Go with kudu3's offer as anything other than the Zastava could be difficult to find. A Model 70 or CZ 375 could be re-bored to the lott and the size and weight of both of those rifles is better suited to a 45 than a 375.

"When you disarm the people, you commence to offend them and show that you distrust them either through cowardice or lack of confidence, and both of these opinions generate hatred." Niccolo Machiavelli