CZ-97 Doesn't Like Rainier Bullets

[Langenator]

I finally got my CZ-97 out to the range, and I've discovered that it doesn't like Rainier bullets (230 grn plated round nose), which is what all of my on-hand handloads used.

It does just fine with the two brands of factory ammo-Remington and Independance-that I tried. With the Rainiers in my handloads, I'd way about 1 round in 10 hung up on the feed ramp.

Looking at the rounds side by side, the Rainiers had a bit of a truncated cone shape to them, which a visible 'corner', where the others had a smooth round shape. I figure the different shape is what causes the feed issues.

Good thing I don't have any more of those Rainiers.

Anyone else run into this issue?

Other than that, it ran beautifully. Tight groups (for me) just a touch left of point of aim. And it made my Sig 220, shooting the same ammo, look like *ss.

I do want to put a 16# Wolff spring in it, though.

 

[railroader]

I don't have a cz97 but you could try changing the overall length of your reloads to see if that helps. Mark

 

[CZF]

You probably figured it out, as the gun was built around hardball ammo.
Mine would feed GS and GD loads, even the short wide mouthed SPEER
Lawman flying ashcan load.

A big beefy gun with splendid accuracy, but no 10mm.

 

[JDGray]

Rainiers would not run good in my buddies Kimber, where fmj did. I stopped using them, when the price jumped to almost that of fmj.

 

[dleong]

I use the same Rainier 230 gr. TCJ-RN in my 45ACP handloads that I shoot through my CZ 97B.

The secret to getting the Rainiers to function in a 97B is to load the cartridges long. I ran into the same feed problem while working up a load for my 97B several years ago, and only got the loads to feed reliably after increasing the COAL to 1.275".

 

[rbernie]

The secret to getting the Rainiers to function in a 97B is to load the cartridges long. I ran into the same feed problem while working up a load for my 97B several years ago, and only got the loads to feed reliably after increasing the COAL to 1.275".

I had exactly this same issue, and exactly the same fix. Increasing the OAL was Da Bomb.

Sadly (as sumpnz found out) that also means that the rounds loaded for the CZ97 won't work in a Sig P220 or P245 since the Sig magazine is tapered too much at the front to accomodate the wide metaplat and square shoulder.