I doubt the 22 mag .224 bullets care much about the slightly smaller bore on a 53 any more than they do when people to it with lots other 22 revolvers. It hits the forcing cone and instantly becomes bore size. People regularly fire 454 and larger bullets into 452 bores on 45 colts to get accuracy on those with large cylinder throats. The rim thing is also unimportant. The case centers so the 22 mag rim is only .008 farther out from center. The rim is .026 from the case wall so the firing pin will smash plenty it.
Model 53 22 cylinders are rarer and hard to come by. I have picked up an early recessed model 19 cylinder which is the same length. When I work through some of my other projects I plan to ream the chambers to 25/64 (0.3906). Turn some 4140 round stock to 0.391 with a reamed 0.222 bore. Then shrink fit a section of round stock in each chamber, then face them of in my lathe to flush. On the back side I will have to turn the inset for the extractor. Fit a K22 extractor I have to it. Then run a 22 lr reamer in each new chamber. A home made model 53 cylinder. Not cost effective but, to me its interesting.
Once I get my thumb hole stock 6.5 Creedmoore, my 2nd 325 converted to 45 colt and a couple other projects done. I will get to it someday. I also want to make a receiver that a S&W 45 colt cylinder fits in and see how much it takes to blow the cylinder up. So many guns. I spend to much time on here too. LOL
Model 53 22 cylinders are rarer and hard to come by. I have picked up an early recessed model 19 cylinder which is the same length. When I work through some of my other projects I plan to ream the chambers to 25/64 (0.3906). Turn some 4140 round stock to 0.391 with a reamed 0.222 bore. Then shrink fit a section of round stock in each chamber, then face them of in my lathe to flush. On the back side I will have to turn the inset for the extractor. Fit a K22 extractor I have to it. Then run a 22 lr reamer in each new chamber. A home made model 53 cylinder. Not cost effective but, to me its interesting.
Once I get my thumb hole stock 6.5 Creedmoore, my 2nd 325 converted to 45 colt and a couple other projects done. I will get to it someday. I also want to make a receiver that a S&W 45 colt cylinder fits in and see how much it takes to blow the cylinder up. So many guns. I spend to much time on here too. LOL
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