As far as ammo to feed it, I can bet over the years, since 1922, this old Trojan has had a lot of 2 3/4" shells through it without a hic-cup or concern, especially before the "forum days" where you are now told to be "careful". But, I guess the proper answer would be to have your gun checked out by a competent SxS gunsmith and measure the chambers. If I took your Trojan to the gunsmith near my house, who is probably 35 years old, and told him it was made in 1922, he would most likely tell me to put it above my fireplace or sell it and buy a semi-auto.
Bill
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