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500 Jeffery rapid fire practice

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17 March 2008, 01:14
JefferyDenmark
500 Jeffery rapid fire practice
Gentlemen

I got one of those camcorders Big Grin



Cheers,

André


Always always use enough... GUN & KNIFE

17 March 2008, 02:07
Michael Robinson
Nicely done, André! Can you give us an English translation of what your camera man said at the end? Also, what loads were you using?


Mike

Wilderness is my cathedral, and hunting is my prayer.
17 March 2008, 02:16
JefferyDenmark
The loads are 535 grn Woodleigh SN at 2400 fps.
(118 grn og N140 federal, 215 primers, Horneber brass)

The camera man coments on the extreeme extraction of the cases, my rifle extracts the cases about 6 feet.

I am uploading more videos, but is takes time.

Cheers,

André


Always always use enough... GUN & KNIFE

17 March 2008, 02:17
ALF
/
17 March 2008, 02:25
JefferyDenmark
The balance of my heym is quite nice, and the weight is 5.6 kg.
Please note that I lean into the recoil, that alows for a faster rapid fire.

Cheers,

André


Always always use enough... GUN & KNIFE

17 March 2008, 02:26
FAST996
Hello Andre,

Very nice! Can you tell us about the rifle,action,weight and so forth.

Roger

Looks like are messages crossed. The rifle weighs about 12 and a third pounds is that right.


"A long life, and the good sense to live it." ...Quintis Arrius

375H&H,404J,416DAK,458AFR,416RIG,450RIG,505GIB

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17 March 2008, 02:30
JefferyDenmark
The rifle is a Heym Express with a magnum Mauser style action.

Cheers,

André




Always always use enough... GUN & KNIFE

17 March 2008, 03:49
ALF
/
17 March 2008, 04:45
JefferyDenmark
Alf
You got that right.
My gun is quite heavy and a strap is needed if you plan to walk all day with it.
I do not think I would like a light .500, maybe with a break, but I am to classic to go for that option Big Grin

Here is another video clip with some rapid fore training.

Cheers,

André




Always always use enough... GUN & KNIFE

17 March 2008, 04:58
Teat Hound
Looks like fun!

beer


-eric

" . . . a gun is better worn and with bloom off---So is a saddle---People too by God." -EH
17 March 2008, 05:09
Bill Cooley
Good shooting! Heym does build a great rifle, 12 and a third pounds is a little heavy to carry all day but you need it if you are going to get a second aimed shot off in any reasonable time.
Bill


Member DSC,DRSS,NRA,TSRA
A man who carries a cat by the tail learns something he can learn in no other way.
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~Will Rogers~
17 March 2008, 21:34
Gerhard.Delport
Good shooting,

Cant wait to get my 500 Jeff shooting around the end of the year.


Gerhard
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17 March 2008, 21:47
yukon delta
Nicely done. Thanks for posting.

What are your plans for this gun?


_______________________________

18 March 2008, 01:30
JefferyDenmark
Plans?
I hunted with the rifle in Argentina with Juan Pozzi, shot some nice boars, hogs and other game.
I did however not hunt with thye rifle in Afrika Frowner
I will go to Tanzania in August for DG but shot with a friends .470 NE.

Cheers,

André






Always always use enough... GUN & KNIFE

18 March 2008, 01:31
Charles_Helm
Nice work with the rifle! Cool


-------------------------------

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18 March 2008, 01:51
yukon delta
Are you going to take the Jeffery for backup in TZ? Put some GS custom HV's in that Jeffery and use it on plains game!


_______________________________

18 March 2008, 02:08
JefferyDenmark
I will not be able to bring guns to TZ Frowner
My friend is recident there and we will hunt with his guns.

Cheers,

André


Always always use enough... GUN & KNIFE

18 March 2008, 03:02
JefferyDenmark
Here is a clip with a 10,75x68 Mauser from 1909.
It is the first time I shoot this rifle, the iron sights is old style and finding the target after shooting is a bit slower then with the Heym.


Cheers,

André




Always always use enough... GUN & KNIFE

18 March 2008, 03:03
shootaway
beer
18 March 2008, 03:56
Canuck
Excellent clips Andre! Thanks for sharing.

Not sure if you ever saw all the clips from our Big Bore Shoot in Canada last spring?

Here is one of me with my 470 Mbogo, doing three shots only (can only get two in the mag)...





18 March 2008, 07:46
retreever
Andre,

Great shooting and I am excited that you will go and taste some DG game in Tanzania...You are going to get bit by that African bug real bad...

Mike


Michael Podwika... DRSS bigbores and hunting www.pvt.co.za " MAKE THE SHOT " 450#2 Famars
18 March 2008, 08:00
RIP
Jolly good show, Andre'. clap

Alf,
If your 500 Jeffery weighs less than 9 pounds, then your "side kick" is to be forgiven for his poor form for the first shot only. Surely he got a better grip on it for the second shot. Wink
18 March 2008, 08:02
SAFARIKID
Great job! You make it look EZ...I need to make a video with my next 500 Jeff which should be about 6.5pds,just like my last one! Smiler


"That's not a knife..THIS is a KNIFE" !
18 March 2008, 12:59
JefferyDenmark
Thanks
You are the only one I know that makes the 4 bore look easy Big Grin.

Chriss you make the 470 Mbogo lok like 30.06, geat shooting Cool

Dang a 6.5 lbs .500 Jeffery quite a pain stick, why so light? You look like you are able to carry what you want?
All that talk about carrying a rifle all day heavy or not!!!! What about a backpack with 35-45 kg on a 50K ma
rch with water and a rifle and side arm!!!!!!!!!
When I hunted in RSA I hauled around a TRG-42, 6.5 kg it did not feel heavy, a bit looong but not heavy.

This is what the target looked like after some hours of shooting.

Cheers,

André




Always always use enough... GUN & KNIFE

18 March 2008, 13:05
JefferyDenmark
quote:
Originally posted by retreever:
Andre,

Great shooting and I am excited that you will go and taste some DG game in Tanzania...You are going to get bit by that African bug real bad...

Mike


Mike
That bug is already in the system, however only the mild planes game bug, I am sure the DG bug is much worse Big Grin can't wait to catch it Big Grin

Cheers,

André








Always always use enough... GUN & KNIFE

18 March 2008, 17:14
Bent Fossdal
Andre,
Nice shooting!!
But why are you not wearing muffs on your ears??
Plugs are not enough to keep that piiiiiiiiiiiiiiiiiiiiiiiiiiip away at night!


Bent Fossdal
Reiso
5685 Uggdal
Norway

18 March 2008, 18:30
JefferyDenmark
I am wearing aquafit earplugs, they work great IMHO.

Cheers,

André


Always always use enough... GUN & KNIFE

19 March 2008, 04:26
caorach
Hi Andre,

Be careful of the hearing as you can't fix it once it is broke. I don't know what sort of attenuation you are getting with the plugs but even the very best plugs aren't enough. Get yourself a good pair of muffs as well. Peltor's top line can be bought for not a lot of cash (at least if you go to a hardware supplier rather than a shooting outlet) and will give you another 30dB+ of attenuation. You will be glad of it in 10 years time, honest.
19 March 2008, 04:41
yukon delta
Not sure about the Aquafits but custom fitted electronic plugs are excellent at noise reduction and completely sufficient. Noise reduction is a very complicated science and I'm not sure that adding two products (say 30dB+ each for example) gives you 60dB+ of protection.


_______________________________

19 March 2008, 08:38
wildboar
As far as I am aware, noise propagates inside the skull mainly across the ear canal, but also through the mastoid bone; this is why ear plugs are not sufficient and earmuffs are a much better protection.
19 March 2008, 08:56
yukon delta
Competitive shooters almost exclusively use custom fitted electronic plugs like the ESP's. That's especially true of competitive shotgun shooters who might shoot 50,000 rounds or more per year.

Keep in mind, I'm not talking about the 10 cent foam ear plugs that you throw away. These are upwards of $1000 for custom fitted/molded plugs that you have to go to an audiologist to be fitted for.


_______________________________

19 March 2008, 11:13
jetdrvr
quote:
Originally posted by caorach:
Hi Andre,

Be careful of the hearing as you can't fix it once it is broke. I don't know what sort of attenuation you are getting with the plugs but even the very best plugs aren't enough. Get yourself a good pair of muffs as well. Peltor's top line can be bought for not a lot of cash (at least if you go to a hardware supplier rather than a shooting outlet) and will give you another 30dB+ of attenuation. You will be glad of it in 10 years time, honest.


Very true. I have been shooting all my life and have flown some very loud radial engined airplanes, plus the Hercules which is very loud, and now I wear hearing aids at age 65, and have been for four years. The Peltors are excellent. I use them weekly and highly recommend you obtain some, or their equivalent. If it weren't for them, I couldn't shoot anymore.
19 March 2008, 11:25
Macifej
HuH?.....what's that?? Big Grin
19 March 2008, 20:54
caorach
quote:
Originally posted by yukon delta:
Keep in mind, I'm not talking about the 10 cent foam ear plugs that you throw away. These are upwards of $1000 for custom fitted/molded plugs that you have to go to an audiologist to be fitted for.


In truth those more expensive plugs can offer little, or no, more attenuation than some of the better cheap foam plugs. In fact foam plugs work surprisingly well given their low cost and simplicity and many of the moulded and very expensive plugs offer less attenuation though more comfort and convienence. Generally speaking foam plugs can provide an attenuation of around 30dB, some a bit more some a bit less, up to a maxmum of 33dB.

A 308 produces a sound pressure level at the shooter of between 160 and 170dB(C) and with a muzzle brake that figure is about 10dB higher. The EU accept that for an impulse noise, such as a gun, the absolute maximum level you can be exposed to is 140dB(C). So, plugs on their own are not necessarily enough to take you down below that EU maximum figure, especially with a rifle that may be somewhat louder than the 308. Also the 140dB(C) figure is a maximum and in view of the importance of your hearing and how easily it may be damaged I think most people would accept that more protection is better than less.

When applied in "series" like this the attenuation of plugs and muffs do indeed just simply add up, in truth this was one of the reasons why we measure things in decibels. So, typically your plugs might give 30dB of attenuation and good muffs, such as the Peltors, give about another 30dB attenuation giving you a total reduction in the region of 60dB. Extrapolating from the 308 I am going to make the unsupported assumption that some of the big bores are producing 180dB(C) and based on that muffs and plugs are necessary to get you below the EU max level and they will, in fact, take you to about 120dB(C).

Different people have different priorities in life and some may be willing to accept a little hearing loss however I can't afford any loss and so must take great care. My 308 has a moderator (for the occasional unprotected shot at game) plus I wear plugs and muffs at all times on the range giving me a total attenuation of around 85dB.

I believe, though don't have any primary sources for this so it's worth what you paid for it, that bone conduction is not a serious problem with a rifle and only becomes a serious issue with larger field guns. My experience with plugs/muffs seems to bear this out and I would appear to experience very little bone conduction.

I suspect, Yukon Delta that your thought that you can't just add up the attenuation of plugs and muffs comes from the fact that a halving of the power of sound results in a 3dB reduction in the level measured on a decibel scale. So, if you double your power attenuation you add 3dB to the initial value. However, in this situation we are not doubling the attenuation but adding another 30dB(ish) to the attenuation and that is a slightly different matter. I was having this discussion with a fellow engineer recently and he made exactly this error and it took the two of us a while to work it out so it is a simple and non-obvious error to make.
20 March 2008, 00:16
Michael Robinson
This is a good research article on the subject of the combined attenuation power of plugs and muffs.

Sound Attenuation from Earmuffs and Earplugs in Combination: Maximum Benefits vs. Missed Information

The conclusion, as a general matter, is that wearing both plugs and muffs can add approximately 5dB-20dB of additional attenuation over the greater of that provided by either the plugs or muffs alone, with the degree of additional attenuation depending upon the frequency of the sound. As a practical matter, this means that the maximum attenuation provided by plugs and muffs in combination is somewhere around 38-50dB.

Apparently, however, by carefully fitting the appliances, that range of increase in attenuation can be enhanced. Well-fitted plugs and muffs, when worn in combination, can apparently achieve a maximum attenuation of between 45-60dB, again depending upon the sound frequency.

Bottom line is that both plugs and muffs can be significantly better than either alone, so I generally wear both.

Sorry for the hijack, André. Love the videos.


Mike

Wilderness is my cathedral, and hunting is my prayer.
20 March 2008, 16:16
GarBy
Andre.....I hope my Heym Jeffery shoots like that when it gets here!! Very nice job.

Gary
DRSS
NRA Lifer
SCI
DSC
22 March 2008, 21:12
JefferyDenmark
Gentlemen

Relax Cool My ears are fine.
I normally wear Peltor Tactical when I shoot, and only the aquafit earplugs when I practice rapid fire.

Thanks for all the kind coments.

Cheers,

André


Always always use enough... GUN & KNIFE

20 January 2009, 18:23
lapua
nice vest m8


LLLLWWWWW Smiler
21 January 2009, 21:08
Robgunbuilder
Andre- Great video and good shooting! Can I make a suggestion? Lean in more from the waist up and dont take your head off the stock when stroking the bolt. If you have to ,cant the gun slightly while working the bolt but dont take your head off the stock. It will make a big difference!-Rob


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23 January 2009, 06:40
Buliwyf
Canuck,

What are the specs on your rifle? What is the ballistic performace of a 470 Mbogo?

Thank you.