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Steel Proof?


ciaran
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All nitro proofed guns can use standard steel (not high performance) so long as the shot size is not larger than no.4 and 1/2 choke or less is used. 32g of any no.4 steel (hull steel game, gamebore game and wet steel etc) will be ok to use on duck for example.

 

The 390/391 are not proofed for High performance steel.

Edited by Wildfowler12
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I stand corrected :good:

 

I spoke to BASC about this a couple of weeks back, there advice was shot up to size no.4 should be used with 1/2 choke, size no.3 or larger should be used with a maximum of 1/4 choke, partly because the patterns are better at this choke restriction but mainly because of risk of damage to chokes. It states this on most High Performance steel cartridge boxes. (There are certain exceptions as some manufactures make super hardened chokes that can tolerate the larger shot sizes).

Edited by Wildfowler12
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I don't know about every model, but I know most of the older are only proof tested to 900bar. I asked GMK when I was considering an AL391 and they confirmed it.

 

I thought they all were untill I looked over a mates Urika and could not find the proof marks.

 

Seems its just the Xtrema2 that was.

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WWildfowler 12,

 

Confusing ain`t it. I think what I`ve put is correct but it depends on the context. Have a read of the BASC Steel Shot Information sheet on their website and tell me if I`ve got it right.

Yeah very confusing, It took me a good few weeks to get my head around it. The problem is that alot of the RFD's don't understand it properly either, and often tell people the wrong information.

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From BASC: Standard Steel shot cannot be larger than 3.25mm i.e. English no.3, but can be used through any choke. There is no limit on shot size in High Performance Steel cartridges but if it is greater than 4.0mm (i.e. English BB or larger) then choke less than half should be used.

 

Mudpatten: Looks like you're right! They reccomend that 1/2 choke or less is used due to pattern formation, but according to the above, any choke can be used if the shot is 4 or smaller. I will stick to 1/4 choke though, that's all I use in my benelli.

Edited by Wildfowler12
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Yeah very confusing, It took me a good few weeks to get my head around it. The problem is that alot of the RFD's don't understand it properly either, and often tell people the wrong information.

 

Just to add to the pool of information, this is what the Gamebore website says..

 

12G Game and Wetland Steel

The high velocity Game and Wetland Steel is suitable for use in standard 2 3/4" chambered guns

in shot sizes 4 and 5 only. The larger size shot 3 should only be used in high performance steel shot proofed guns with barrels and chokes designed for steel loads.

 

A couple of years ago I was sold a box of size 3 by an RFD (as being Ok for non steel proofed gun) and it had a leaflet inside the box with a similar statement.

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With regards to the AL391 urika I bought it thinking it was steel proofed but I can't find the mark on the action or barrel. I have been putting lyvale max game steel 3" 36 gram number 3's and 4's through it without any problems. As I understood it these are a High Performance steel load.

On further inspection the barrel says 950kg and the box states the shells should not be used in anything less than 1350 bar. And to make matters even more confusing all my chokes even the 3/4 and full have an 'SP' after them which as far as I was aware meant they were steel proof.

 

So why is this?

Surely the barrel should be able to cope with a 36 gram load of HP steel if it is Magnum proofed and can handle 57gram lead loads?

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