Three locking lugs rated 39,000 lbs of shear, and if a fourth bearing lug is put on bolt a total of 50,000 lbs shear rating.Bolt diameter big enough for 12GA FH and
700 NE, and will take 35k loads on those two.Could be reworked for 577NE and other NE rimmed cases, and could handle full pressure with them.Bolt head can be changed to fit about anything smaller than 12GA FH. Barrel thread is 1.115 in by 20 tpi.It has a regular recoil lug, which is amazing cosidering where it came from and only 400 bucks new, as acomplete gun.Just the thing to get folks into big bores.Buy a heavy barrel, about 1.4 in and have fun..ED

And the make/model is.....



(please don't say it's a Marlin goose gun)

Tease

Spill the beans on the rest of the info.

RNS

Ed,
You are developing a mean streak
Put us out of our misery.

Karl.

Savage 210 Bolt Action 12 ga slug gun.Comes with a lighweight plastic stock.I will sell that and use aheavier one I have here,..they also sell a camo stocked turkey smoothbore 210 bolt action.

I will open port, change bolt stop and do a 12GA FH at

3.8 in long or I could do a 700 NE at 3.5 in long case.it has a huge bolthead on a regular savage bolt and and that is inside a huge bolt carrier that stays in its raceways

for smooth working.The carrier has three ribs matching the lugs that guide it real well in the action.NOTICE THE REGULAR RECOIL LUG!!...Ed.

Jeepers!

Ed what's 35K get a 700NE and the 12gfh velocity wise?

Might try and get one of these for 700 since borchardt is no longer interested.



Karl.

Karl--A 1000 gr bullet about 2100 fps.Ed.

This is the action my father was wanting to build his wildcat on.

Not so much of a wildcat, more just a refined usage of an already prodiced round.

His thought was brass 12ga hulls, loaded with 1450g bullet or thereabouts to around the same fps, in a rifled barrel.

Still not quite sure those teeny lugs will hold much in the way of bolt thrust.

You first, Ed!

I'll go first!
Who wants money to build it for me?

Karl.

Ed,

Very cool! That extractor looks kinda puny! Looks like a fixed blade ejector too! Now I feel I need to purchase one of these Savages, thanks!

Scott

Bwana--Those are not tiny lugs. They measure .38 inches
wide by .50 long and there is three of them.Plus bolt handle
for safety.It has a third more lug cross-section than
Weatherby(Wea .40 sg in -Sav .56 sg in).It is like the three lug Texas Mag and Champlin.As much cross section as
the 9 lug Browning BBR.Only it has a larger bolt diameter
for the bigger 12 ga base.It should get a 1400 gr bullet to
14-1500 fps.With real long cases it may only be single
shot,I haven't got that far yet in checking to see what
the longest a mag can be.I know the port can be lengthened and a different bolt stop set up.Ed.

Scott-The way the extractor is set in the bolt head it is
easy to widen slot and put in a wider stronger extractor,
as I plan on doing also.Ed.

Dad's original idea was simply 12ga rifle using rifle-style slugs, rather than brenneke or other "shotgun" style.
Amazing, actually, if it is as easy as putting a rifled barrel on and custom ordering a mould, that no one has done it yet.
Look forward to seeing how it goes.

Ed,



I figured you would "fix" it, I was only commenting on how scrawny the factory extractor was! That makes Remington 700s look manly!



So when do you think you will have your Savage Big Bore operational? I assume you are going to make it a single shot, since the magazine is too short for feeding anything over, what 3"?



Scott

Might have it ready by middle of summer.Not enough hours in the day, or money to do things fast.

Been checking for what could be done for a magazine.And if the bottom is opened to the back 3/4 in and an eighth of an inch from front, a single stack mag about 4.1 inches long

can be put in.Probably could be made to work mag feed in

700 NE as that case is 3.5 instead of 3.8 like 12GA FH.Ed.

Ed,

This may sound dumb, but is the steel being used in this action the same as their 110 series? Is it milled like the 110 series?

Also, seems that Savage is savy enough to have put this action out to the wildcat market. Why do you think they havn't.

Roger QSL

Yes it is the same steel as their 110 rifles.The lugs are
are hard as my rifles.The action is as hard as my
Enfield and Ruger. Savage like other big companies don't put
stuff out for wildcatting or improved cases.

Ed,

Could a 50 BMG, shortened to 2", necked down to 458 be done on this action?

Rogr QSL

Roger-Yes, as long as pressures were kept lower than

35k. You still only have room for about a 1.4 in diameter barrel, into a 1.115 action thread, with a case diameter

of .804 at base. The 35k is half of what bmg case operates at in guns with 2 inch diameter barrels.May have to make a bolt head, which can be changed, to fit smaller rim diameter.

Why shorten bmg that much?And go through the hassle of

putting a neck in that part of a heavy case, Just get spotter rounds and neck them down, and shorten neck.Ed.

I would be intrested in one in a 577 nitro!! Keep us informed. I might just by one in case.I have seen them used $295.

Liled--I missed one at $269--They are a good buy I think to do big bore work with,

as long as folks rember that with BMG size cases keep

pressures 30-35000 psi, which is half the operating pressure of BMG cases at full loads inside of a two inch

barrel.Which the Savage isn't big enough for.But with 577

it could run 55k loads if you want, and have modern brass.

And different bolt heads with extractors aren't that hard to make, and just heat treat after machining.

NOW IF SOMEONE WITH TOOLING AND MACHINERY COULD TAKE THE

SAVAGE BOLT AND BOLT CARRIER AND MAKE A LARGE TWO INCH DIAMETER THICK SIDED ACTION WITH 1.5 IN DIAMETER THREADS FOR 2 IN BARREL,longer barrel threads, for bmg size cases.......Oh, the possibilities......Ed.

Ed,
You are over my head. I would like to make a 577 bolt action but it looks like that this would take a lot of work.Mag box? Stock? ect. I would not know where to start????
liled

Liled--If you get one, and a picture of how bolt is built,
you will soon figure what to tell the machinist to build.
The 12 ga bolt face has slight edges in 3 spots to hold rim centered. For 577 you would have bolt head face with a thicker flange all way around top half to center 577 rim.
The 12 ga bolt head is set up by the way for controlled mauser feed.Savage bolt heads can be changed easy.For a mag build a single stack box mag, and open action in the back to
hold it.For a stock just inlet a good heavy stock to take
action, it has a regular mauser style recoil lug.Get a
577 heavy barrel. It is not as hard as some of the conversions being done or attempted that you see on
here.Ed.

Ed, if it can handle 30-35ksi, then what about shortchambering a 50bmg barrel and putting it on, then load to 30-35k. The short chamber wouldn't allow a regular BMG to be loaded and blow you up, but would still give impressive 50cal performance?



A quick run through quickload shows a 570gn Woodleigh out of a 24" bbl with RL25 doing 2200 at 27.1ksi with case capaicty reduced by 10gns.

Lar--That's neat way to do it. Also, if you set it up with
spotter brass it would work.If set up with NE cases, also,
none of the factory loads would be to high.I really think it will shine, so to speak with 577 NE,600 NE, 600 OK and
on up. When you look at that bolt, it just says real big bore.And what could be more fitting than to see Savages in
huge bores, by and for the little guy who will never have a
15 grand fancy double.Ed.

ED- I actually looked at this action and another 12 Ga shotgun action with locking lugs more on the Mauser like design( forget who made it now). In the end, I kinda came to the conclusion that I could not get anything more out of it than I could out of an encore. I did not consider making a bigger single stack mag though or potentially using it for a .577NE or even a .600 NE for that matter! Good idea!You'd probably only have to make new extractors! We talked about the 12 Ga FH short and it's actually easy to do on a 12 Ga Encore barrel just by running in a 12 GA FH reamer. Using very slow powders like H50BMG in these extremely large bores results in very low pressures. The encore should be able to handle this level of case thrust as 35 Kpsi just as well as the shotgun action.They are incredibly strong! Given that the Encore barrel is a smooth bore and you can screw in a rifled choke at the muzzel where pressures are lowest, you can essentially easily duplicate and exceed the old 12 Bore paradox guns.-Rob

Rob--That is the great thing about these big bores(12Ga FH

long or short) at moderate

30-35k psi. Just fill case with BMG powder or similiar slow powder, and have more power than factory stuff. No squib loads or fillers to monkey with.Cheap surplus powder, and no worries about pressure spikes with full cases and brass never wears out.And you can use Encores and Savages.

The Savage like you say, looks as if it will work with

wider extractor, with extra reach clear down to the .750

diameter rim size of the 577. Getting it measured and figured out now.And will get a couple extra bolt heads from

company, next week or two.Resident tig welding expert in the area says that

with bolt head in water, he can widen the three guide tabs

that centers case, without affecting bolt head strength, and I then machine it for rim diameter.Cut a wider slot for heavier extractors.Make heavier extractors with more reach

for smaller diameter rim.I will have two extractors as we

will make the left one with a hook to act as an extractor also instead of a lever to hold case against othe rextractor.. We are going to ask company if they made

a 20 ga model, as that rim size recess, if they had one,

would work for 577 and be easy to turn out for 600 NE at

.810 diameter,and same for BMG cases, etc.Know next week.Ed.

Ed,

Interesting scenario you've created.

I measured a 50 BMG rim and came up with .800" and a 12 gauge rim at .880". Not a big difference. Seems that a good smith wouldn't have much trouble in working the bolt face to accept the fifty.

I don't know the length of the magazine box in the Savage, but suspect it wouldn't be much larger then a 12 gauge round. A double 0 buckshot shows 2.450" of o/a length. If the BMG case were to be cut to 2.1" and reduced to 458 caliber, there shouldn't be a lot of work that would have to be done to the magazine well. (Maybe)

I'm sure you are well aware of the new trend in shell development. Short and fat. These case's seem to do as much or more then the rounds they are replacing. Seems this should also apply to a short, stubby, and easily available 50 BMG.

If 2150 with a 500 grain slug, be obtained with very low pressure, a DG round could be done with moderate expense.

I can see the boys shuddering at the thought of a Savage being used as a stopper.

Anyway, I will watch your progress with the Savage action, as well as John Noveske's 458 WSM.

Roger QSL

Some like short cases, but you wouldn't have to go that short.Mag well comes at 3 in long.And you could stay at 50 cal by using 50 cal spotter

brass which is 3 in long and with a 600 gr Barnes I put in

the one I have here, it has a overall length of 3.8 inches, or neck it down to 458, and have a little shorter overall length. The action can easily be opened up for a box mag of 4 plus inches.Single stack for large diameter cases.

I just took a bmg case, cut back to 2.1, subtracted half inch for necking it down to 458 and the area where bullet sets, put in 4320 powder and it holds only 100 gr. The 1.6 inch length left for powder is in reality 1.3 inches after the .300 plus, thick base is subtracted.The longer skinnier

Lott would do better than that at a little lower pressure.

You make them too short, and back to high pressures to get

the power.In this case, about 45,000psi to get a 500 gr

458 up to 21-2200 fps.Ed.

Damn, Damn, Damn, just when I finally crawl of debt from the last project-along comes another one... Hubel458, why'd ya have ta go and show me that?! Now I reaalllly regret not grabbing those .700 barrel blanks Butch Searcy was sellin' on AR a couple of years ago...

Toolmaker