Hi i just received my 930 home security and was wondering what the law says about mag tube extensions, is it no more than five rounds of the largest shell , in this case 3" meaning that i could possibly load six 2 3/4" or is the capacity limited to five no matter the size of the shell loaded.
mag tube ext. for a semi
- Thread starter mtlbomber
- Start date
if i'm not mistaken they limit you to 5 rounds of the largest ammo the shotgun was designed to fire, i would say call the CFC but they tend to give bad advice, try the legalese section 
but you have to keep in mind you want about 1/2 inch of empty magazine to insure proper loading
but you have to keep in mind you want about 1/2 inch of empty magazine to insure proper loading
The answer is simple, if the maximum legal limit for a semi-auto shotty is 5-rounds and you are able to load 6-2 3/4" in the magazine of your semi-auto shotgun, what does it tell you? a), Are you still within the legal limit or b).1-shell over the legal limit?
You pick between the 2-choices.
You pick between the 2-choices.
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MauserMike
CGN Ultra frequent flyer
- Location
- SW Ontario
What about 2.5" shells? 
Where is the line drawn?
Where is the line drawn?
The limit is 5 rounds in a semi shotgun at anytime. The CFO, police , whoever cannot put 7 rounds of 2 1/2 inch rounds in your shotgun and say you are in violation ,if they can only get 5 rounds of 3 inch in your 3inch semi shotgun . This doesn't mean that if you can fit 7 or 8 rounds of 2 1/2 inch or smaller shells in your 5 round 3 inch semi shotgun , it is legal to do so.
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Greenhorse six
CGN Ultra frequent flyer
That's 5rds in the mag,right? Some people will think its 4 in the mag and 1 in the breach = the 5rd limit.
So the nay sayers have a target, PICK ME.
Your semi-auto shotgun can not hold more than 5 rounds of the largest shell it's chambered for, evidenced by the data stamp. If it's a 3 inch chamber, than you can not using normal pressure insert 6 rounds into the chamber. Same goes if it's 3.5 inch chambered gun.
If you can load more than 5 rounds of a shorter ammunition, so be it. All that matters is that the magazine can not seat that 6th round of the longest ammo.
One fly in the ointment, and one potential problem if it ever goes to court, is loaded shell lengths can vary.
Your semi-auto shotgun can not hold more than 5 rounds of the largest shell it's chambered for, evidenced by the data stamp. If it's a 3 inch chamber, than you can not using normal pressure insert 6 rounds into the chamber. Same goes if it's 3.5 inch chambered gun.
If you can load more than 5 rounds of a shorter ammunition, so be it. All that matters is that the magazine can not seat that 6th round of the longest ammo.
One fly in the ointment, and one potential problem if it ever goes to court, is loaded shell lengths can vary.
I believe the law is 5 shells including the one in the chamber.
Therefore if the magazine tube currently holds 4-3" shells, you cannot get an extra shell in the tube if you drop to 2 3/4" shells because you only save 1 1/4" of shell length. (5 x .25" = 1.25")
You will not even get an extra shell in if you go all the way to 2 1/2" shells because you only saved 2" of shell length in the process.(5 x .5" = 2.0")
In addition to the issues of law, many autoloading guns will not cycle 2 1/2" shells consistently. Make sure you try them out before you really really need them to work.
Jeff
Therefore if the magazine tube currently holds 4-3" shells, you cannot get an extra shell in the tube if you drop to 2 3/4" shells because you only save 1 1/4" of shell length. (5 x .25" = 1.25")
You will not even get an extra shell in if you go all the way to 2 1/2" shells because you only saved 2" of shell length in the process.(5 x .5" = 2.0")
In addition to the issues of law, many autoloading guns will not cycle 2 1/2" shells consistently. Make sure you try them out before you really really need them to work.
Jeff
Greenhorse six
CGN Ultra frequent flyer
On the CFC web site under FAQ it say "5 in the magazine."
then mags would be pinned to 4 - not 5.
Greenhorse six
CGN Ultra frequent flyer
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Um, not quite.
I'm really interested about the "if it works in another firearm" rule, applied here. The LAR-15 mags hold 10-rounds of 5.56mm and can be used in AR-180B's, etc, b/c they are officially pistol-mags (whcih are legally ok with 10-rounds).
The mag-extensions on tube-fed long guns are perfectly legal when we're discussing pumps; I'd be intrigued to see the discussion about tube-fed semi's with those same extensions. I know the tube-feed will muddy the discussion-waters, but give it a "thinking-through":
you are simply giving your semi the same magazine - for all intents and purposes - that is legal for a pump-gun to have. It is the same magazine.
Just a thought.
I'm pretty sure the law says "designed for". and since most barrels will say '2.75" and 3" ' the gun is designed for both. so you coudln't fit more then 5 of either. if the gun was only labeled 3" and had no mention of 2.75". then maybe you could get away with it.
Folks, download the Firearms Act and read it. It is sometimes hard to understand, but it is worth the exercise. Magazines for centerfire, semi auto rifles and shotguns can hold no more than 5 cartridges of the type they are designed to hold. Scott sums it up pretty well. Don't try short handing the regs, that is where we get rumours from, like all semi autos must have no more than 5 rds in a magazine. That is not the case.
