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Shooting & Reloading - Mausers, Big Bores and others >> Cast Bullets

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Perry
.275 member


Reged: 09/11/10
Posts: 73
Loc: Qld Australia
A little more Load deveelopment for my 35.303
      #183096 - 05/06/11 07:10 PM

I went to the Range on Friday to try a couple of loads I put together for my 35.303

I used a Lyman 358315 mould that a very generous Gentleman Loaned me and straight Wheel weight Lead which I quenched in a bucket of cool water then allowed to sit for a month or so. They should have been somewhere around 18 BHN. They weigh 208 grains and are a Gas check projectile that I sized using a Lee .358 sizing die. The Gas check was fitted when I sized the projectiles and then I pan lubed them

I am a DIY type and I had the followed ingredients on hand so mixed 2 different Bullet Lubes, the first was a Bee's Wax, Parrafin, Carnuba Wax and Auto Transmission Fluid mix. The 2nd Lube was Lee Alox, Parrafin and STP Oil treatment. Both where quite stiff mixes and not tacky

I was unsure of the suitability of either bullet lube for my needs so I thought it best too try both with the same powder charge to see if one was any better than the other or if both where no good.

I used 3 times fired cases that I have only neck sized. The projectile was lightly crimped in place but the Neck Tension was such that this was probably unnecessary. I got the impression that by chance the tapered expander in my Die set is just the right diameter to open the case neck so the Cast projectiles seat firmly but not a tight enough to size the projectile down a little more

Up until this point I had used 44 grains of AR2208 under a 225 gr Sierra Gameking, it's a mild and accurate load. I have no interest in pushing this SMLE any harder but I'm sure it will handle a stiffer load.

The load used was 38 grains of AR2208 [ Varget ], 208 grain gc Cast bullet. I knew it would be a light load but I was being cautious as I figured it will still be doing 1900 + fps and I was leary of Leading the barrel if the Lube was no good. AR2208 [ Varget ] fills the case well, around 70% so I was not worried about it falling away from the primer.

Here's 2 10 shot groups, Left the Alox lube , Right the ATF lube, not much in them but I like the shape of the Alox group better. They where fired at 50 metres off a Bipod and unsupported Stock, so no great shakes, still MOA Pig or Goat though



As expected the 38 gr load was light, the case necks did not expand and seal well as the case's had a bit of soot around the Neck. I am happy with the potential this Rifle is showing with this off the Shelf Cast Bullet Mould. Ideally I would like to shoot 250 gr Cast Bullet at around 2000 fps. I have cast several hundred of 358315's to keep me going in the mean while. They feed OK from the magazine but I'd be happier with a longer projectile.

Cast Bullet Engineering http://www.castbulletengineering.com/page0041.html list a Mould that looks just about ideal for my needs - just gotta save a little more. In the mean while the 358315 mould seems well worthwhile and I can see I'll buy my own soon enough. I am also thinking about getting myself a .359 Sizing die in a direct comparision with the .358 sized projectiles

Next range session will have loads starting from 39 gr of AR2208 [ Varget ] going up in 1 grain increments with the Alox STP, Parrifin lube. I'll fine tune after the next session.

regards Jacko

--------------------
"To my deep mortification my father once said to me, 'You care for nothing but shooting, dogs and rat catching, and you will be a disgrace to yourself and all your family.' " -Charles Darwin

Edited by CptCurl (29/06/11 09:01 AM)


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450_Ackley
.375 member


Reged: 06/02/03
Posts: 583
Loc: Darling Downs, Qld Australia
Re: A little more Load deveelopment for my 35.303 [Re: Perry]
      #183098 - 05/06/11 08:35 PM

Perry,
You've got to be happy with that, those loads are looking pretty good, I think if you "get under them" a little more, the vetical dispersion will probably get a bit better, and round out your groups as well.
I've got a CBE mould that casts a 250 grain, fairly flat nosed bullet with a bit of a round nose look as well.
If that's the mould you are looking at, let me know and I'll rattle a few out and post them down to you to try first, before you shell out for a mould, also got a 200 grain RCBS and a 250 grain RCBS from the special order catalogue if they are of any interest.

Regards,
David.


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DarylSModerator
.700 member


Reged: 10/08/05
Posts: 26524
Loc: Beautiful British Columbia, Ca...
Re: A little more Load deveelopment for my 35.303 [Re: 450_Ackley]
      #183103 - 06/06/11 12:36 AM

One thing I noticed, Jacko - is that you may not have sized and lubed the bullets immediately after casting them. Doing so will not anneal the bullets. While quenching the bullets will harden them in relationship to the temperature they were when quenched, cold working the bullet, ie: sizing, will soften or anneal the bullets if not done immediately after casting. If they sat for any length of time over 12 hours, it is likely the contacting surfaces in the size die were softened back to original hardness of the alloy.

I like a rifle's cast bullets to be .002" larger than the groove diameter.

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


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


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Perry
.275 member


Reged: 09/11/10
Posts: 73
Loc: Qld Australia
Re: A little more Load deveelopment for my 35.303 [Re: DarylS]
      #183118 - 06/06/11 11:00 AM

Morning fella's

Thanks for the offer David, PM sent

As for the stringing, the trigger is likely the biggest problem. While pretty good by SMLE standards, it could do with a little work.

Daryl I was not aware of the point you made re sizing so soon after Casting. The projectiles had sat for a month or so before I sized them. The projectiles seem to be shooting well enough but I will take your advice next time I cast some up. I had planned on ordering a .359 sizing die shortly.

--------------------
"To my deep mortification my father once said to me, 'You care for nothing but shooting, dogs and rat catching, and you will be a disgrace to yourself and all your family.' " -Charles Darwin


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DarylSModerator
.700 member


Reged: 10/08/05
Posts: 26524
Loc: Beautiful British Columbia, Ca...
Re: A little more Load deveelopment for my 35.303 [Re: Perry]
      #183161 - 07/06/11 01:37 AM

I've had good accuracy with WW alloys to about 1,800fps without leading, using normal alox/BW lubes. Lyman's moly lube and LBT's Blue will allow somewhat higher speeds with the softer alloys.

Much depends on the peak pressure of the load and time to peak pressure as well as how much over the 'ductile' barrier pressure one is shooting can determine how accurate they shoot and how much leading, if any, will ocurr.

Of course, the harder the bullet, the higher speed it can be driven. I've driven 275gr. FN's from a H&H at 2,700fps with MOA accuracy and no leading, using LBT Blue - so much is possible & there's lots of room for experimentation.

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


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


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