Steel shot in a Browning Auto 5

M39MosinGoose

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How safe would it be to use steel shot in a Belgian made 12 gauge 3" barrel with a Briley S-1. 705 steel choke. Main usage will be waterfowl.
 
How safe would it be to use steel shot in a Belgian made 12 gauge 3" barrel with a Briley S-1. 705 steel choke. Main usage will be waterfowl.
I would contact Briley and ask them.
The gun itself will handle the shotshell, the thin wall tube is what I question.
Shoot the appropriate loads for ducks and 'should' not be an issue.
I have never used Briley let alone shot through thin wall tubes...
Rob
 
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Check with Briley for sure. A .705 is almost a FULL choke with lead shot so probably too tight for steel. Personally anything tighter than about .715 would be risky with steel loads in thin wall chokes but Briley will give you the info you need.
 
Belgian A-5's have nominal bores of .725" compared to NA standard .730" which makes for crappy performance when using steel shot.
Many nice old Belgian A-5's have suffered barrel damage from steel shot use.
 
Briley would give you the scoop but IMHO .705 is a F choke and to tight for steel, .715 - .725 would be much better, my Beretta Optima HP chokes in IM .710 and F .705 are stamped " NO STEEL " the M choke .715 is stamped " OK STEEL " as are the IC .720 and C .730 chokes
 
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Please heed this ^^^^^^ advice ^^^^
Personally, I also wouldn't do it !! They were designed for "squishable lead shot"...steel shot don't squish, but it WILL fak up your barrel on that nice old shotty !
 
What will happen with the thin wall is the male threads will seize in the female and become so deformed you will not be able to remove the chokes I have seen this with many thin wall chokes not just brielys
 
Belgian A-5's have nominal bores of .725" compared to NA standard .730" which makes for crappy performance when using steel shot.
Many nice old Belgian A-5's have suffered barrel damage from steel shot use.
This is relevant, I think - so way back in the day when "non-toxic" shot became a requirement for waterfowl in Canada, I looked into the issue - and I may have got it muddled up today. But, I think "choke" is a restriction - a reduction in diameter - is not an absolute fixed dimension - and many shotgun barrel makers decide they will make their bores to their own unique diameter - not all are the same - for sure, not one brand maker to another - have to measure to know what the bore size actually is, in your barrel. Then, a "choke" is a reduction from that diameter. So, for example, you can have a nominal 12 gauge bore that measures 0.730" or 0.725" or some other diameter - the same diameter restriction (the same item) screwed into either barrel will give different constrictions - should result in different patterns, or at least "level of choking". So, a "choke device" that created 0.005" constriction from the bore diameter, could be several different sizes, since the bores tend to all be different sizes. Actual measuring and patterning and counting shot pellet holes on target is required to know - versus what the "made-in-China" package says it is. I believe that I read that choke "count" or choke "name" actually refers to the percentage of shot that lands in a 30" diameter circle at 40 yards - for example, I think it is 70% of the shot fired is called "full choke" - is NOT a dimension that you can measure and therefore "know" what it is.
 
Browning states that Japanese-made Auto-5 barrels with suitable Invector chokes are approved for steel shot.
If you intend to shoot steel shot ammo, obtain a Miroku made Invector choke barrel.
 
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