When it comes it gunsmithing I'm a complete noob....

I have a CZ 550 Magnum .375H&H and thinking about converting it to a .416 Rem Mag.

What all would be required/involved in this conversion? Would it be more cost effective to just go out and purchase a new .416 instead??

Appreciate the assistance.

A simple rebarreling job should be about all required, maybe ssome feed rail work, maybe not.Probaly about 5 to 6 hundred bucks total for new barrel and chamber and threading the barrel and squareing the action would be my guess.

Where have you been????

I did that very same thing. New Douglas barrel chambered to 416 Rem. Mag. I think it was $400+???

Then added new NECG sights ($100+), and matte blued. Got a new bolt handle.

No feeding problems or changes needed to be made. Straight forward project.

I thought it would be pretty simple and straight forward! Thanks.

will be cheaper, seriously, to sell the 375 and get a rigby. the brass cost difference will be MORE than made up in the barrel cost.

416s are going for 750 on gunbroker.
if you take the
$200 barrel
$200 sights
$200 blue and gunsmithing

that means your 375 is "worth" $150

On the other hand
sell me your 375 for 500
get a 416 rigby 750
and you can buy 100 ($190) pieces of brass (lyman dies are 20bucks) in rigby and STILL be hundreds ahead

jeffe

Yea, it would be cheaper but you can get 5 Rems. down and only 3 Rigby's.

okay, so he's down another $65 and gets 4

quote:

Yea, it would be cheaper but you can get 5 Rems. down and only 3 Rigby's.

If you are still shooting at something dangerous after 4 rounds, and haven't had time to reload, the problem is more likely MARKSKANSHIP, and that won't be solved with more MAGAZINE capacity. JMHO

Geronimo

What about a re-bore?

quote:

Originally posted by Geronomo:

quote:

Yea, it would be cheaper but you can get 5 Rems. down and only 3 Rigby's.

If you are still shooting at something dangerous after 4 rounds, and haven't had time to reload, the problem is more likely MARKSKANSHIP, and that won't be solved with more MAGAZINE capacity. JMHO

Geronimo

I could reply to this but I won't.

Actually, the rifle in question is AHR DGR in .375H&H (built on CZ 550 Magnum action). Rebarreling seemed a cheaper option as opposed to building a new one.

Spoke with Ed Plummer this evening and sounds like a good option.

Thanks for the assistance.

quote:

Originally posted by FOsteology:
I have a CZ 550 Magnum .375H&H and thinking about converting it to a .416 Rem Mag.

Oh my.. certainly an AHR is not the rifle I had in mind, though I didn't understand that part.

Rebarrel is certainly the best way...

If you would like to shoot a 416 prior to rebarrel, i think i can arrange it, though scrounging up a rem might be harder than most

jeffe

Jeffe:
Isn't reboring cheaper, and doable in the CZ 375 to 416? My gunsmiths been trying to sell this one to me, and going to the 416 Rigby, instead of the 450 Ackley I'm leaning towards.

GS

GS,
a rebore is more or less 200bucks, plus chambering, BUT there's no insurance you'll get a good barrel. sorry guys, i am still nervous about reboring, though Jum Dubel is going to be receiving a project from me, pretty soon.

on reboring your 375 ... it's more or less the same price to go 416 or 458 on a rebore. but I'll swap you even for your 375 barrel for a 416 barrel?

jeffe

Jeffe:
I'm after a .458 Ackley.
But, let me think about it a bit. You don't have one laying around, do you, in 458?

Thanks

GS

Danny Pederson with Classic gun and barrel works will rechamber and recut the rifling in the gun for around 175.00. That's what I would do, no sights, etc. Barrel has plenty of steel for a 375 to 416 caliber, you would loose a little weight. I just got back my wife's Win. Model 70 which was a 270 winchester and now is rechambered to a 30-06 which shoots sub MOA at 100yds. If you don't like it-your not out much and Danny has a pretty good turn around time most of the time.

GS, sorry, i don't have any of the 45s... I kinda collect those

Make up your friggin' mind!

I read these posts where re-boring is a terrible thing to do and then I read posts where it is a simple and inexpensive procedure.

If it is really a $175 project then I wasted a bunch of money re-barreling*.

*But I wound up with a slimmer contour than the original CZ barrel, which I assume someone will say is just another $5 when you get the re-bore.

I had my Fathers worn out FN 30-06 rebored to 35 Whelen by Dubel, I am mostly happy with it a but am considering sending it back to get the throat freebored a bit longer. I have to deep seat bullets as they contact and pressures get a little peaky to soon. I also have an old FN Browning 338 that started life as a 264. It is a real sweetheart and I would not trade the old girl for a new magnum of any sort. They are both veterans of many years and hunts so the attachment to them is why I didn't have them rebarreled. If I had a newfangled with no family attachment I suppose I would get it rebarreled. As far as the 416 goes-- the old guide freind that gave me the FN Browning has a 416 Rem and one day he told me, Pard--- that 416 just destroys bears. He point blanked a brown in the throat with his 300 H&H many moons ago and got mauled for his trouble. He has dumped and seen dumped stacks of brown /grizz from the Brooks to Kodiak and the Ak Peninsula with all sorts of cannons and he claims the 416 is the bar killer deluxe!

Will,
this clear it up?

quote:

Originally posted by jeffeosso:

a rebore is more or less 200bucks, plus chambering, BUT there's no insurance you'll get a good barrel. sorry guys, i am still nervous about reboring,
jeffe

Thanks Jeffe

Send the barrel, and we are on for the swap, 375 for 416..

GS
PS
Please send the barrel to:

http://www.jrhgunmaker.com/

Mr. Huntington will have a look, pull the barrel off my gun, and send it to the address you request.

PPS My barrel is in excellent condition, with less then 100 rounds through it.

PPPS Here is Jack shooting my gun:

JEFFE!!! CALLING JEFFEE!!!!

DEAL IS ON!!!!

GS

GS,
You cannot convert a CZ .416 Rigby barrel to a CZ .416 Remington barrel. You have to cut off too much shank to get rid of the larger Rigby chamber.

Do you want to go to .416 Rigby with your .375 H&H? That can be done with a switch of CZ barrels.
Beware of Jeffeosso's take-off barrels of other make.

My statement of the obvious is just an excuse to get this in:

Tell Jack to say "Hi" to Gil Van Horn for me.

regarding the capacity of the Rigby-

I have worked over 2 CZ 550 .416 Rigby's and both held 4 down with no problem and no modifications. Not saying all will, but at least 2 of them out there will. Both of them said ".375" on the magazine

One advantage of a re-barrel not mentiond so far is that you can choose to have a stainless steel bbl if you ever plan on hunting wet climates.
My experiences with re-bores has been that - -with the one exception of a USRAC stainless 375 I was having re-bored to 416 Rem that failed (I was warned by the barrel maker that it was a serious possibility with those barrels) -- with a quality craftsman they are as good as, and often better than, the original barrel. It certainly is no more risky than trading barrels.

Darn, I must be going brain dead. During my little computer work session, Jack said something about getting a barrel reboring machine, and, it went over my head. Have to see what the timeline is on it.

I thought Jeffe was referring to a 416 Remmington barrel. But, since CZ doesn't make a Remmington, I just realized it's a 416 Rigby.

GS