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Old 09-25-2011, 01:23 PM   #1
Nontypical Buck
 
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Location: Rapid City, South Dakota
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Default Knight 50 Disc Extreme

When Chet learned i had drawn a couple of doe tags for Lacreek National Wildlife Refuge near his home, he offered to show me around. Wife and i stopped at Chet's place, met his wonderful family, and i was privileged to shoulder his mountaineer. Then we went on to the refuge, where Chet took us on a whirlwind tour of the 'good' places to hunt. After we unhooked the trailer, wife and i continued looking over the refuge on our own. Doing this, revealed Chet had shown us the very very best places to hunt, even though he would be hunting for a buck at the very same time.

At his place, i had expressed an interest in his 50 disc extreme. The next morning Chet showed up at the trailer with the rifle, and i made a purchase.

Yesterday i robbed the V2 of it's scope, and mounted it on the extreme. While we were traveling an old/new scope arrived from Leupold Custom Shop, and it was mounted on the 45 elite. Part of the day was spent getting them rifle to print on paper at 50 and then 100 yard.

In both rifle the fpj breech plug was replaced with with a nfpj breech plug, and the adapter installed on the bolt. The nfpj plugs and adapters were purchased from Knight and Gander Mountain. The plug purchased from Knight had been used in the 45 elite a while back; had the vent liner erode from 0.031" to 0.035". The brazed in vent liner was removed with drills, and replaced with a stainless steel vent liner. The plug from Gander Mountain was brand new, and has the brazed in vent liner in place.

It was my intention to use the new nfpj plug in the 50 extreme, but the W209 primer were so tight that the bolt couldn't be opened without persuasion. Both nfpj plugs worked in the 45 elite. The adapter used on the extreme bolt had to be driven on with a mallet; the adapter on the elite bolt slips on and off loosely.

This morning i went up and tried to do some serious shooting with them rifle. The elevation up there is abut 4700', and the temperature went from 55 to 70 whilst shooting paper.

The load used in the 50 extreme was 110g BH209, 300g Deep Curl, hph 12 sabot, and W209 primer.

The load used in the 45 elite was 120g BH209, 200g SST, blue Harvester sabot, and W209 primer.



The holes in the top target were made by the 45 elite; the holes in the bottom target by the 50 extreme; both were shot from about 100 yard with the cds dials set at 1. Minor adjustments were made in both windage, and elevation on both scope. After it warmed up some, the bolt on the 50 extreme refused to open with out using the persuader, to beat it open.

In the middle target, the holes to the right of center were punched by the 45 elite at about 200 yard with the cds dial set on 2. Three of the holes to the left of center on the middle target were made by the 50 extreme with it's cds dial set at 2, from about 200 yard. The bolt of the extreme had to be pounded open with a mallet. The windage of the 3x9 ultra-light on the elite was clicked 5 left, and a fourth shot taken; it can be seen this shot went into a hole previously made by the 50.

The first picture of the extreme shows it with the persuader.








Note how close the 33mm objective on the elite is to the barrel using the Weaver low rings. These low rings are lower than other low rings.








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Old 09-25-2011, 01:58 PM   #2
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That seems strange that you'd need a mallet to open the bolt. As for the rifle, it sure is a nice looking one.
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Old 09-25-2011, 02:26 PM   #3
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Default Disk Extream

You wouldn't think there would be that much variation. On the one I just bought, the primer holder part drops right in. The W-W primers are a perfect fit. The STS and CCI's are very tight and I've not tried to shoot them as I'd probly have to borrow your mallet. I'd like to get a spare NFP plug preferably w/the removable VL. These sure are nice rifles.
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Old 09-25-2011, 03:37 PM   #4
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You can't argue with that 200 yard group. That's impressive for the first time out. The 50 extreme groups looks every bit as good as the 45 elite. You shouldn't have any trouble dropping a deer with either one
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Old 09-25-2011, 03:46 PM   #5
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Ron I set up a tripod stand in that first set of trees and there were 9 does and 4 bucks came through Saturday when bowhunting. The biggest was a 4x4 so I let them walk. They were all within 12 to 20 yards. You shouldnt have any problem tagging out right away
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Old 09-25-2011, 04:00 PM   #6
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That's great Chet!. You had the fun of playing with them deer!

The extreme has a better trigger than the elite. I am considering installing the sights on it, and using it for the muzzle loader season there. It is my guess the primer pocket in the new bare primer plug, is too tight because they are coating the breech plug with the dynatek bore coating.






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Old 09-25-2011, 04:39 PM   #7
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Ron,

Congrats on the new gun. I'm always impressed with your 200 yard groups.

I found differences between my NFPJ set up in the 45 Elite and 50 Extreme. In the 45, Rem STS's fit just right but I needed to hammer them out ( figuratively ) from the 50. I played around a bit and found the Win209's just right for the Extreme.

Good luck find the proper fit. Knowing you skills, you may just create a new plug of your liking.
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Old 09-25-2011, 04:59 PM   #8
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Try the Fed209A in the tight plug. All of mine will take a Win209 but the tightest ones do very well with a Fed209A too.

I swapped plugs in the Savages this weekend and to my surprise the Pacnor 45 barrel is perfectly head spaced for a Win209 and its terrible IMO with a CCI209M. The Fed209A though is fine with that plug in the 50 cal and too tight with a Win209. They would stick on extraction.
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Old 09-27-2011, 11:40 AM   #9
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Quote:
Originally Posted by Gm54-120 View Post
Try the Fed209A in the tight plug. All of mine will take a Win209 but the tightest ones do very well with a Fed209A too....................................
Yesterday i installed the newest nfpj plug, i just purchased, on the lathe, and spun the lathe both directions at top speed while holding a strip of the plastic steel wool substitute in the primer pocket. When the wool had worn, i replaced it, and did it some more. Then this plug was installed in the 50 extreme.

This morning, i went out, and did some more shooting at 100, 200, and 270 yard. What i found was the Fed209A would not readily go into the breech plug, so i gave up on them. The W209 worked, and i was able to pull the bolt back using just muscle and fingers, until things got hot. After things got hot i let the rifle sit awhile, and then was able to pull the bolt back with my hands, but it took some muscle.

Both the 45 and the 50 were shot today, and the mallet was never required to pull the bolt back. The 45 works great; the 50 still is stubborn, but works. The loads used today were the same as the other day, except the short black Harvester was used instead of the hph 12. The following target was shot at 270 yard, and the holes dyed yellow were made by the 45.








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