Valmet 412 Shotgun Chambering

[sae8425]

Well, I almost bought that one on Gun Broker with two barrels!

However, when I found out it was only chambered for 2-3/4" shells I decided not to.

So; were all the 412's (combo barrels especially) only available in 2-3/4" chambers?

I've trolled around on Google but I can't find a definitive answer.

If so, is it at all possible to have a 412 converted to a 3" chamber?

Many thanks to all for the continued advice.

Best regards,

Steve

[dougk]

Steve,
I have used 3 inch shells on all my Valmet 412 shot gun barrels.

What were the markings on the 412 shotgun barrel?

[sae8425]

dougk,

I don't know.

I asked the seller what ALL the shotgun chambers were (given that there was an O/U shotgun barrel & a rifle/shotgun barrel).

They replied that it was chambered for 2-3/4".

Perhaps they made a mistake?

Many thanks,

Steve

[Jone]

So; were all the 412's (combo barrels especially) only available in 2-3/4" chambers?

No.

3" chambers are as common as 2-3/4", at least in Europe.

[Drilling Man]

  The truth is, all EARLY combo bbls were 70mm (2-3/4") and all LATER bbls were 76mm (3").  You can lenghten any 70mm to 76mm with out any problems with the bbls. or action...

  DM

[sae8425]

Drilling man,

Thank you very much for providing that bit of information.

If only I had known sooner (isn't that often the lament).

Oh well; back to the search.

Best regards,

Steve