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AzGuy
.333 member


Reged: 23/03/06
Posts: 388
Loc: Prescott, Arizona, USA
9.3x74 Velocity
      #79483 - 27/05/07 01:01 PM

What sort of velocity (factory and/or handloads) are you guys getting with the short barreled Chapuis and Merkel's?

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450
.300 member


Reged: 30/12/06
Posts: 199
Loc: Melbourne,Victoria, Australia
Re: 9.3x74 Velocity [Re: AzGuy]
      #79506 - 28/05/07 12:14 PM

Arizona

Out of my Baikal with 24" barrels I am getting the 250 grain BT and 270 grain speers doing 2300 feet per second. Tip the gun up and the empty cases just fall out of the chamber. I am yet to Chrono the 286grain loads. Will post results in the next week or so.

Wayne

--------------------
The worst days shooting and hunting is better than the best day at work

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farshot
.300 member


Reged: 25/01/06
Posts: 106
Loc: Alberta Canada
Re: 9.3x74 Velocity [Re: 450]
      #79535 - 29/05/07 03:14 AM

Out of my Brno o/u with 24 inch bbls I get:

Factory Norma 286 gr 2380 ft/s

286 Nosler with RL15 2360 (better is the 2330 area)

270 Speer with RL 15 2440 (better is the 2400 area)

250 Nosler BT with RL 15 2550

No pressure signs -- I have ejectors , so I dont know about the "falling out" - but the shells appear very normal and I mic the base and it shows no untoward expansion.

My rifle appears to like the 250 gr speed for upper and lower bbl combined grouping (about 2 inch at 100 yds) but each bbl loves (each bbl 3 holes touching) the 286 gr at 2250-2350 (but they separate about 4 inch vertical at 100yds)

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AzGuy
.333 member


Reged: 23/03/06
Posts: 388
Loc: Prescott, Arizona, USA
Re: 9.3x74 Velocity [Re: AzGuy]
      #79591 - 30/05/07 08:59 AM

With all the 9.3x74 fans on this forum....there has got to be more actual field/chrony results.

Are you/ Can you get "factory ballistics" out of the shorter barrels?? And still regulate?

Thanks for sharing your experience.

Edited by Arizona (30/05/07 09:23 AM)

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DUGABOY1
.400 member


Reged: 02/02/03
Posts: 1340
Loc: TEXAS USA
Re: 9.3x74 Velocity [Re: farshot]
      #79626 - 31/05/07 03:19 AM

Quote:

Out of my Brno o/u with 24 inch bbls I get:

Factory Norma 286 gr 2380 ft/s

286 Nosler with RL15 2360 (better is the 2330 area)

270 Speer with RL 15 2440 (better is the 2400 area)

250 Nosler BT with RL 15 2550

No pressure signs -- I have ejectors , so I dont know about the "falling out" - but the shells appear very normal and I mic the base and it shows no untoward expansion.

My rifle appears to like the 250 gr speed for upper and lower bbl combined grouping (about 2 inch at 100 yds) but each bbl loves (each bbl 3 holes touching) the 286 gr at 2250-2350 (but they separate about 4 inch vertical at 100yds)



FARSHOT, The 286 gr load @ 2250-2350 FPS, shooting 4" apart at 100 yds? Which is the way they seperate top barrel shooting on top, or top barrel shooting on the bottom?

If each barrel is shooting groups of three all touching, but the barrels shooting 4" apart with the bottom barrel shooting on top, and the top barrel shooting on the bottom, the rifle is crossing. The cure for is to slow the load down some, till the bottom barrel shoots closely under the top barrel. Your barrel time is too short.

If however, the top barrel is shooting on top, and the bottom barrel is shooting on the bottom, and the groups are 4" apart, the load is too slow, and needs speeding up, till they shoot top on top, bottom on bottom, but close enough to make a good composite group @ 100yds.

Don't worry about getting the advertized velocities, in your barrels, anything between 2150-2350 fps will do the trick, as long as your loads shoot to the regulation of your rifle!

--------------------
..........Mac >>>===(x)===>
DUGABOY1, and MacD37 founding member of DRSS www.doublerifleshooterssociety.com
"If I die today, I have had a life well spent, for I've been to see the Elephant, and smelled the smoke of Africa!"

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John
.300 member


Reged: 23/01/07
Posts: 114
Loc: Manitoba, Canada
Re: 9.3x74 Velocity [Re: DUGABOY1]
      #79722 - 01/06/07 11:00 AM

9.3 x 74R Velocities

Following are a few notes from my range book. Rifle used is a Franz Sodia, Ferlach O/U she was built in 1959 and I have the original factory test target showing 286 TUG bullets.

With Norma Alaska each barrel will put 2 rds in under an inch at 100m, but 4 inches apart, barrels are crossing. (Originally I thought they were not crossing but I had made an error writing up my range notes) Bullet weight has not changed this. The last load with Woodleigh 286 gr is now two inches apart vertical but my velocity is now just under 2000 fps. I have a dilemma, as I want to use the 286 Gr WoodLeigh for plains game and would like a min of 2200 fps. Although I have a Merkel B3 ordered for Africa I see all of this as relevant research.

I also have an Antonio Zoli that appears to shoot all weights into 2 inches at 100m despite a loose rib!

Ferlach O/U

Norma Alaska 286 Gr 2400 fps
Norma Vulka 235 Gr 2576 fps
RWS 293 Gr 2197 fps

IMR 4064 56 Gr 270Gr Speer 2426 fps
IMR 4350 64 Gr 270 Gr Speer 2276 fps
IMR 4831 62 Gr 286 Gr Norma Alaska bullet 2278 fps


IMR 4831 60 Gr 286 Gr WoodLeigh 1959 fps.

What I can say is that the 9.3 x 74R is an absolute delight to shoot, I am only 165 lbs and don’t particularly like heavy recoil, but I fine her real “pussy cat”. I highly recommend this cartridge.

John

Edited by John (01/06/07 11:50 AM)

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farshot
.300 member


Reged: 25/01/06
Posts: 106
Loc: Alberta Canada
Re: 9.3x74 Velocity [Re: John]
      #79751 - 02/06/07 04:33 AM

The bottom bbl is stiking the target 4 inch low and top is grouping basically on target. So i konw they are not crossing. The groups are just so tight in the whole range of powders even though they separate from 4-6 inches, I tend to want to leave it as it is repeatable. At close range the 56 gr of powder load gives about 1 inch groups from both bbls at 25 yd -- so that will be my deciding factor.

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farshot
.300 member


Reged: 25/01/06
Posts: 106
Loc: Alberta Canada
Re: 9.3x74 Velocity [Re: farshot]
      #79753 - 02/06/07 04:36 AM

BTW - I tend to not want to incrase the velocity any more with the 286 (my prefered choice) due to pressure limits -- i can get the bbls to mjeet with 250 gr noslers at 2560 or so .

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DUGABOY1
.400 member


Reged: 02/02/03
Posts: 1340
Loc: TEXAS USA
Re: 9.3x74 Velocity [Re: farshot]
      #80014 - 06/06/07 10:56 AM

Quote:

BTW - I tend to not want to incrase the velocity any more with the 286 (my prefered choice) due to pressure limits -- i can get the bbls to mjeet with 250 gr noslers at 2560 or so .



IMO, the reason for this is the rifle was regulated with a lighter bullet than the 286 gr bullet. I would either use the lighter bullet, or have the rifle re-regulated, for the 286 Gr load!

--------------------
..........Mac >>>===(x)===>
DUGABOY1, and MacD37 founding member of DRSS www.doublerifleshooterssociety.com
"If I die today, I have had a life well spent, for I've been to see the Elephant, and smelled the smoke of Africa!"

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