9.3x57 200 grain Powder coated at 2300 fps

10x

New Member
I finally got brave enough to load up my 9.3x57 with a 200 grain powder coated gas check bullet cast from a 200 grain Accurate mold
Groups were under 2" at 500 meters, 8 bullets shot. Bullet diameter was 0.367"
Powder - WC735 48 grains Velocity an estimated 2300 fps - no signs of pressure.
Now to try the same bullet sized to 0.369" with the same load
Rifle is a Husqvarna L46
 

Ian

Notorious member
If I put eight of eight into 2" at 500 meters I would measure every frog hair on the cartridges and write it on the wall in ink, epoxy the die lock rings in place, have the load data carved on a piece of granite, and send a lead sample off to be analyzed for exact composition so I could duplicate exactly what did that, and never change a thing.
 
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CZ93X62

Official forum enigma
Thank you for catching the type, 50 meters it was and edited to say so.
I got excited at the prospect of "Bench-rest elk rifle".

200 grains checking out at 2300 FPS probably let you know that the primers functioned. In my 9.3 x 62 with castings, the 270 grain cast bullets have a sweet spot at about 1700-1800 FPS, and are gentler on the shoulder in the bargain.
 
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10x

New Member
how was the recoil?

Recoil was ery very gentle. More of a push than sharp smack.
And less than 285 grain Privy Partisan bullets and 285 grain NOE at 2000 fps loaded with IMR 4064
My friend, Guy, who shot the 285 grain load said "this gun is a pussy cat" - he was expecting a lot more recoil. He was the proud owner of an L46 less than 3 weeks later and intends to use it for whitetails in Quebec. His current whitetail rifle is a 450 marlin (Guy is a lawyer in Quebec who comes to Alberta for a week of hunting with me on the Alberta Hunter host Program)

I could not reach the "sweet spot with IMR4064. Groups were over 5" at 100 meters with 42 gr of powder and each increase in powder charge gave a slightly smaller group. At max load of 45 grains the groups are just under 2" with no signs of pressure. for the first time in my life I am tempted to go over max suggested loads by 0.2 grain increments to a) see if groups shrink and b) see if the primer starts to flatten.
I like the caliber, and I like the rifle

Once I get the power coated 2000 grain bullets sorted out with a good load at 2400 fps, i am going to use the same bullet, same diameter with lee liquid alox, and either Felix lube, Lyman lube, or RCBS lube. Just to see if powder coat really did make the a difference.
In the past I have found that with cast bullet accuracy tends to drop off between 1700 and 1850 fps using conventional lube. To date I have only substituted powder coat for lee liqiud alox and the commercial stick lubes and shot the same loads with powder coat.
My initial foray into cast bullets was one based on economy and the desire for inexpensive plinking loads. That worked well when I was shooting my Egyptian Rolling block, my Martini Mk III converted to 45/70, a savage 340 in 30-30,and a K frame 38 special.
Aver my discovery of NOE 5 cavity molds budget and economy went out the window.

BTW, my L46 cost me about $225 Canadian 4 years ago. I paid $185 CDN for my last L46 on a dealer close out on Swede Rifles last December.
I keep finding myself looking at the sweet deals available from the Canadian Importer Tradex
I have found that with the 9.3x57 the first shot was one too many, now 10,000 are not enough.

My always sighted in (with commonly available factory ammo) hunting rifles are a Rem model 7 in 7mm/08 and a Reming 700 ADL stainless in 30/06 - That way I do not need to grab an hour or two of range time confirming zero before I go hunting.

Secondary hunting rifles with cast bullets are 30/06, 30-30, 303, 6.5x55. 7x57, 45/70, and 577/450 depending on my mood and whether or not I have a suitable hunting load that the gun is sighted in for.
Intended rifles to hunt with cast bullets, 9.3x62, 8x57, 6.5 Carcano (Folks were giving away 6.5 Carcano's during the Canadian gun registry program) and 308.

If I can get the 200 grain bullet sorted out this week I will be hunting black bear with it in the first two weeks of May.
 
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fiver

Well-Known Member
IMO your gonna be okay exceeding the load just a bit with the coated bullets.

here's why.
just like when Moly was the new cool thing everyone's speeds and groups fell off and it took a bit of figuring to get them back in line.
what is happening is your getting the slippery bullet into the barrel much easier and with a lower engraving spike, your also zooming it down the barrel with less friction and resistance,
the bullet is moving away from the gas production area at a faster rate so your pressures are lower to begin with and getting lower quicker.
this means you have some leeway in your loads even though you have to stay within the MAP of the round.
I would say you most likely have about 4% more window to work in.
that doesn't sound like a whole lot and it isn't like 5 more grains more, but it does give you like @1.5-2.0 more to work with.
 
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10x

New Member
IMO your gonna be okay exceeding the load just a bit with the coated bullets.

here's why.
just like when Moly was the new cool thing everyone's speeds and groups fell off and it took a bit of figuring to get them back in line.
what is happening is your getting the slippery bullet into the barrel much easier and with a lower engraving spike, your also zooming it down the barrel with less friction and resistance,
the bullet is moving away from the gas production area at a faster rate so your pressures are lower to begin with and getting lower quicker.
this means you have some leeway in your loads even though you have to stay within the MAP of the round.
I would say you most likely have about 4% more window to work in.
that doesn't sound like a whole lot and it isn't like 5 more grains more, but it does give you like @1.5-2.0 more to work with.

That is why the 0.2 grain increments. I had the dubious distinction of shooting a friends gun in 1968, using his loads, and the gun came apart due to pressure. It took years to get rid of the flinch, I never got the tooth that was knocked out by shrapnel fixed, and I still have the scars.
I operate under the smokeless powder principal that the faster the powder burns, the faster it builds pressure, and the faster smokeless powder builds pressure, the faster it burns, sort of an exponential thing. So I do understand that going from 40 to 42 grains (bottom of the ladder load) will not give the same rate of burn and gas expansion that going from 48 to 48.2 grains can give a faster pressure build up.
DId I mention I really like the 9.3x57 and don't want to blow it up
 

Spindrift

Well-Known Member
Interesting thread!
The pressure standard for 9,3x57 has never been updated, and is quite conservative. I wouldn't worry about pushing the envelope a little.
 
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CZ93X62

Official forum enigma
I saw similar indicia back in the days of rifle loads using 50/50 BW/Alox--that at 1700 FPS or so, accuracy started to go a bit south. I started using LSS Carnauba Red in my rifle loads, and that fall-off went away almost immediately. I have run 22 Hornet to 2400 FPS with Lyman #225438 and gotten 1.3"-1.7" ten-shot groups at 100 yards. Powder-coating is likely a step ahead of Greasy Kid Stuff, but I am not going to set up for that process.
 

waco

Springfield, Oregon
Powder-coating is likely a step ahead of Greasy Kid Stuff, but I am not going to set up for that process.
Set up for powder coating? There isn't much to it. Really pretty cheap. A little toaster over is the only real expense. You probably already have everything else you need.
 

10x

New Member
Set up for powder coating? There isn't much to it. Really pretty cheap. A little toaster over is the only real expense. You probably already have everything else you need.

A plastic food tub, $10 worth of powder coat powder and a $3 thrift store toaster oven.
That is how I got my start.
powder coat adds a new dimension to cast bullet shooting, a lot less greasy dimention if I may add...