Free: Contests & Raffles.
The Model 12 is more likely than not S, L, LR. They made Model 12 gallery guns chambered in S only though. CCI SV 22 LR is what I would shoot in it. The Remington looks to me to be a Model 4, I’m not an expert on rollers, but believe the Model 6 (a tiny little gun) was also available. The Model 4 is a fairly robust rifle, but I’d favor shooting SV ammo in it as well. Hopefully the bore in them is in good shape. If it looks bad on any it may still shoot surprisingly well… or not. With CB loads, make sure the bullet makes it out of the barrel and isn’t stuck in the barrel on each shot before shooting another round.
I love old 22's, those are very cool
Those are all solid rifles that you will be glad you put some effort into. The Mossberg 151M it would be a good idea to stay with SV ammo, if you are not already. They can be tricky to reassemble correctly. Detailed disassembly and reassembly instructions are in this thread on RFC. https://www.rimfirecentral.com/threads/my-new-rifle-old-mossberg-151m-info-needed.1272612/When I come across information like that I print it out and file it for future reference. It may come in handy someday and things online can end up disappearing into a black hole when you really need them.
Thank you for the complements. I kinda, sorta stumbled across a Second Model 1890, that caught my eye. I called about it and likely would have gone for it anyway, but inquired about the bore. The guy hadn’t looked at it, when he did probably thought that it was going to be sitting there for months and months. My inclination was he was glad to have me still interested. One thing lead to another and long story short is I ended up with it and a Winchester Model 61 and a Marlin 39a by the time all was said and done. The latter two didn’t need much, but the 1890 needed a barrel liner. I didn’t go into great detail, but I did post about how I do barrel liners. https://www.rimfirecentral.com/threads/i%E2%80%99m-feeling-pretty-good-about-this-model-61-model-90-model-39a-w-lyman-receiver-site.1317933/I post about my projects mostly at RFC because I have ran out of my allotted server space other places for the photos. Maybe I’ll post a real project here if/when I have something that is in need of a comprehensive overhaul. That way if someone is interested in any aspect it should be covered. Stock repairs -vs- fitting a 90-95% stock set would be the exception. It would be either one or the other. But both would need finishing. Any real basket case is going to need everything. I’ll keep my eyes open and see if something doesn’t turn up. I’m always up for doing an 1890, 1906 or 62a. A Marlin 1891 or any of its descendants would work. A 44 Stevens or 1885 Winchester maybe, but I’d have to be talked into a Model 44 and even a thoroughly trashed 1885 costs real money. Maybe I’ll stumble across a Model 6 Remington roller.