50 BMG at the range.

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TedH
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50 BMG at the range.

Post by TedH »

I arrived at the range yesterday to find a couple guys there with a new AR50, 50 BMG. He was about to fire as I approached the line so I stopped to put on my hearing protection. I was about 20 feet to the left and a few feet behind when he touched it off. Crikey!! What a blast of pressure from that huge muzzlebreak!

I went about my business, shooting the Marlins in 356 Win, 375, and 218 Bee. All the loads were topped with my cast bullets, all from Ranch Dog molds. After firing this 1.9" 100 yard group and another just like it from the 375, I settled on this load of a healthy charge of RL7 and bullets cast from a Lyman #2 duplicate, water dropped. I was pretty excited about this load, a 230 gr. flat nose thumper moving out at 2200 fps should put the whammy on anything I'm likely to encounter.

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I continue to struggle with the cast bullets in the 356 Win. chambered 336ER. I can have very promising initial groups at 50 yards, but when the same load is shot at 100 yards they seem to fall apart with miserable accuracy. I'm about to throw in the towel and just stick with proven jacketed bullet loads.

After I finished up my shooting, the 50 BMG guys were still there. They asked if I had a good way of disposing of a cartridge that failed to fire. I told them that a lot of times if you hit it again it may well go off. He asked me if I wanted to try it? What a silly question, that's like asking a crackhead if he want's some dope! I put the once-dimpled cartridge in the huge chamber and closed the bolt as I settled in behind the 30 pound rifle. Not knowing if the cartridge would burn it's powder, I really didn't want to look like a buffoon with a giant flinch if it didn't go off. So I convinced myself that it indeed would NOT ignite and started the trigger pull. "Click" Phew! I was steady as a rock, and almost relieved it didn't go off! :lol:

Unfortunately that was the last round they had so my first shot with a 50 BMG will have to wait for another day.
Last edited by TedH on Sun Aug 22, 2010 1:07 pm, edited 1 time in total.
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3leggedturtle
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Re: 50 BMG at the range.

Post by 3leggedturtle »

You a better man than me, seems likeI always flinch on the first shot of any new/different rifle i shoot. except 22's. I also have cast loads that do excellent at 25 and 50 yards then completely fall apart at 100 yards. So am prolly gonna melt them down and cast bvullets that shoot good.
30/30 Winchester: Not accurate enough fer varmints, barely adequate for small deer; BUT In a 10" to 14" barrelled pistol; is good for moose/elk to 200 yards; ground squirrels to 300 metres

250 Savage... its what the 223 wishes it could be...!
Technical Director
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Re: 50 BMG at the range.

Post by Technical Director »

Hi TedH,

Your quest for better 100 yard accuracy reminds me of my experience shooting .32 S&W Long semiwad cutters versus wad cutters. Always got good accuracy with the wad cutters at the closer range, but always got better accuracy with the semiwad cutters at longer range. Maybe the same case for you at the longer distance whereas your bullet nose may perform better with a bit more streamlining.

Also got the chance to send a couple of .50's down range one time. Not the BMG's but the .50 S&W and out of a revolver with a two inch long barrel. Even shooting reduced loads, I still gave the S&W the grip of death when I shot it. The kewl experience was after shooting it, you'd see the surrounding air distort due to the transfer of energy in the form of a lot of heat. A moment later, the resulting heat cloud would envelop you :o .

Hope this helps, Technical Director
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Ysabel Kid
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Re: 50 BMG at the range.

Post by Ysabel Kid »

Ted, I too would like to give the .50 BMG a whirl some day. Then again, I'd also like to give the 356 Win, 375, and 218 Bee a whirl too - never have fired any of those rounds!

How hot was it in your neck of the woods? Hot as blazes here. Shooting just would not have been any fun...
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Old Savage
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Re: 50 BMG at the range.

Post by Old Savage »

Went to the range one day and heard one go off from 400 yds, mind said to me ..... sounds like something military.
In the High Desert of Southern Calif. ..."on the cutting edge of going back in time"...

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20cows
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Re: 50 BMG at the range.

Post by 20cows »

What cast bullets are you trying in the .356? I have a .356 in the building stage and have not settled on a mould yet.
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TedH
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Re: 50 BMG at the range.

Post by TedH »

YK, the weather here has started to break, finally. It was only in the low 90's over the weekend. Supposed to get down to the mid 50's at night this week. 8)

20cows, I've been shooting the Ranch Dog 190 gr. bullets. Since they were designed around the Marlin leverguns, I don't think it's a bullet design problem. I need to try some different alloys and/or more powders. Just frustrated at this point to have a nice cloverleaf group at 50 yards, and minute of pie plate at 100 yards.
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vancelw
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Re: 50 BMG at the range.

Post by vancelw »

Technical Director wrote:Hi TedH,

Also got the chance to send a couple of .50's down range one time. Not the BMG's but the .50 S&W and out of a revolver with a two inch long barrel. Even shooting reduced loads, I still gave the S&W the grip of death when I shot it. The kewl experience was after shooting it, you'd see the surrounding air distort due to the transfer of energy in the form of a lot of heat. A moment later, the resulting heat cloud would envelop you :o .

Hope this helps, Technical Director
I overheard a couple of guys at the gun show yesterday talking about a S&W .500 revolver. The 'Expert' was telling his buddy that the gun was heavy enough that the recoil wouldn't be very much. :lol:
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olyinaz
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Re: 50 BMG at the range.

Post by olyinaz »

That is one fine looking group! And I must say that you did steely man well on that .50 BMG shot. I'd have flinched for sure.

A guestion: Why are you seating the bullet to the second ring? Is that for better accuracy or because you need the case volume? Just curious (I don't load yet but I'm gettin' my mind set on it).

Thanks,
Oly
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TedH
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Re: 50 BMG at the range.

Post by TedH »

Oly, to answer your question, yes and yes. Ranch Dog designed this mold to fill the throat in Marlin chambers when seated to the bottom crimp groove. The other crimp groove is to accomodate other various chambers. The load I settled on is slightly compressed when seated to the bottom groove.
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donw
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Re: 50 BMG at the range.

Post by donw »

is it possible the bullet becomes unstable after 50 yards? maybe a gas check might be in order?
if you think you're influencial, try telling someone else's dog what to do---will rogers
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TedH
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Re: 50 BMG at the range.

Post by TedH »

These 356 bullets are gas checked. I'm casting them fairly hard and heat treating, so I don't think the pressure is too great for them. Especially since I've had several loads that shot very well at 50 yards. It's the same alloy as the 375 bullets in the above pics, and those are being subjected to more pressure than some of the 356 loads I've tried.
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Re: 50 BMG at the range.

Post by Technical Director »

Hey TedH,

You got my curiosity going here too. Do you know at what yardage your load goes subsonic? Quite possible if that transition point is somewhere between 50 and than 100 yards, your realtively flat nose type projectile could be experincing some major turbulance causing your 100 yard groups to go to poop.

Food for thought, Technical Director
Beaker
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Re: 50 BMG at the range.

Post by Beaker »

My local range here has an AR50 that they rent for about $10.00 a round. The recoil is really quite mild from it. But beware of the blast off to each side from the muzzle break, its a real hoot.
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