Help Please...9.3x62 Makes No Sense

[BFaucett]

I read and reread this post thinking my dyslexia was getting to me again, if it has I apologize; the case length for this cartridge is 2.44" not 1.19".

The OP corrected the mistake in post #3.

Bob F.

 

[Rick HOlbert]

I am using QL to help me with my first reloads for my new 9.3X62. QL says using Ram Shot Big Game powder I can have 65 grains and have a 96.2% fill rate producing 2529 FPS. The case length is correct at 1.19 inches. The problem is 65 grains overflows the case!!!!! I want to use the Speer 270 grain Hot Cor for my leopard hunt but with the above am having problems.

Can someone help me please?

Thanks!

Rare Breed, Big Game is a good choice but use caution. I tried it and my rifle didn't like it at all! I was 3.5grn below published max data and was getting pressure signs and sticky bolt lift and extraction. Frankly there is no reason to exceed 2400-2450fps (especially) if you plan on using the 270grn Speer. Good bullet but very soft which has a tendency to come apart at higher velocities.
I use 58.0grn RL-15 which chronographs 2380-2400fps from my 22in. barrel using Swift 286grn A-Frames and North Fork Solids. Slightly above factory velocities but has been taking big game for a very long time.

 

[farmer_john]

This is pretty much exactly what GRT gives. GRT indicates (using default specs) that 65gr is a bit over max pressure - but should give about 97% casefill. Something sounds off if the powder is overflowing the case completely - maybe just double-check/validate your scale in case something is miles off.

You should be on an accuracy node at just above 64gr (64.1gr, using the default settings) at a speed of 2,500ft/s.

Next node down is at 61.4gr at a speed of 2,402 ft/s. I think this is where I'd play, if I were you. If 2,400 ft/s won't get the job done, then 2,500 won't either.

I have 2 scales since mine are onky accurate to .1 grain if they dont both read the same i adjust till they do.

Its possible he didnt calibrate before using

 

[Rare Breed]

What brass are you using?

If my memory serves me is that hornaday and privi have the most volume and RWS and Nosler the least.

Have you checked what you can get for max over all length with the bullet you are planning on using? most 9.3x62 have a fairly long throat.

I would drop to 60gr and work up from there.

Nosler. I’m rechecking my scale since 65 grains according to my hand scale exceeds the capacity of my case when I loaded two of them

 

[Rare Breed]

Rare Breed, Big Game is a good choice but use caution. I tried it and my rifle didn't like it at all! I was 3.5grn below published max data and was getting pressure signs and sticky bolt lift and extraction. Frankly there is no reason to exceed 2400-2450fps (especially) if you plan on using the 270grn Speer. Good bullet but very soft which has a tendency to come apart at higher velocities.
I use 58.0grn RL-15 which chronographs 2380-2400fps from my 22in. barrel using Swift 286grn A-Frames and North Fork Solids. Slightly above factory velocities but has been taking big game for a very long time.

I’m using the Speer bullet for my leopard given softer bullet with rapid expansion.

 

[Rare Breed]

I have 2 scales since mine are onky accurate to .1 grain if they dont both read the same i adjust till they do.

Its possible he didnt calibrate before using

lol!!! I did long ago but did not check…that is the problem…recalibrated and good to go!!! Thanks!!! Some times we take the basics for granted and don’t recheck

 

[BFaucett]

If John Barsness loaded that bullet to 64 grains as above then I would consider that as max and work up to it. Of course, your rifle with your components may not be safe at 64 grains.

Also, case brands and case lots can vary in capacity. You might try a different case if available.

Check JB's asterisk (*) note for the 270 gr Speer load in the image that I posted above:

"An asterisk (*) denotes a "deer load," somewhat reduced in velocity from maximum, ..."​

John B. is noting that his 270 gr Speer load has almost the same point of impact as his 286 gr Nosler Partition load that uses 66.0 grains of Big Game powder.

Cheers! Bob F.

 

[farmer_john]

lol!!! I did long ago but did not check…that is the problem…recalibrated and good to go!!! Thanks!!! Some times we take the basics for granted and don’t recheck

I can only imagine what kind of dangerous catastrophy wod have awaited you if you were doing a 105% compressed load on something supposed to be 93%

Im going to be moving to a autotrickler and a fx120i scale soon. But i always double check if its only accurate to .1 grain on another scale. To try to keep things sorta within tolerances
I also let the scales be on for 10mins to warm up before calibrating

 

[Josh P]

lol!!! I did long ago but did not check…that is the problem…recalibrated and good to go!!! Thanks!!! Some times we take the basics for granted and don’t recheck

I burned out the capacitor on my air handler the other day because I swore I had flipped the breaker…and didn’t use the multimeter 6” from where I was sitting.

 

[andries 318 wr]

I am using QL to help me with my first reloads for my new 9.3X62. QL says using Ram Shot Big Game powder I can have 65 grains and have a 96.2% fill rate producing 2529 FPS. The case length is correct at 1.19 inches. The problem is 65 grains overflows the case!!!!! I want to use the Speer 270 grain Hot Cor for my leopard hunt but with the above am having problems.

Can someone help me please?

Thanks!

My 9,3x62mm works well with Norma 203B

 

[Rafiki]

Love Ramshot Big Game in my 375 H&H; 73.5gr gives me 2530fps with a 300gr Peregrine Bushmaster.

 

[pilar]

Those are mushy beans/ bullets, the Speer manual should serve you well for terminal velocity

 

[Rick HOlbert]

I’m using the Speer bullet for my leopard given softer bullet with rapid expansion.

For a leopard I can see that. Good luck on your hunt.

 

[Bob Nelson 35Whelen]

I am using QL to help me with my first reloads for my new 9.3X62. QL says using Ram Shot Big Game powder I can have 65 grains and have a 96.2% fill rate producing 2529 FPS. The case length is correct at 1.19 inches. The problem is 65 grains overflows the case!!!!! I want to use the Speer 270 grain Hot Cor for my leopard hunt but with the above am having problems.

Can someone help me please?

Thanks!

@Rare Breed
Could just be the brand of case. Some different brands have more ore less internal capacity
Bob

 

[Rare Breed]

Bob just my taking for granted my calibration and forgetting a major move could screw it up and my not checking. Big Game at 62 grains now has the correct 91.6 fill rate producing 2447 FPS at a little over 48,000 PSI when the max is a little over 56,000. Nice!!!!

 

[Cleveland48]

I’ve used John Barnes data for the 9.3x62 for years. My Mauser runs 65 grains of big game with 285 gr bullet at 2510 fps. Also used this load in a sauer rifle I owned too with no issues after hundreds of rounds. Which every gun is different though. Mostly I’ve used PPU brass with this load.

 

[dlmac]

Might try weighing the brass, grouping them by weight. Then check volume with water. A lot of work but would answer some of the potential issues.

 

[Rare Breed]

I am good to go!!! Thanks so much everyone for your help!!!

 

[Atticus]

Just some additional info on my load for the Speer fwiw.

I posted earlier in this thread that I loaded some 270 grain Speer over W748 at 2350fps for a deer hunt. I’m just back and took a nice buck. This was my first animal with the 9.3x62. I was initially surprised not to get a pass through from the behind the shoulder broadside shot--there was no blood trail at all--not that it was needed. I believe it was due to the range I shot him at—50 yards, impact velocity per the calculator would’ve been +- 2230fps and softness of that bullet. It must have gotten significant expansion and just dumped all that energy (+-3000 Ftlb at 50yds) into him. Unfortunately, I neglected to get the bullet for evaluation.

Regardless, it hit him like a freight train—but he stayed on his feet dropping after making it 30 or so yards.

Of course a southern whitetail is not a leopard.

 

[Daryl S]

I would not worry about making it to 2,500fps. It's easy to do with a lot of powders, however the moose calf I shot with one, broke the bullet up on a leg bone and the fragments did not make it all the way through that leg. Mind you it is 2" in diameter high up. No fragments made it into the connective tissue outside the rib cage, let along past the ribs. He dropped at the shot but up and walked maybe 50yards, out of site then lay down. A finishing shot was necessary, through the head. He was 190pounds in quarters. Impact speed would have been only 1,800fps. It is not a moose bullet, especially not a bull moose bullet.