CZ 457 MTR Match chamber - ?

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KrushD

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Hi all,

I think I can get a CZ 457 MTR at a decent price.

It’s got a heavy barrel and the MATCH chamber.

Doing some research, I see it’s finicky with certain ammo. I would plan to feed it reasonably good quality ammo but I don’t want to spend all my time obsessing about ammo and what will work and what will not.

Is this stuff a bit overblown? And generally with good ammo will it work fine?

I intend to use for range/bench and eventually for club type competitions.

will appreciate any advice from you guys with more rimfire experience.

thanks!
 
Barrels I have seen have shot SK long range very well. some may prefer SK rifle match and lapua center X

If you shoot quality match ammo, it should function fine... what it prefers to shoot, only testing will prove that

Good luck.

Jerry
 
If you haven't shot a lot/wide variety of 22LR...here's some thoughts
1. Buy up a wide variety of rounds and test them all. Some will perform more consistently than others, some will shoot superb while others just won't group. But in another rifle...one that shot like trash might be great, etc. I have some really good fancy ammo that just won't group in anything that I own...and I have a litteral bucket of cheap ammo that shoots surprisingly well in most of them.
2. When you're switching between rounds...allow at least 5 shots of the new round to foul/settle the barrel.
3. Once you find one that shoots great in your rifle...buy up as much of that load/lot number as you can. You might find that it shoots great with one lot...but then accuracy changes with the next lot of the same thing. Buy up lots of the "2nd best" as well...because you'll find that you'll soon be hoarding what's left of your 1st best.
4. Some bulk stuff shoots really "dirty". Lots of unburnt powder granules/soot/carbon fouling left behind. In a match/tight chamber it can build up and be a pain to clean out. If you're lucky, you'll have another rifle that really likes that dirty ammo and you can plink away with it.
5. Can be controversial...I have a few really accurate 22's that have nearly years and years of shooting through them...and I've never really cleaned the barrels. I've cleaned the bolts/actions/etc...but not the barrels. I'm of the mind that you can do more damage to your crown/bore with a cleaning rod for a 22lr than not cleaning it. If they get dirty/wet in use...I'll carefully run a very lightly oiled patch down the bore to clean/dry it out. Works for me...do what you will
 
Post 4 has lots of good advice. I've had a 457 V-MTR since the first of the year and I've found it NOT very picky. Even cheap stuff like Fed Auto-match shoots OK, although the better stuff DOES shoot more accurately. That's mostly because it's made better. I've found that CCI-SV is the best "Low-cost" ammo, and I can do even better with ammo like SK+, ETC. I use SK-Magazine (ca 10c/round) for fouling b4 any shooting, but I'm starting with a spotlessly clean barrel. After cleaning I run an Alcohol patch thru to remove solvents, then a dry patch, then an oil patch if I'm not shooting later that day or the next.
I DO Disagree with the #5 Not cleaning advice, especially if you plan any sort of competitive shooting. Maybe I'm wrong, but cleaning is a standard in competitive shooting; you won't see any 'real' BR shooters go more than 1-2 cards w/o cleaning.
 
After over 35k of shots in my mtr and having tried the cleaning and non cleaning the barrel routine, in my case cleaning the barrel and above all making sure that no carbon ring started to form in the chamber made a huge difference in accuracy, as to not damage the barrel while cleaning it i guess you have to use common sense and be carefull.
 
Buck1950: PRS type shooters won’t be having a spotlessly clean barrel. Clean out the carbon ring every 250-300 rounds and let the bore ‘season’.
 
Precision Rimfire Rabbit Hole.
Few of my friends are down there.
One 3D printed a bolt to replace the real bolt, it’s a guide
for the cleaning rod /process.
Ammo by skid all the same Lot.
Enjoy it’s all good.
 
Heheh...I said #5 would be controversial!

To each their own. For centerfire stuff...for sure I clean and then foul. When I played around with PPC/22/243cal stuff we used to clean fastidiously (stupidly OCD might be a better descriptor). But for relatively low FPS full soft lead 22 I don't. Again...I clean the action/bolt/bolt face/chamber/etc (I didn't spec all the other bits) but not the bore of 22lr's.

IMHO (again, a personal take on things...not writ and rule for everyone...which makes this hobby so fun!) if you're pursuing reliable precision, you do whatever routine works for you, your gear/loads/setup/etc, to produce the results that you want. If that's a certain round, sorting/weighing/sizing/etc, shot numbers between cleaning, whatever...do what works for you.

just my $0.02
 
all good advices here.
I tested various kinds of ammo in my 457 MTR.. elley/SK/CCI/Norma.. you name it... most of them did not make any trouble for me. Frankly, the only one that I had issues with feeding/extraction was Eley BenchRest Outlaw semi-auto. No other ammo had any issues.
 
Shooting copper clad bullets versus lead bullets will show marked differences.
Shot lead and only lead or shoot copper only.
When shooting copper consistently, cleaning with WipeOut will yield some blue.
Shooting one brand of ammunition will probably result in not requiring the same cleaning regimen.
Since manufacturers use different lubricants, some difference may be seen when switching brands.
The match grades of ammunition use "specially formulated" lubricant. Copper is a dry lubricant that does not attract pollutants when carried in a pocket.
Lubricated bullets are great lint attractants than no one would want to run down their bores.
As stated previously, crown damage is an accuracy retardant especially when cleaned from the muzzle. Rod guides for cleaning from the breach are worth their value.
 
Rippo said:
Precision Rimfire Rabbit Hole.
Few of my friends are down there.
One 3D printed a bolt to replace the real bolt, it’s a guide
for the cleaning rod /process.
Ammo by skid all the same Lot.
Enjoy it’s all good.
Click to expand...
If they’re shooting even mid grade ammo they’re not getting it by the skid with the same lot number. It doesn’t work that way. Even mid grade target or match ammo is only going to produce a limited number of cases. The higher the grade the less that’s produced. Even with mid range like Center X I’ve never seen more than four cases in a lot.
 
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