed one little bit of pressure, but I repeat, they were fired in MY rifle as noted below. The very most expansion I got at the expansion ring, was with the 232gr. Vulcan bullets with 50 and 52gr. of H5895. That expansion was .0002" - 2-10,000's of an inch and in one spot only on the circumference.
The 300gr. RV resized to .367" Hornady .375 bullet gave .0001" to .0002" expansion. The rest gave 0 expansion from FL sized.

232gr. Norma Vulcan - 48.5gr. H335 - 2,900" OAl - 2,317fps
232gr. Norma Vulcan - 50.0gr. H335 - 2,990" OAL - 2,362fps
232gr. Norma Vulcan - 54.0gr. BLC2 - 2,990" OAL - 2,336fps
232gr. Norma Vulcan - 50.0gr. H4895- 2,865" OAL - 2,442fps
232gr. Norma Vulcan - 52.0gr. H4895- 2,990" OAL - 2,436fps
note change in seating depth and drop in velocity due to drop in pressure
220gr.FN resized Hornady52.0gr. H4895- 2.990" OAL - 2,547fps
225gr.SP resized Hornady52.0gr. H4895- 2,990" OAL - 2,558fps
225gr.SP resized Hornady56.0gr. BLC2 - 2.990" OAL - 2,550fps
270gr. Speer - 48.0gr. H4895 - 3.045" OAL - 2,268fps
270gr. Speer - 52.0gr. BLC2 -- 3,045" OAL - 2,300fps
270gr. Speer - 53.0gr. BLC2 -- 3.045" OAL - 2,320fps- used on moose
300gr. RN resized Hornady45.0gr. H4895 3.070" OAL - 2,175fps
293gr. RWS TUG 3,1" OAL dropped pressure from the above 300gr. load and produced only 2,100fps. - made cloverleafs at 100 meters from my 1929 M46 Husky.

On the left is a factory 8x57 RP case. Beside it is an 8x57 RP case necked up to take a .366" bullet. In the middle is an 8x57Rp case necked straight in one pass over an expander button. Beside that is an 8x57RP case necked to be a crush fit in my chamber. Note the shorter neck on the far right case compared to the case second from the left- that is a visual representation of .019" thousandths of in inch. It is readily visible. IF the case second from the left was loaded and fired, it would either spit the primer 1/2 way out, or the case would stretch at the expansion ring and separate on the first second or third firing.

I used 8x57 RP brass and WLR primers.
I necked the brass straight then sized them to be a crush fit in my chamber which has .019" headspace on simple necked up to .366" brass.



--------------------
Daryl


"a gun without hammers is like a Spaniel without ears" King George V

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Metalguy
.300 member


Reged: 25/10/09
Posts: 152
Loc: Northern WY
Re: HVA 146 [Re: DarylS]
      #257514 - 05/12/14 02:45 AM

Thanks guys! I will try these loads by WORKING UP to them. Cheers!

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DarylS
.700 member


Reged: 10/08/05
Posts: 26994
Loc: Beautiful British Columbia, Ca...
Re: HVA 146 [Re: Metalguy]
      #257515 - 05/12/14 03:14 AM

Seems to me, the 146 is a M98 action.
If in good shape and they usually are, you can probably duplicate the 1925 9.3x62 performance, that is, you should be able to make just over 2,300fps with a 286gr. when all is said and done.
Norma loaded/loads the 9.3x57 to 34,000cip- copper crusher measurement.
Why they do this, is uncertain as the M46's are chambered for the 8x57, 9.3x62 and 6.5x55 as well. The first two run 57,000psi and the 6.5 is standard at 55,000psi.
We all know the M98's will handle even more if YOU want - it all depends on what that is and what shoots best.

--------------------
Daryl


"a gun without hammers is like a Spaniel without ears" King George V

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