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APS Raptor XP-100

 
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  #8  
Old 08-20-2012, 11:23 PM
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Re: APS Raptor XP-100

Quote:
Originally Posted by Lefty7mmstw View Post
You build a heck of a weapon Kirby.
I'm partial to my 4x leopold.
I've killed prarie dogs to 1/4 mile with 4x using a single heel bag under a striker using a 7-08. I'll be re-barreling to 6x284 on my striker when the 22-250 is worn out. I sold my other striker when the 243 barrel went south three years ago and I'm feeling the pull of 6mm again.
If I want a 338 in a pistol I'll either go your way or a custom TC. I've played with TC and they do not disappoint.
A somewhat off the wall question. Are you altering the loads for the short barrel at all or you just going with it??
I build custom XPs in all chamberings from 223 on up.

I think you will find that the 6mm-284 will be a poor performer in the short barreled handguns because of its relatively low expansion ratio. There are some rules to follow to get good performance out of handgun length barrels.

1. The fastest load in a rifle will be the fastest load in a handgun. THere is no need to go to special powders.

2. The lower the expansion ratio, the more barrel length dependant the round will be concerning muzzle velocity.

3. If you take the same capacity and compare it with two differnet bore sizes, the larger bore size will produce higher velocity and often times dramatically more velocity as the barrel length decreases. For example, if you take a 6-284, 6.5-284 and standard 284 Win. The 6.5mm-284 will drive a 100 gr bullet probably at least 100 fps faster then the 6mm-284 will drive a 100 gr bullet weight. The 284 Win will likely drive a 140 gr bullet nearly at the same velocity as a 6.5-284 will drive a 120 grain.

If you want as much velocity as you can get out of a shorter handgun length barrel, step up to a larger bore size.

I am a fan of the TC handguns and rifles for that matter but they are not nearly strong enough for the big, high performance chamberings. Even moderately powerful chamberings have to be loaded pretty conservatively or you will start to get serious case stretching in the TC. Compare that to a bank vault strong XP-100, there is no comparision.
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Kirby Allen(50)

Allen Precision Shooting
Home of the Allen Magnum, Allen Xpress and Allen Tactical Wildcats and the Painkiller Muzzle brakes.

Farther, Faster and Flatter then ever before.

Web Page: www.apsrifles.com

allenmagnum@gmail.com
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  #9  
Old 08-21-2012, 07:46 AM
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Re: APS Raptor XP-100

I am not 100% sure what cal it would be, the 243 wssm holds merit also, as does the 243 and 25-06 if I go encore. I've been able to get 2800 fps with the striker with 100 grain in a 243(14"), so it shouldn't be tough to do a beat that with a bit more capacity. I've got a 44 for big bore engagement to 200 yards and over that I'll use a rifle so smaller cals are what I'm looking at for the most part.
We've noticed a rather marked improvement with pistol performance over the years by going with slightly faster powders than usual and lighting them hot, ie. a 215 in a 243. I could beat standard velocity by nearly 200 fps with v540 and not run higher than normal pressure. In a 24" barreled rifle the loads were about normal speed wise. With the enhanced pressure curve of superformance and a few of the other newer powders I could see where they would be trouble with a sub 20" barrel. With a 300 wsm pistol I'd look at rl17; it would be a hoot with 165's. I think my father is still using i4350 in his wsm pistol.
You are correct about the expansion ratio mattering in a pistol, but not as much as Herret and some of the others thought. I'm loosing around 400 fps with my 22-250 with a 14" barrel. It'll still do 3500 fps with 45 grain factory win's and do 5 in an inch at 100yards with it. I haven't worked with it with handloads enough to care on speed as my first couple loads shot well; load development complete.
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  #10  
Old 08-21-2012, 03:17 PM
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Join Date: Dec 2005
Location: Good Ol' Oklahoma
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Re: APS Raptor XP-100

Excellent!!!

I like that one Kirby.

I need one similar to that, but only in a puny 300 WSM or 300 RSAUM....


Regards,
Rog
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  #11  
Old 08-21-2012, 07:36 PM
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Re: APS Raptor XP-100

This design is a bit of overkill for a 300WSM but thats certainly not a bad thing!!!
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Kirby Allen(50)

Allen Precision Shooting
Home of the Allen Magnum, Allen Xpress and Allen Tactical Wildcats and the Painkiller Muzzle brakes.

Farther, Faster and Flatter then ever before.

Web Page: www.apsrifles.com

allenmagnum@gmail.com
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  #12  
Old 09-16-2012, 12:57 PM
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Join Date: May 2012
Posts: 3
Re: APS Raptor XP-100

Very interesting post! I've been shooting small game with my XP-100s and am interested in moving up to something more powerful and effective out past 1000 yds. One of these in 6.5 WSM or 260 Rem might be what I am looking for.
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  #13  
Old 01-19-2013, 09:40 PM
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Join Date: Jun 2002
Location: middle Tennessee
Posts: 372
Re: APS Raptor XP-100

As patient as I have been in your meticulous building of my CZ550 Safari Magnum based .338 AX, and am the owner of a stock 7mmBR XP with the addition of only a Fajen thumbhole stock; THIS XP-100 is BAD *****!!! If I hadn't been waiting for a year and a half for my CZ, I would be extremely tempted for you to make me a matching .338 AX rifle/pistol combo! Your work is simply beautiful, honestly. I will be excited to show off my special Magnum Mauser build when it is done.....I am so excited.....you have to be getting close after our recent emails. STILL, I am leaning toward a .358 caliber for my XP build. As much as I love the .35 Whelen, a XP-100 in .358 WSM would be awesome (just no match bullets in that caliber; sucks, lol)......I'm just proud to have my own "APS Custom Build" on it's way, and can't wait to share it here on the LRHFs!!!
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  #14  
Old 01-20-2013, 01:27 AM
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Join Date: Mar 2008
Location: N. Central Indiana
Posts: 550
Re: APS Raptor XP-100

Now THAT'S an Indiana legal handgun!!!!!!!!!!

I love it!!

Nice job Kirby.
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