I work away from home for weeks at a time and only have my cell to check email so doing heavy research has to wait till I get home, I sent an email via my cell to A square but im not sure if it sent so ill try again from My PC next week
35 Mag ????
- Thread starter waverace
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back to the drawing board
OK so its not a 358 sta, I ordered a couple of rounds to test against my chamber cast and ultimately to test in the rifle, well they arrived today and the shoulder on the sta is about an eighth of an inch further forward than my chamber cast, I tried it in the Rifle just in case my casting had shrunk but it wont chamber with reasonable force and I dont want to unreasonably force a live round that big or that expensive.
so its the same size all round as an sta but 1/8" shorter on the shoulder.
Pics to follow when I get home to my PC
:banghead:
OK so its not a 358 sta, I ordered a couple of rounds to test against my chamber cast and ultimately to test in the rifle, well they arrived today and the shoulder on the sta is about an eighth of an inch further forward than my chamber cast, I tried it in the Rifle just in case my casting had shrunk but it wont chamber with reasonable force and I dont want to unreasonably force a live round that big or that expensive.
so its the same size all round as an sta but 1/8" shorter on the shoulder.
Pics to follow when I get home to my PC
:banghead:
powell&hyde
Member
Your post from previous page..
OK so i did a chamber cast ....
What I have is as follows ;
neck .391 dia by .422 length
shoulder .498 dia
base .514 dia
mag belt .535 dia
main body length 2.16 from bottom of shoulder to top of belt
case overall length 2.85 approx from case mouth to guessed base, rimmed part sits outside of chamber so was not cast
Dimensions of 35 Ackley Magnum Improved.
Neck .389" dia
Shoulder .490" dia
Base .513" dia
Mag Belt .532" dia
Case length to shoulder 2.26"
Case overall length 2.81"
Shoulder length .080"
Neck length .400"
Shoulder angle deg 36.20
OK so i did a chamber cast ....
What I have is as follows ;
neck .391 dia by .422 length
shoulder .498 dia
base .514 dia
mag belt .535 dia
main body length 2.16 from bottom of shoulder to top of belt
case overall length 2.85 approx from case mouth to guessed base, rimmed part sits outside of chamber so was not cast
Dimensions of 35 Ackley Magnum Improved.
Neck .389" dia
Shoulder .490" dia
Base .513" dia
Mag Belt .532" dia
Case length to shoulder 2.26"
Case overall length 2.81"
Shoulder length .080"
Neck length .400"
Shoulder angle deg 36.20
remeasuring the cast those measurements are pretty darn close but the length to shoulder would be just too short , my casting falls right in the middle of the measurements between the ack mag imp and the sta at 2.33 now having said that the AI would fit and fire form beautifully , midway sells the dies and im guessing a 375 h&h would work as a parent case to neck down , I'll have to see if I can stretch the overtime this next month and shell out for that .
35 ackley imp mag length to shoulder 2.26
my casting " " 2.33
.358 STA " " 2.43
35 ackley imp mag length to shoulder 2.26
my casting " " 2.33
.358 STA " " 2.43
powell&hyde
Member
Steven Mace
Member
waverace, your dimensions sure seem like you have a .350 Mashburn Super Magnum cartridge.
Steve
Steve
powell&hyde
Member
The 350 Mashburn SM has a shoulder dia of .475".
Thanks for the scan , yeah its all so close , if the scan picture is accurate mine seems to have a sharper shoulder almost like a gibbs style I think I am going to have to find some way of making a cartridge that fits which I think the ai will ,and fire form it ,then send the cases to someone to get a custom set of dies made , this is gonna be an expensive way to do things though , the ai dies are 150 bucks and a custom die is probably gonna run me the same or more also none of that brass is cheap ... the things we do for love lol 
Just as an interesting note , as I mentioned this rifle is based on a 1917 enfield action apart from the ears being ground off to make a scope base there are no other alterations the reciever still has all the factory tooling marks from the reciever manufacture , I own several p14 and no4 enfields so I know what a "factory grade " reciever looks like , the work to grind off the ears is much finer . Now the interesting thing is there is no serial number anywhere else on the rifle and nowhere to show that it had been ground off , now i know that the one on top front of the reciever is where was ground off for the scope base profile , but no number on the bolt , trigger guard , barrel ? kinda wierd so now I hear you say "ah but the barrel is aftermarket" well is it ? on the left side of the reciever is as I would expect a flaming bomb arsenal stamp but also on the end of the barrel just behind the front sight slot is first a "W" makes me think winchester then a flaming bomb then what looks like "I-18" tried to take a picture but its so shallow it didnt really come out , now I dont personally know of any military rifles that were ever chambered in a .35 caliber round , colonel whelen had the idea for the .35 whelan which was realised by howe of griffin and howe who then went on to make the 350 g&h magnum .
I am pretty sure from the other stamps "vp" in a circle "35" right by another "vp" and the "35 Mag." all in the same font as well as the overall patina which matches the rifle more of a brown blue than a blue blue that the barrel is if not original to the action then it is the same era , the mag box has been welded with straight side plates to accept the bigger round also the front part of the trigger guard has been extended also for the bigger round its all a mystery , to get the juices flowing it is wonderful to imagine that this was some kind of early military sniper project maybe ran by colonel whelan himself although I doubt it , Im thinking that it is probably a gunsmith that made his own tooling and made something that resembled the ackley AI and then probably made his own dies to go with it , But I dont know and I probably never will , most people from that era are now passed on and without some hard documented evidence it will never come to light.
I am pretty sure from the other stamps "vp" in a circle "35" right by another "vp" and the "35 Mag." all in the same font as well as the overall patina which matches the rifle more of a brown blue than a blue blue that the barrel is if not original to the action then it is the same era , the mag box has been welded with straight side plates to accept the bigger round also the front part of the trigger guard has been extended also for the bigger round its all a mystery , to get the juices flowing it is wonderful to imagine that this was some kind of early military sniper project maybe ran by colonel whelan himself although I doubt it , Im thinking that it is probably a gunsmith that made his own tooling and made something that resembled the ackley AI and then probably made his own dies to go with it , But I dont know and I probably never will , most people from that era are now passed on and without some hard documented evidence it will never come to light.
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powell&hyde
Member
Interesting, the "W" is Winchester and the "vp" stamp is what winchester used when the rifle was viewed proofed. This meant the gun had been visually inspected as well as gauged and had been proof fired. Does this rifle have a butt-plate? Sometimes they put the serial or assembly number under the butt-plate. I also never heard of the military using 35 caliber rifles.
So heres the latest , I pulled the bullet and emptied the powder on a couple of the STA rounds and using the camming action of the bolt "chamber formed" a couple of the rounds , then I reloaded them I will hopefully get a chance to fire them later today , but first my friend and I are off to the gun show today so I will ask around there and see if anyone recognises it or has any other ideas .the picture shows the original STA plus the newly formed 35 mag. case .
Also I wrote to RCBS asking about the dimensions on their 350 AI magnum improved dies and they wouldnt give me the info but said that if I sent them 5 fired cases or the chamber cast that they would make sure the dies worked .
Also I wrote to RCBS asking about the dimensions on their 350 AI magnum improved dies and they wouldnt give me the info but said that if I sent them 5 fired cases or the chamber cast that they would make sure the dies worked .
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powell&hyde
Member
Looking at the pics says the case on the right is looking more like a AI chamber due to the sharp angle.
I agree so I will probably go ahead and get the AI dies no one at the gun show had a clue today but I did buy some 340 weatherby magnum cases to use as parent cases they are almost identical apart from the bullet diameter if weatherby had made a 358 magnum this is how it would have looked so just need the dies to size up the neck , also shot the two rounds I made up today , not so fearsome as I thought it would be , actually kind of fun to shoot .
so on doing some more research found another newer cartridge called the 358-378 rg (real guns) which is pretty close also in the 40s a company called the hollywood gun shop made a 358-378 weatherby magnum which was very similar but had sharper shoulders this one sounds like it would fit the bill perfectly if anyone can help me find some info on it , cant find anything yet other than a wiki reference .
powell&hyde
Member
I found a couple of links that may help you.
http://www.realguns.com/Commentary/comar31.htm
http://www.realguns.com/loads/358378.htm
http://www.realguns.com/Commentary/comar31.htm
http://www.realguns.com/loads/358378.htm
Yes indeed thats where my latest round of thinking came from but thank you for that, I need to do some more measuring to be sure and I've already sent an email to ch4d to enquire about custom dies they already have the RG dies in stock but they should be able to make just about anything.
update
Well I still dont have a definitive answer as to what the official title of my cartridge is but I did find another rifle for sale advertised as a 35/340 weatherby magnum which for all purposes fits the description seeing as I've been making my rounds now from the 340 weatherby cases , I tried to get a hold of the buyer and the seller but no luck yet . also found another post on greybeards forum of a guy that found a 35mag on a springfield action so I'm joining over there to see if I can learn more about that one .
As to my rifle , I have now made a few rounds out of 340 weatherby brass as I've said , I necked them up using a tapered expander in my 45/70 die then neck tensioned them in my 9mm die before loading and seating with a 45/70 seater die a roundabout route but it works , started out with low 358 norma magnum loads and have worked up slowly from there to a point where I now need a new scope with a longer eye relief , yes its begining to kick
, accuracy has been mediocre so far 4 inches at 100 yds but a lot of that is me not being able to get right down behind the scope and flinching each shot :banghead:, this will hopefully improve once I have the new scope on and I am not so concerned about breaking my eye socket , as for power ,on metal gongs at my range its making them swing good where a .308 doesnt even make them budge so I am inclined to think that they are hitting hard .
Well I still dont have a definitive answer as to what the official title of my cartridge is but I did find another rifle for sale advertised as a 35/340 weatherby magnum which for all purposes fits the description seeing as I've been making my rounds now from the 340 weatherby cases , I tried to get a hold of the buyer and the seller but no luck yet . also found another post on greybeards forum of a guy that found a 35mag on a springfield action so I'm joining over there to see if I can learn more about that one .
As to my rifle , I have now made a few rounds out of 340 weatherby brass as I've said , I necked them up using a tapered expander in my 45/70 die then neck tensioned them in my 9mm die before loading and seating with a 45/70 seater die a roundabout route but it works , started out with low 358 norma magnum loads and have worked up slowly from there to a point where I now need a new scope with a longer eye relief , yes its begining to kick
, accuracy has been mediocre so far 4 inches at 100 yds but a lot of that is me not being able to get right down behind the scope and flinching each shot :banghead:, this will hopefully improve once I have the new scope on and I am not so concerned about breaking my eye socket , as for power ,on metal gongs at my range its making them swing good where a .308 doesnt even make them budge so I am inclined to think that they are hitting hard .Jim Watson
Member
Once upon a time there was not the availability of barrel blanks that there is now.
Reboring was less expensive, relative to the cost of a new barrel, than it is now.
Now if you want a rebore to something odd or to preserve original markings, it will cost a good deal of money, so is not as common.
Reboring was less expensive, relative to the cost of a new barrel, than it is now.
Now if you want a rebore to something odd or to preserve original markings, it will cost a good deal of money, so is not as common.
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