| Posted: Sun Mar 1st, 2009 08:34 PM |
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PhilLozano
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Building medium. Originally, I wanted to build a 35 cal, but after a lot of thought, I settled on a .338.
Here are some of the details -
Whitworth - (Commercial Mauser action, The donor was a 300 Win. Mag.)
Bartlein - 1 in 10 twist barrel (maybe fluted maybe not, will depend on weight and balance)
Gentry - 3 position Safety (removing the side safety)
Timney trigger - (the only trigger I can find that fits a Commercial Mauser)
Stock - Cut from a blank a client sent me. Classic safari style, pretty straight in design, as this rifle should have a fair amount of recoil and I wanted/like straight stocks.
BTW ~
Dan Warner is doing the metal work (reamers, dies, etc.)
I am pretty excited. I am hoping to get it back before my red Stag hunt. Can't decide if I want to shoot something with it before the Red Stag.
Will be chambered in 338 BOS
____________________
Best,
Phil
Stay out of sight and downwind
Professional Hunter / Tanzania
http://www.go-on-safari.com
http://www.go-on-safari.com/talk
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| Posted: Sun Mar 1st, 2009 09:35 PM |
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2nd Post |
Timberghozt
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Phil, forgive my ignorance on cartridges suitable for Africa but how much more wallop does the 338 BOS have than a 338 Winny?
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"He who fights with monsters might take care, lest he thereby become a monster; For if you gaze for long into an abyss, the abyss gazes also into you." - F.Nietzche
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| Posted: Sun Mar 1st, 2009 09:51 PM |
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PhilLozano
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Timberghozt wrote: Phil, forgive my ignorance on cartridges suitable for Africa but how much more wallop does the 338 BOS have than a 338 Winny?
Don't know yet. It's my own design.
I will probably need some help for starting load and suitable powder data.
I am hoping for 2800+ fps with 250 grain bullets
That should be about 200+ fps over the Winnie
____________________
Best,
Phil
Stay out of sight and downwind
Professional Hunter / Tanzania
http://www.go-on-safari.com
http://www.go-on-safari.com/talk
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| Posted: Mon Mar 30th, 2009 04:12 PM |
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| Posted: Tue Mar 31st, 2009 05:26 PM |
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Irish Mike
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Well Phil, excellent choice that .338 Caliber! NO FLIES On That Caliber My Young Man. 
.338-BOSS you say, interesting indeed, sounds close to the .340 Weatherby or abouts. Not to much difference lower than the .338 Ultra mag according to the new Nosler manual.
You gotta love the sectional density of those .338's indeed. You have a great day mate and watch our top-knot! 
Looks like that rifle stock is going to have a lot of charactor too. Nice looking piece of walnut Phil, congrats on the new rifle.
Last edited on Tue Mar 31st, 2009 05:27 PM by
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| Posted: Sat May 23rd, 2009 12:59 PM |
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| Posted: Sat May 23rd, 2009 01:01 PM |
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| Posted: Sat May 23rd, 2009 01:11 PM |
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Rockydog
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Phil, Coming along vet nice indeed! What case are you basing your .338 BOS on? RD
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| Posted: Sat May 23rd, 2009 02:01 PM |
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| Posted: Sun May 24th, 2009 02:34 PM |
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chuckscap
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Phil, weren't you having a 500 Jeffery built as well? How's that coming?
Chuck
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"There's a saying in prizefighting ... Everyone's got a plan until they get hit."
Michael Douglas "Ghost In The Darkness"
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| Posted: Sun May 24th, 2009 04:04 PM |
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PhilLozano
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Nope. l have all the big bores I need. A 450 N.E. and a 458 Lott for B/U work.
This is it, and more than likely the last custom build I will do, as I will pretty much use this for everything other than DG.
The only exception, is if I do decide to go ahead with a 35 BOS. It would have more frontal area that the 338, and would be a very nice medium as well. I do have a couple guys over on my site that still want a 35 BOS, so maybe I will get around to it if the 338 BOS is lacking in some way, but I don't think that will happen, as it shouold be pretty darn close to the 340 Weatherby.
Last edited on Sun May 24th, 2009 04:05 PM by PhilLozano
____________________
Best,
Phil
Stay out of sight and downwind
Professional Hunter / Tanzania
http://www.go-on-safari.com
http://www.go-on-safari.com/talk
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| Posted: Sun May 24th, 2009 05:00 PM |
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12th Post |
chuckscap
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Ah, well all I have now is my 500 Jeffery. I have to ask permission to use my youngest son's 270. It used to be mine, but I gave it to him last year :). I may pick up an older 300 Weatherby Magnum one of these days and have it rebarreled. Until then, the 500 Jeff is going to be hell on mule deer and elk until I get to Africa and Alaska.
Good luck with your new rifle,
Chuck
Last edited on Sun May 24th, 2009 05:02 PM by chuckscap
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"There's a saying in prizefighting ... Everyone's got a plan until they get hit."
Michael Douglas "Ghost In The Darkness"
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NoQuarter
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A true piece of artwork..I enjoy watching your progress on a very fine custom rifle.
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| Posted: Wed Jun 10th, 2009 10:40 PM |
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| Posted: Sun Jun 28th, 2009 04:03 PM |
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PhilLozano
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Went to the range -
To shoot my newly designed cartridge and rifle
Sorry this photo is out of focus, but this is what I got at 100 yards with the load listed.
The way the rifle came together, with an experimental cartridge and load, . . . . . what did I think about the results ?
Basic details :
Cartridge name - 338 BOS
Action - Whitworth (Commercial Mauser)
Barrel - Bartlein - Stainless Steel - 1 in 10 twist
Trigger - Timney - set @ 2.75 lbs.
Stock - English Walnut - Classic Safari
Initial R&D - First load . . . . first time out -
Caliber - .338
Bullet - 250 grain, Swift A-Frame
Powder - Reloader 22 @ 77.0 grains -
Velocity - 2,709 fps - @ 12 ft. from the muzzle
Energy - 4,000+ ft. lbs.
Warning !
Anyone that attempts or uses this loading data in any rifle, pistol, shotgun, cannon or any other type of weapon, is out of their friggin mind !
Last edited on Sun Jun 28th, 2009 04:05 PM by PhilLozano
____________________
Best,
Phil
Stay out of sight and downwind
Professional Hunter / Tanzania
http://www.go-on-safari.com
http://www.go-on-safari.com/talk
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msisut
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Phil,
This was very nice to follow your thoughts as you went through the custom rifle construction. Have you shot the 9.3x64 Brenneke? This is one rifle that has great knock down power yet the recoil is very manageable. Perhaps it would be fun to start a new thread to see how many hunters have this caliber.
Thanks for your effort to keep us informed on your 338 Boss project.
Regards,
Glenn
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| Posted: Wed Aug 12th, 2009 06:24 PM |
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18th Post |
PhilLozano
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Not exactly African game, but I tried it out in New Zealand first and with excellent results.
Tar shot at about 80 yards, Red Stag @ 276 yards.
The rifle shot well, and my wildcat cartridge took care of business.
I used 225 grain Nosler Partitions on this hunt. Shot both animals 2 times. The first shot on the Tar got one lung and exited the opposite side. The second shot was in the chest and was recovered.
Red Stag, first shot, double lunger and broke the off shoulder. Second shot when he got up was the same, but missed the off shoulder.
Not a comprehensive test by any means, however, so far, the rifle and cartridge has worked out pretty darn well.
I am getting velocities close to the 340 Weatherby (and I have not finished load development yet), with a standard length action.
The accuracy is without a doubt excellent and the rifle seems to shoot 225 and 250 grain bullets very well.
Anyway, here are some photos -
http://www.go-on-safari.com/NZpix/DSCN0885.JPG
http://www.go-on-safari.com/NZpix/DSCN0889.JPG
http://www.go-on-safari.com/NZpix/DSCN0910.JPG
http://www.go-on-safari.com/NZpix/DSCN0925.JPG
http://www.go-on-safari.com/NZpix/DSCN0926.JPG
____________________
Best,
Phil
Stay out of sight and downwind
Professional Hunter / Tanzania
http://www.go-on-safari.com
http://www.go-on-safari.com/talk
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| Posted: Wed Aug 12th, 2009 11:17 PM |
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Timberghozt
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Phil,you have a beautiful rifle..very impressive numbers as well with your wildcat..I think ya have a keeper!I enjoyed following your progress on it..
Are you still having issues posting with the new software while I have your attention a sec?
Gene
____________________
"He who fights with monsters might take care, lest he thereby become a monster; For if you gaze for long into an abyss, the abyss gazes also into you." - F.Nietzche
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| Posted: Thu Aug 13th, 2009 02:38 AM |
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swampshooter
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Congratulations, It doesn't get any better than this. Wow, what a beautiful red stag, and a fabulous rifle.
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