The 475 Turnbull received the approval of the SAAMI board and is now a recognized cartridge.

Doug

Congratulations!

Doug,
that is good news !! do we get a discount now on some of those beautiful levers

Are you gonna license it to Marlin?

quote:

Originally posted by Mikelravy:
Are you gonna license it to Marlin?

i don't think Marlin would be interested in the amount of reworking of their current platform to house the Turnbull chambering as it is based on the 50-110wcf case. and they would be more likely to promote their 450 Marlin round.

I thought the 475 only fit the 1886? Isn't it the 470 that will fit in the 1895?

Doug, congrats buddy!! Thats a very fine Big Bore lever action cartridge you got there.
And Thanks Again for sending one for us to shoot at last years Big Bore shoot here in MT. That was VERY Nice of you!!!!!!!!

Doug,
A question--

I have been told to build a 475 Turnbull on the Miroku USRAC 1886 instead of the Miroku Browning 71--

because the "slant angle" of the 71 is "less strong" than the "straight angle" '86 on the locking lugs.

I prefer the curved lever of the 71.

What do you think?

That all depends if you want to load it over the SAMMI spec of 42K PSI. I do not see that one is stronger than the other. The 71 slant lugs was done in my opinion because when you load the 348 "higher" than sammi the case expands in the chamber and that could can create a "tight lever" if they did not use the slant lugs than in a 86 you neeed to "tune" the action so this will not happen. That is why they made the slant lugs for the 71 along with the small firing pin so not to pierce the primer under higher pressures.
In a 86 Jap or US if the bolts are not fit properly than at 46K the case fills the chamber tightly and when the lugs are dropping it will push the bolt forward .0005 to .002" forwards and it will make the lever tight and sticky. So the 71 slant lug getts around this and less need for fitting at the time of production.
My 1887 vintage 86 has fitted bolts and will not have a tight lever even when shot with proof loads in the 50K range.

Thank you for the prompt response

and your explanation for the reason for the slant lug.

Looking at the two side by I could not see why one was any stronger than the other.

Doug, the styling of the Turnbull rifles is magnificent....can't say the same for your choice of hats!!!!!!!!!!!

That hat stands out in a crowd and you can find me faster than any other way at the shows, just look for the hat.

That is no lie! I found him at the SHOT Show from 100 feet away.

Rich
DRSS

yeah and especially since he's about a foot taller than most people!

if you take off his hat he's 4'9" tall
I know I know it was a cheap shot but after meeting Doug in Dallas this year I knew he would get a grin out of it. congratulations Doug

Congratulations Doug!

quote:

Posted 07 August 2010 01:03 Hide Post
if you take off his hat he's 4'9" tall
I

Yes I did Thanks!!

6 ft+-

Doug... Congrats!
Please tell us about the process of the approval if you have the time.
Also I am still holding out hope you will do a 400 Turnbull off the 348 case to get 400 grain bullets to about 2,150 fps.
Maybe borrow the reamer and dies off Michael458 from his soon to be 410 B&M
PS How is the 348 Turnbull coming along?

I RECENTLY TOOK MY 86 WINCHESTER TO AFRICA IN PURSUIT OF CAPE BUFFALO. I HAD LOADED MY 400 GR TSX TO 1900FPS AND MY 400GR BARNES SOLIDS TO THE SAME. MY PH WAS NERVOUS ABOUT THE VELOCITY AND PENETRATION OF THE TSX ROUNDS. HE HAD ME LOAD ONLY SOLIDS. I NEVER GOT A SHOT AT A SHOOTABLE BULL SO I DID NOT GET TO TEST THE ROUNDS. I CAME HOME AND LOADED THE AMMO TO 2100 FPS AND DO NOT CARE FOR THE RECOIL. THERE IS SOME DISAGREEMENT RE. VELOCITY VS PENETRAATION. WOULD ANYONE CARE TO COMMENT? THE 1900 FPS LOADS ARE QUITE NICE TO SHOOT FROM THE BENCH OR THE STICKS.

Doug, any chance of Ruger chambering the No. 1 for it?

Congrats Doug. I know how much work you put into it. Any plans on getting the .470 through saami? reflex264

Doug, When will you return to the Ohio Gun Collectors Show?
Jim

quote:

THERE IS SOME DISAGREEMENT RE. VELOCITY VS PENETRAATION. WOULD ANYONE CARE TO COMMENT? THE 1900 FPS LOADS ARE QUITE NICE TO SHOOT FROM THE BENCH OR THE STICKS.

I have seen a bison shot with the 400 grain TSX bullet at a muzzel velocity of 1900 and the animal was shot 2X at 80-90 yrds. The bullet expanded to .600 cal and penetrated to the far side with both bullets. I cant think of why the PH owuld not have let you use the TSX as the first shot on a buffalo in Africa. They jsut understand the performamce of the cartridge. The 400 TSX is jsut a perfect bullet inthat caliber. Tony Makris of Under Wild Skies swears by the 475 Turnbull and the 400 TSX for doing everything that it was reported to do and it does it really well.


As for the OGCA I most likely will be there but have a conflict with a video deer hunt here in NY. Keep you posted.

doug thanks for the response. what is your favorite load in the .475 for dangerous game, both africa and alaska? solids? tsx? velocity for both? thanks in advance tom

I use the Barnes 400 TSX for every thing that I would not use a solid for. The laod in a Starline case is 56 gr IMR 4198 for the TSX and for a solid 54.5 gr. IMR 4198. (Useing Jamison brass, reduce the loads 1.5 gr to have the same POI) The velocity is 2100 FPS and I have found that this works great from point blank and the bullet opens to .900 cal. to .600 cal at 200 yards for the longer shots. On a buffalo size animal if shot in the shoulder the bullet will be under the hide on the far side. An elk shot from rear to front teh shot tends to be in the front portion of the shoulder. IT JUST WORKS!!! I shot a asiatic buffalo in florida with solide that was running straight away and at about 60-90 yrds, I found two under the hide at the front of the shoulder so end to end penatration. The bullet and caliber design I think and others that have used it seems to be about as perfect as it could be. I have not lost a petal and they always seem to open up at least a bit, over the bore caliber.
These loads have taken many buffalo, bison, elk, white rino-not me, 2 elephants and on one the bullet-solid went the complete length of the animal/cow tuskless.

Doug: Missed this post, but just read about the SAAMI approval in one of Scoville's columns. Congrats indeed.

A 470 Turnbull is in my very near future. Congrats on the .475 Doug!

Doug, I hope Taj sent some of his photos from this spring. He carried it all year from Bear season through the summer while guiding bear viewing clients. It is starting to show some nice wear and getting slicker and slicker to use