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Irish Blonde View Drop Down
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    Posted: December 08 2025 at 6:18am
Getting the Irish Blonde No4MK2 contract rifle ready for hog hunting. Loaded up some 150gr Barnes TSX in Win cases. (I have Win and Rem only) The Winchester cases ejected out the gun just fine, but I discovered my Remington cases would extract, but not eject. Just lay on top of the round in the mag. 

Came home to measure the rims. Winchester were thicker by .003". I guess this was the deal maker & breaker of the ejection situation. 

This does come after mounting the no drill scope mount, but as I understand it, the ejection of an empty case is done via the indent in the receiver, and the ejection of a loaded case via a slight protrusion of the ejector screw/bolt. I got this right? I just wonder why the Remingtons ejected before and not now. The ejector bolt is no longer protruding at the rear with the scope mount. Maybe the Rems were needing that ejector bolt assist? 

ETA: Just found this from another forum. Seems I found the same .003" difference between Win and Rem:
Rating .303 British cases by manufacturer for critical specs. These are the average from 5 sample cases.

The tests produced a bit of interesting myth busting again (“Thinner than normal” American made cases & "thinner rimmed" cases from Rem. & Win.), & a couple of inconstancies. I expected case weights to be the exact inverse of case volumes, but it wasn’t so. This may be in part to my attempt to get volumes by water as the meniscus was more variable than I expected so I wouldn’t be as concerned with the volume results as I would with the weight, rim thickness & variations in those 3 areas.

Case weight.
Remington lightest @ (161.04 GR).
Win 2Nd. @ (168.0).
S&B 3Rd. @ (180.62).
PPU 4th. @ (182.38).
HXP Heaviest. @ (184.62).

Case volume of water.*see disclaimer above about variability in the meniscus*
Win smallest @ 53.28 Gr.
HXP 2Nd. @ 53.78 Gr.
Rem 3Rd. @ 54.6 Gr.
PPU 4th. @ 55.54 Gr.
S&B largest @ 55.95 Gr.

Rim thickness. **Measured at 3 points around the circumference & averaged per case for 5 cases**
S&B Thinnest with 0.0555”.
Rem 2Nd. With 0.0586”.
HXP 3Rd. with 0.0600”.
Win 4Th. With 0.0607”.
PPU Thickest With 0.0608”.

Case to case variations.
Weight:
Win lowest @ 0.4 GR.
Rem next @ 1.5 Gr.
PPU 3Rd with 4.1 GR.
HXP 4 Th. With 11.3 Gr.
S&B last with a whopping 18.3 Gr.

Volume:
HXP lowest with 1.2 Gr.
Rem 2Nd at 1.8 Gr.
Win 3Rd. at 2.7 Gr.
PPU 4Th. At 3.1 Gr.
S&B highest @ 3.9 Gr.

Rim thickness variation.
PPU, Win & Rem in a dead heat for least variation @ 0.0030” between.
HXP 2Nd at 0.0045”
S&B 3Rd. with 0.0050”.
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britrifles View Drop Down
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You are correct about how the empty cases eject, the rim is dragged along the left side of the action body boltway as the bolt is pulled back.  Friction flips them out.  

Weak or no ejection is usually caused from a weak extractor spring, that is what pushes the case to the left side of the body.  You could try changing the spring. 

Check the diameter of the rim and the diameter of the case body just in front of the rim on these two different cases.  It's possible the Remington cases are a bit smaller here and result in less contact pressure from the extractor.  

The ejector screw is indeed needed to eject a loaded round.  It's possible it might be an aid to eject an empty case should it not flip out from the friction force of the rim dragging on the action. 

Rim thickness is what affects the "head clearance"; that is the space between the bolt face when locked and the back of the cartridge case.  If you reload, you want this clearance to be small to minimize how much the case stretches on firing.  
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Originally posted by britrifles britrifles wrote:

You are correct about how the empty cases eject, the rim is dragged along the left side of the action body boltway as the bolt is pulled back.  Friction flips them out.  

Weak or no ejection is usually caused from a weak extractor spring, that is what pushes the case to the left side of the body.  You could try changing the spring. 

Check the diameter of the rim and the diameter of the case body just in front of the rim on these two different cases.  It's possible the Remington cases are a bit smaller here and result in less contact pressure from the extractor.  

The ejector screw is indeed needed to eject a loaded round.  It's possible it might be an aid to eject an empty case should it not flip out from the friction force of the rim dragging on the action. 

Rim thickness is what affects the "head clearance"; that is the space between the bolt face when locked and the back of the cartridge case.  If you reload, you want this clearance to be small to minimize how much the case stretches on firing.  

From feel of the extractor the spring is stout. 
I measured .450 & .451 between the two cases just under the rim. Forgot to measure the OD. 
For some reason, they all don't eject now. LOL! 
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Is the inner side of the receiver dry? Or is there some lube on it? 
It needs friction to get the empty case ejected, plus it should be a quick pull back on the bolt.
If slow, it won't eject until it hits the screw.
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Originally posted by Zed Zed wrote:

Is the inner side of the receiver dry? Or is there some lube on it? 
It needs friction to get the empty case ejected, plus it should be a quick pull back on the bolt.
If slow, it won't eject until it hits the screw.

Oh I bet it's got some grease on it. 
At the moment, quick bolt speed doesn't eject either. 
I'll try to JB weld a nub on the end of the screw. 
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The extractor spring might "feel stout" but they weaken over time and fitting a new spring has always solved this for me.  Remove the bolt, slip an empty case under the extractor, and push the case against the extractor so the rim is flush with the bolt.  It should take a very firm push.  

Excess grease/oil could also be the problem.  
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Case rim OD .530 on both brass brands. 
Extractor spring is stiff as per test instructions. 
All grease removed.

Still doesn’t eject a spent case. 
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Has it ever?
I ask because there's a same threaded screw used elsewhere but it lacks the "nub" which pops the Un-Fired case out.
Oddball Enfield feature the ejector doesn't eject fired she!!s! Just un-fired ones!
Are you testing with fired cases of action proving dummies?
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Originally posted by Shamu Shamu wrote:

Has it ever?
I ask because there's a same threaded screw used elsewhere but it lacks the "nub" which pops the Un-Fired case out.
Oddball Enfield feature the ejector doesn't eject fired she!!s! Just un-fired ones!
Are you testing with fired cases of action proving dummies?

Yeah, no problems till I put this dam scope mount on. Thing is I can't use irons anymore. Gotta have a scope. 

I'm firing my handloads, and using that fired brass also to test the ejection. 

On a positive and separate note, I did measure my bolt and have .630" bolt head and .0015" headspace gap. The weird thing is the bolt head is a #3 but with #2 size bolt head length. 
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Is the brass hitting the scope mount?  Seen ejection impeded by aftermarket mounts….
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No Sir. 
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Originally posted by Irish Blonde Irish Blonde wrote:

Case rim OD .530 on both brass brands. 
Extractor spring is stiff as per test instructions. 
All grease removed.

Still doesn’t eject a spent case. 

How far does the case rim overhang the left side of the bolt head with the bolt removed and right side of case rim just contacting the extractor? 

We are missing something here….
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Originally posted by britrifles britrifles wrote:

Originally posted by Irish Blonde Irish Blonde wrote:

Case rim OD .530 on both brass brands. 
Extractor spring is stiff as per test instructions. 
All grease removed.

Still doesn’t eject a spent case. 

How far does the case rim overhang the left side of the bolt head with the bolt removed and right side of case rim just contacting the extractor? 

We are missing something here….

Tried to upload a pic, but no joy. 
I measured with calipers .050 overhang
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Well, OP said in the first post that the ejector screw no longer protrudes into the action.  Some scope mounts come with different ejector screw lengths so you can trim to the right length (BadAce comes with 3 different lengths, for example).  

Does a spent case even begin to angle itself out?  

Does a spent case try to hit the scope mount?
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Originally posted by DisasterDog DisasterDog wrote:

Well, OP said in the first post that the ejector screw no longer protrudes into the action.  Some scope mounts come with different ejector screw lengths so you can trim to the right length (BadAce comes with 3 different lengths, for example).  

Does a spent case even begin to angle itself out?  

Does a spent case try to hit the scope mount?

The cases angle to the right upon rear travel but there’s no flip out the side. Just backwards and lay on the follower. Case mouth facing shooter.
Totally clear of the scope mount. 
I only got two screws with BadAce and I cut too much off the longer one. 

300-400rnds on 1954 No4MK2 new in wrapper. 
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