As the number 3 indicates,your Winchester model 42 can chamber either 2 1/2in,or 3 inch 410 shotgun shells.
No, it is/was not.
Yes as long as you get one made for the Winchester model 1300 and chambered for the same length of shotgun shell that the receiver is chambered for.
With the serial number that you have provided,your Winchester model 1912 pump action shotgun was made in the year 1916.You should be aware that all Winchester model 12 shotguns chambered in 20 gauge from 1912-1927 were chambered in the 2 1/2 inch length,not the present day chambering for 2 3/4in shells.
2 3/4" or 3" shells only
The only Winchester chambered in 45-60 was the Winchester model 1876 rifle.
at least 10000
It would depend on the magazine length, (full or half) and what caliber the gun was chambered for.
How many Winchester model 70 classic sporters were chambered in 300 rum?Read more: How_many_Winchester_model_70_classic_sporters_were_chambered_in_300_rum
Your winchester model 12 shotgun in 20ga was made in 1913.I should point out that the chamber of your 20ga shotgun is 2 1/2in.The winchester model 12 in 20ga was chambered in 2 1/2in until 1927.So caution is advised when shooting your shotgun!Do not attempt any modern day shotgun shells that have a length of 2 3/4in.
I'm not 100% positive. I do know it has to be chambered for such. My M-12 shoots 2-3/4.
The Winchester model 1894 rifle was never chambered in the 30-06 caliber.
Your winchester model 70 chambered in .308 Win.is a short action.