.509? Wow, that would not be good for my Presidio. Mine slugged out at .513, I cast at .515. Most definitely you'd need to slug your bore.

I realize this thread is almost 4 years old from OP, but I just bought a brand new 24" blued .357 and they were also offering in other calibers, and in SS.

Looking over my current "herd" of WB magazines a few days ago, I find 4 Metalform -welded base plate. I've been using them for 6-7 years with no troubles. However, one looked a bit mis-shaped on the "welded" floorplate. I see one weld looks a bit weak/cracked. That's no good - Moved it to the "parts/repair" box. I see the other 3 have a similar looking weak weld, but are still holding tight. I pulled 2 old mags from the box -of which the bases can be removed (and can do so - unexpectedly - when inserting) Got out my 6-32 tap & threaded the hole in the inner tab & installed a screw to snug it all tight - very solid now, but have yet to test them.

Seeing a possible shortcoming in serviceable mags, I put some MecGar mags on order. So, I'll see how they're constructed one of these days. Meanwhile I'm cutting some leather base pads.

I try not to drop empty (worse loaded😲) mags onto a hard surface - wooden deck, concrete 😳 I know that's bad news. I recall a couple mishaps like that in the past couple years. Note to self - don't drop them.

Regards,
Slim

This is a good choice, especially if you are going to do some CAS matches. 5.5 balances well and is easy to move quickly from target to target. 8" is the coolest looking and fun to shoot but for a match, maybe not quite as quick. Shorter is great for maneuverability and speed on the clock but (my personal opinion, here, and probably just my childhood Western movie indoctrination showing through) they loose something aesthetically. At CAS distances, any length is accurate enough.

Looking forward to seeing what you get. AND seeing the leather you make for them.

Thanks Marshal. You know I will be making something for them to ride in once I ever get a pair.

That is a nice looking 1875.  I have a pair that I use for CAS.