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New here......Help me build a Tack Driver??

 
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Old 11-09-2005, 10:56 PM
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New here......Help me build a Tack Driver??

well after spending the better part of a year shooting my fathers 6mm/284 and stretching every ounce of accuracy out of remington 7mm mag I was able to harvest my first big bull elk at 405 yards with a single shot from a 150 NBT handload. I have caught the bug of long range hunting and looking at building a 1000 yard elk gun. I plan on using McMillian stock, jewell trigger, hart 28 inch barrel #7, either a Nesika bay action or remington 700, and either a loopy or nightforce scope, My father has the 12-42x56 and its a litte more in power and heft than I want for this rifle. Anyway The only thing I cant decide on is caliber. I am set on a 7 mag of some sort, but as for which one I dont know. I have looked at the Lazzeroni, STW, Allen magnum, and others. Under the right conditions and shooter, which 7 mag is most capable of accuracy and power out to 1000 yards on elk. I plan on shooting 160 grain bullet either from lost river or barnes. Anyone with prooven horsepower rounds with great accuracy, or slower rounds with prooven kills. I want to know which 7mm are king, I am open to all opinions and really would like alot of input!

I did a search and really couldnt find much on this topic.

Thanks for your time. [img]/ubbthreads/images/graemlins/tongue.gif[/img]
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  #2  
Old 11-09-2005, 11:42 PM
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Re: New here......Help me build a Tack Driver??

Check out Kirby Allen (Fiftydriver) and the 7mm Allen mag he builds. You can get his info from the site and contact him directly, or ask questions on this site as he seems to monitor it frequently.
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  #3  
Old 11-10-2005, 12:15 AM
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Re: New here......Help me build a Tack Driver??

Traks44,

I am not so bold as to say my 7mm Allen Mag is the "King" of the 7mm rounds but combining the proper bullet with this round and chambering in the proper rifle will get you a 1K elk rifle easily.

Please do not take offense to this but in my opinion, forget about the LRB bullets. I have yet to see them be consistant enough to provide what you will need for good terminal performance. At 1000 yards you will get pin hole wound channels and thats it.

The Barnes is better terminally but again this bullet works on speed to open up properly. The Barnes bullets do not offer a BC value that will retain alot of velocity at long range. Combine that with the need for good velocity to expand and you will run into terminal performance issues at long range.

As far as rounds go, all you list will work. In my opinion, the Lazzeroni is far overpriced for what you get in case quality. Performance is great but from what I have seen the case quality is not up to the +$2.00 per case price.

The STW is a great round for sure. The 7mm RUM would be even better with a good heavy weight bullet. If your serious about long range, no matter what chambering you go with, take a hard look at the 200 gr ULD RBBT from Wildcat Bullets. It offers higher retained velocities and less wind drift then any other 7mm bullet that I know of.

In my personal 7mm AM. Loaded to a VERY mild 3120 fps. I still have +2100 fps and right at 2000 ft/lbs of energy at 1000 yards. Combine that with a lead core bullet for good expansion and a sectional density of .354 and you can see that penetration will not be a problem.

Top end velocity is around the 3250-3275 fps range with this chambering in a 30" barrel. In a 28" pipe you will loose roughly 60 fps is all, still 3200 fps easily with top loads.

As far as your list of componants, If your able to consider the Nesika Bay receiver financially, get one. I assure you you will never be sorry for making that decision. I would personally recommend a McMillan A-5 stock and of course the Jewell trigger is a great choice as is the Rifles Basix triggers.

Like the Nesika Bay receiver, if you are able to consider the Nightforce NXS scopes, GET ONE! I have the 3.5-15x50mm on my 7mm AM and just finished some testing at 988 yards on targets as small as 5" in diameter. These are great optical systems, you will never go wrong.

If you go with a Leupold, get one of the Mk4 variables. Good scopes.

DO not get caught up inthinking you need alot of magnification power. I would go no higher then the 5.5-22 if you go with a Nightforce or a 6.5-20 in the Leupold. For big game hunting there is no need for more and the higher power scopes only decrease field of view and have less vertical adjustment.

Once you get used to it, 15x is more then enough to target animals as small as coyotes, an elk would certainly be easy to sight on at 1000 yards even with 15x. Still some like more power but I would not go over the 5.5-22 or the 6.5-20. Just personal opinion.

I would like to come back to the bullets. Again, really all the chamberings you list will do what you want. Of the ones you list the 7mm AM offers the highest velocity potential with the best case quality. Above that though is the specific bullet selection.

There may be no "king of the 7mm cases" but there is the 200 gr ULD RBBT and no matter what you shoot it out of, it offers the best ballistic potential of all the 7mm bullets offered today when you consider ballistic and terminal performance as well as accuracy potential.

Whatever you choose, get a 1-7 or 1-8 twist barrel and give them a try, you will not be unhappy with the results. If fact they will amaze you at long range.

Personally I would recommend a Lilja 1-7 3 groove barrel. These are the only barrels I use on my 7mm Allen Magnum rifles for my customers and my personal rifles.

If you want to use a 160 gr bullet I would look at the 160 Accubond as well. It will perform better terminally at long range then the other two 160 gr bullets you list. On average will hold tighter groups as well.

Most importantly, have someone that knows what they are doing build the rifle for you. THe rifle building is the most important aspect to getting what you want.

If you want more information on my 7mm Allen Mag drop me an e-mail and I will give you all the data I have.

Kirby Allen(50)
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Web Page: www.apsrifles.com

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  #4  
Old 11-10-2005, 12:24 AM
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Re: New here......Help me build a Tack Driver??

Glad to see you have the right parts and pieces in mind and don't want to cut corners. Better to buy right then to find the right buy.

The .284 bore is an awesome caliber and deserving of serious attention. However, I will say I like the .308's and .338's a tad better for 1k big game hunting. But, the .284's can and do kill waaayy out there.

I have worked closely with any number of 7mm remmy's, a few 7 ultras, a few 7 stw's, one 7 WSM, several 7mm wildcats and even one boring (well that's what some people think).284 winchester. Of them all, I have two clear favorites. The first one is absolutely mind blowing for performance yet burns 10-15 grains LESS powder than a 7 ultra. It is a wildcat invented by my dear friend, 7mmrhb as he is called here. That also happens to be the name of his cartridge. He was the first guy I know of to take the 300 ultra mag case and have forming dies made from scratch to convert it to another caliber and shorten the overall length while lengthening the neck. He did this in 1999 when the ulras were hot off the press.
It is similiar in shape I believe to the wildcat the John Burns uses on "Beyond Belief" which kills oh so nice.

The 7mmrhb is capable of launching 140 grain bullets at 3500-3600 with 85 grains of powder!! It can push 160's at better than 3400! Truly astounding performance that vastly outdoes it's parent case based 7 ultra. ONe drawback to this cartridge is case prep (obviously) so it isn't for everyone. You must love brass bending until the wee hours of the night!

My second favorite 7 is much easier to make and the reamer is already in the hands of Fiftydriver and the dies are simple to aquire. It is called a, well wait a minute, it doesn't really have a name! My uncle's rifle is stamped .284 BSM but I don't know if that is the name of the reamer. It was built by Fifty driver and is nothing more than a 7mm-270wsm with a super long throat for shooting 160 grain bullets seated way out to make use of all available case capacity. It is also designed around the Norma 270 wsm brass insead of the winchester brand. It must also be used as a single shot for a short action or be built on a long action with an altered follower.

THis little beauty is launching 160 grain bullets at 3200 from a 25 inch barrel using only one grain more powder than my uncle's previous load in a 7 mm rem mag! The 7 rem was averaging 3000 fps and the 284 whatzitgonnabecalled gets 3200 with almost the same load!

Both of these little cats are capable of cleanly killing elk and deer at a little over 1000 yards and have proven to be quite accurate thus far.
They also have good to decent barrel life so you won't be afraid to practice with it which I believe is the most important factor in becoming lethal at 1k.



Of course, Teddy killed elephants with a 7 mauser! [img]/ubbthreads/images/graemlins/wink.gif[/img]
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  #5  
Old 11-10-2005, 09:09 AM
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Re: New here......Help me build a Tack Driver??

GG,

I would agree with your comments and recommendations.

One thing though, from what I understand, Burns was just using a STW with a custom designed throat. I do not follow his work all that much, kind of do my own playing as well [img]/ubbthreads/images/graemlins/grin.gif[/img] but I thought that is what he was using.

On the 7mmrhb, how much was the 7mm RUM shortened in body length? Must be quite a bit to get an 85 gr powder capacity as my 257 AM based on the 338 RUM case is using 91.0 gr of 872.

Is it comparible to the 300 Dakota in case length? I am using this for my Allen Xpress rounds and with the 6.5 mm AX I am using 90.0 gr 872 under the 140 gr bullets for 3320 fps. This is not a full blown load but its up there. He must be running some good pressures to get another 300 fps in basically the same case capacity, smokin!!

Also, what barrel length is he using to get these velocity specs and what is the case life with the Rem brass?

Not flaming at all, just curious about the specs he is using , great performance for sure.

Finally, why not just use the 338 RUM case so the shoulder does not need to be set back as far?

Just curious??

Kirby Allen(50)
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Web Page: www.apsrifles.com

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  #6  
Old 11-10-2005, 10:33 AM
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Re: New here......Help me build a Tack Driver??

traks44:

First of all, welcomd to LRH.

You asked for opinions so hereís another one:

You mentioned Nesika action, McMillan stock and night force scope. I agree with you there, as these are all great components for a long range gun. I would have to disagree with you on the bullets though. Along the lines of Kirbyís comments I would suggest you look strongly at the Wildcat 200 grain ULD RBBT bullet. I have used these on deer at 862 yards and elk at 690 yards and they are awesome. The retained velocity and energy at long ranges make for a fantastic long range killing machine. Shoot a heavy for caliber bullet in a quality built gun and youíll never look back.

I would stay away from the lighter bullets if you truly want a long range elk hammer. Launch the big Wildcat at about 3200-3250 fps and nothing at 1000 yards will withstand the impact. If you really want to see something interesting, run the numbers on the 200 grain Wildcat out to 2000 yards and youíll be amazed at what itíll do. The lighter bullets will look great at shorter ranges and will kill great at those shorter ranges but the big 200 will walk right on by them from about 700 yards or so, on out to as much as 2000 yards. Also remember that the big 200 grain Wildcat will buck the wind better than anything you can find out there.

The 28Ē barrel will work but if you want to wring out everything possible from your new long range gun then Iíd suggest you take a look at the 30Ē 3 groove from Lilja. If youíre gonna be packing it through the brush then something shorter will work but for a true long range hammer, Iíd go with the 30Ē. Iíve got one and that sucker is a work of art. Itís a #8 contour with the heavy fluting.

Kirby wonít say that his 7mm AM is the best 7mm around but I will tell you that when I decided to build my long range gun money was no object. We looked at every available component and every available chambering/bullet combination. I chose the 7mm AM and had it throated to seat the big 200 grain Wildcats way out and it shoots fantastic.

If youíre interested in what something like you are talking about, component wise would look like, Iíve included a couple of pics of my 7mm AM that Kirby built. If I had it to do all over again Iíd pick the same components, the same chambering, the same gunsmith and would shoot the same bullet. The choice is up to you but you said you wanted a 1000 yard elk hammer and I feel that this is the best there is in the 7mm caliber, bar none. I would call this round a ďjust barely cruising, 1000 yard elk roundĒ thatíll go well beyond that easily. Run the number before you decide.

As far as accuracy goes, this gun is shooting 1/4 moa using the fire form loads. I'll be working up full tilt loads soon, if the weather co-operates and the new bullets get here.

By the way, where are you located? If youíre close enough we might be able to arrange to get together and let you shoot this one to see what you think. [img]/ubbthreads/images/graemlins/grin.gif[/img] [img]/ubbthreads/images/graemlins/grin.gif[/img]



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Old 11-10-2005, 11:03 AM
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Re: New here......Help me build a Tack Driver??

The best advice I could give you Trak is to go with the 7mm Allen Mag.
Me and a buddy of mine were the first people to get the famous 270 AM and we choose it simply because of its raw power and the ease of loading.
In retrospect now I do see that the 7 allen would have been a little better ultra long range caliber, but I am not dissapointed at all in my 270.

If you want the current ultimate long range hammer in 7mm then the choice is obvious, the 7mm Allen Mag

I might be rebarreling to it in a year or so, depends on what the 185gr 277 will do.

take it easy
steve
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