I’ve never used the 5 shot mags, but both the polymer and the steel 10 shot mags, have worked flawlessly

 

The 5's and 10's worked equally well no matter the size or material for me. RIght now, the 10 round mags are tough to find atm. If you plan to do competitive shooting, you might want to accumulate the 10's.

The magazine well on the 457's are plastic, perhaps polymags would be your preferred choice. However, I haven't worn out a magazine well yet.

 

I prefer the poly 5 rounders. But iv had the steel and the 10 rounders, they al work fine. I think they make a 25 round magazine for the 512 that will fit The 455/457.

 

I have 3-457’s and 1-455 and have both steel and plastic mags both 5 round and 10 round and they all work flawlessly in 4 different rifles.

 

I'm in Canada and I couldn't find any 10s at any online dealers but a LGS nearby had 4x 5s, now they're mine. Makes 7x plastic and 1-metal. I like the plastic 'cause there are No Sharp Edges !!

 

Thx for your comments. As FLZ stated, 10 rd mags seem largely non-existent. That said, I did find both metal and poly 5 and 10 rd mags at CZ-Parts. While I'm not crazy about their prices (plus my guess is I'll get tagged with a Foreign Exchange Fee), I went ahead and placed an order. Since they accept MC/VISA, I'm not risking a whole lot and I need to get my rifle up and running.

Will advise how this works out....

 

I see dozens of magazines on Gunbroker. They average 25 dollars.

 

Gotta admit, I never even checked GB. Nothing against dealers on GB... just not my go to source of supply I guess...

 

I have a mtr and I prefer the poly in a single shot but then again I am benchrest shooting

 

Both of my Varmint MTR's came with the 5 round steel and they're ok but I do prefer the 10 round poly when br shooting. I bought several of them last year when CZ ran them for $19.99 each. I prefer the 5 round polymer in my 457 American Synthetic while squirrel hunting because there is less chance for the mag to hang up in any thick underbrush when walking in the woods.

 

I have two 5 rounders, one steel and one poly. Both have worked perfect since day one.

 

My V-MTR also came with the Steel (above) 5-rnd mag. And my 455-SS Lux with a 5-rnd Poly. As I said, I prefer the poly in both sizes, I have 2x poly 10s, 5x poly 5s, 1x steel 5.

 

I just picked up 4 of the 5 round poly. For hunting I prefer a mag that doesn't project. The steel weren't available and the gun comes with 2 10 round mags. I'll pick up steel 5's when I find them. Just because. I've found me difference! In any type I've tried.

 

I vote the 5 round poly mags. Light and work flawless for me and don't rust. What isn't to like about that.

 

I have had better luck with poly mags, never had a problem with them.

 

Glad to see all the positive responses on the poly mags, as that's what I have coming my way.

Quick update on my order thru CZ-Parts...

- Order confirmation from CZ-Parts 03/16/23 6:18 PM EDT​

- Shipping confirmation from CZ-Parts 03/17/23 1:17 AM EDT​

- Shipping confirmation from UPS 03/17/23 2:10 AM EDT​

- Scheduled delivery from UPS is Monday 03/20/23​

While I've seen UPS miss 'scheduled delivery' dates before, if they actually deliver on Monday... they will have gotten me my package in about the same time as some US based suppliers I deal with... and faster than probably most.

I'm liking it!

​

​

​

 

That is not the real CZ-USA site. On the real site, the 10 round mags are out of stock and are $35.

I hope you get your order.

 

Polys for me. Ten is my preference, but I have some 5s, too.

 

I am considering a single shot mag for use with 22 short. Anyone have any experience with this?

 

You might


Did you consider getting a single shot adapter? Adapter

 

FWIW, another member posted about recently ordering a CZ rail and other parts from this same website and had his order in just a few days.

 

Link to that thread

I ordered parts from CZ.

And they shipped direct out of check republic! In fact my payment went over direct and my CC company froze the card. I had to call and give the ok. I assume I was on the czusa site. That is where google dumped me with a "cz usa" search. CZ parts, but not 457 parts. The parts arrived very...

www.rimfirecentral.com

 

I had the same thoughts after buying mine. I have three 10s and two 5s, all polymer. After 600 rounds, very few misfeeds, almost none. I added extensions and they have been feeding without errors. I love the solid feel of the steel mags, but they don’t add any increase in function. The steel 10s are nearly impossible to find as well.

 

Extensions for CZ magazines?

 

I have one 5, four 10s, and one 25, all poly. Never had an issue with any of them.

 

One of the guys I know, just got in trouble at his range for using the extension, as it now makes the mag over the 10 shot legal limit

 

You would be fine putting them on your 5 rounders though.

Maryland has a 10rd limit as well. But just for buying, selling or manufacturing in state. We can buy or manufacture whatever we want out of state then possess it in state.

I know, weird law. But we get to own what we want

 

Have the same setup. MTR used for club BR matches. I have found that 3 10 round poly mags are perfect. Some of the matches are timed events, so load all three, first five shots for sighters then 25 for score. Spend your time cutting X's not reloading. Good luck.

 

I own approx (7) CZ mags. 5 metal, 2 Polymer. They all work fine. I only own one 10 rd.

 

10 rd poly's for me. If you buy enough of them, you will get a few that have minor issues. I have mag extensions on most of them. Just like the mags, some extensions work right out of the box...some need a little adjusting.

I also have a hand full (10 or 12) of the 5 rd poly's. Never had any issues with them other than not holding enough rounds.

 

BDH55, I'm glad that you posted your results. I tried to place an order Friday night. Their website was very slow and I eventually cancelled the order. Saturday I was out and about and stopped to fill my truck with gas. Put my card in the pump and the pump display said 'Card Denied' and then flashed 'FRAUD'. I knew instantly what had happened. Called the card services number and they were third party, could not pull my card info up so I was SOL on the card until this morning when I went into my credit union. Got it cleared up and they took the alert off the website so I can do business. What gets me is I did not get a fraud alert call. They just locked my card down. I made it plain that I wasn't happy with that part of the deal but life goes on.

Ok, back to the regularly schedules magazine topic.........

Within the next 10 minutes I'm ordering my mags

Annnndddd........ the shi&@%%!$fn*@^#%^ at my credit union will see me again in the morning. The system declined my card AGAIN! I'm PISSED!

 

Sorry to hear that. FWIW, I used a MC that I rarely use just in case anything went wrong, and the transaction went thru just fine. Although, thinking about it, I am kind of surprised that I didn't at least get a security text from my bank asking 'Was This You?' or something similar.