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Cartridge case identification please.
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Goosic View Drop Down
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    Posted: January 17 2024 at 7:59pm
I have 220 cartridge cases that have 303 BRIT stamped on them and that is it. The rim thickness is 0.0605" on all of them so there's that.
Has anyone a clue as to who the manufacturer is?...
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Sapper740 View Drop Down
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I have a bunch of the same brass which I have searched for the manufacturer too.  I visited many websites which are aware of this brass but no one has any idea where it came from.  Apparently it generally comes pre-primed with a green anullar ring.
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Goosic View Drop Down
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Sapper 740. This is what I just learned.  These cartridge cases were made by IVI in Canada.  They were loaded with 150grn SP projectiles in the early 80's and intended for use by the Canadian Rangers...
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IVI is/was Industries Valcartier Inc.
General Dynamics Ordnance and Tactical Systems-Canada Inc. was formed as a result of two(gov`t take over) purchases: the first, in 1980, Industries Valcartier Inc. (IVI), a small caliber ammunition plant; and the second, in 1986, Canadian Arsenals Ltd. (CAL)
All Canadian company for military contract ammo only. I tried to get them to do a run of 10,000 rounds of 174gr ball 303 a couple years ago and Their response was a simple an resounding NOPE!! 

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Sapper740 View Drop Down
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Points: 1737 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Sapper740 Quote  Post ReplyReply Direct Link To This Post Posted: January 18 2024 at 1:56pm
You know, I had a fading memory of seeing that font and no manufacturer back in Canada years ago when I lived there.  
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shiloh View Drop Down
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When i was in the Canadian army All our ammo was IVI/date head stamped.
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I’ve got some IVI Mk 8z.  Shoots fairly decent. A bit warm I’d say, I think MV was close to 2500 fps. 
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Goosic View Drop Down
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.
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Goosic View Drop Down
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I have 45 unused, never loaded cases. They now have 37.5grns/2.43g of IMR3031 in them and are primed with Federal GM215M primers. They are loaded with the 170grn/11.1g FMJ-BT .312" projectiles and seated to a C.O.L. of 3.085". I am anticipating a MV of near 2400 FPS with a flatter trajectory than that of the 174grn HPBT projectiles...
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Definitely not "British" made, they had a purple primer seal.
Don't shoot till you see the whites of their thighs. (Unofficial motto of the Royal Air Force)
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I have no idea what happened here, my apologies?
Somehow your post & mine are merged & I can't separate them?
Don't shoot till you see the whites of their thighs. (Unofficial motto of the Royal Air Force)
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Originally posted by Goosic Goosic wrote:

Originally posted by britrifles britrifles wrote:

I’ve got some IVI Mk 8z.  Shoots fairly decent. A bit warm I’d say, I think MV was close to 2500 fps. 
Originally posted by britrifles </div><t></t><table =tableborder= align=center cellspacing=1 cellpadding=3 style=width: 352.797px; color: rgb0, 0, 0; font-size: 19px; table-layout: fixed;><t><tr><td valign=top =msgoddtabletop=>February 06 2018 at 5:19pm<span style=: right;> <img src=https://www.enfield-rifles.com/forum_images/quote.png border=0 alt=Quote&amp;nbsp;britrifles title=Quote&amp;nbsp;britrifles /> <a href=https://www.enfield-rifles.com/new_reply_form.asp?Quote=1&PID=93380&PN=1&TR=16 target=_blank rel=nofollow>Quote</a>  <img src=https://www.enfield-rifles.com/forum_images/reply.png border=0 alt=Post Reply title=Post Reply /> <a href=https://www.enfield-rifles.com/new_reply_form.asp?PID=93380&PN=1&TR=16 target=_blank rel=nofollow>Reply</a></span></td></tr><tr =msgoddtablerow=><td valign=top =msglinedevider=><div =msg= style=width: 342.797px;>Checked my notes, 10 rounds of IVI ‘04 MK VIIIz chrono’ed at MV=2484, ES=43 and SD=11.6 from my LB No.4 (.3035 bore/.315 groove dia.). Temp was 60 deg F. Shooting Chrony Alpha Master 15 feet from muzzle.<br><br>That same day, 10 rounds of DAC ’56 VIIz chrono’ed at MV=2403,ES=54, SD=21.<br><br>174 gr SMK over 42.5 gr Re 15 Reloads chrono’ed at MV=2550, ES=60, SD=19.<br><br>I’ve since dropped my 174 gr SMK Match loads to 40.0 gr Re 15.</td></tr></table></div></td></tr></t></table>[/QUOTE britrifles 
February 06 2018 at 5:19pm Quote&amp;nbsp;britrifles Quote  Post Reply
Checked my notes, 10 rounds of IVI ‘04 MK VIIIz chrono’ed at MV=2484, ES=43 and SD=11.6 from my LB No.4 (.3035 bore/.315 groove dia.). Temp was 60 deg F. Shooting Chrony Alpha Master 15 feet from muzzle.

That same day, 10 rounds of DAC ’56 VIIz chrono’ed at MV=2403,ES=54, SD=21.

174 gr SMK over 42.5 gr Re 15 Reloads chrono’ed at MV=2550, ES=60, SD=19.

I’ve since dropped my 174 gr SMK Match loads to 40.0 gr Re 15.
[/QUOTE wrote:


Well, there you go, my memory is better than I thought. 

I did stop using Re15 some years ago when I found out it’s a double based powder. Been using 40.0 grains of Varget for a while now…


Well, there you go, my memory is better than I thought. 

I did stop using Re15 some years ago when I found out it’s a double based powder. Been using 40.0 grains of Varget for a while now…
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shiloh View Drop Down
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Originally posted by Shamu Shamu wrote:

Definitely not "British" made, they had a purple primer seal.


Nope I.V.I. is a Canadian product.
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Mayhem View Drop Down
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These are seen with both red and green primer anulus seals.

These were originally produced by CIL, who used red sealant.  When CIL was bought by IVI, they continued production using the same bunter but changing to green sealant, to indicate IVI production.  The concave head is a distinguishing feature.
.303 - Helping Englishmen express their feelings since 1889
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