124gr or 125gr 9mm LRN?

[y5e06]

I'm looking to start reloading 9mm for my Taurus 24/7 pro.
I think I'm going to go w/ Dardas.
http://www.dardascastbullets.com/mm5/merchant.mvc?Screen=CTGY&Store_Code=dardas&Category_Code=9
However, I see both a 124gr and 125gr selection. The weight difference is minimal but I notice the 125gr appears to have a deeper crimp groove vs the 124gr. Which one is more proper to select for general 9mm loading & plinking? I'm not familiar (yet) if 9mm needs heavy crimp, light crimp, or what which might dictate a better selection from either of these two.

Thanks
Morgan

 

[rcmodel]

Well, heres the thing.

Auto pistol bullets do not normally have "crimp grooves".

Those 125 grain Dardus bullets were cast in .358" revolver bullet molds, then sized to fit 9mm auto pistols.

Revolvers use a roll-crimp, and revolver bullets have a deep crimp groove.

Auto pistols use a taper crimp, in which no crimp groove is needed.

Was it me, I'd get the 124 grain auto pistol bullets and leave the 125 grain revolver bullets to the revolver shooters.

rc

 

[CBP]

I've purchased both weight bullets from him to try them out. My M&P and I both prefer the 124 gr. For my gun, the 124 gr. is more accurate. As far as reloading, the 124 gr. gives you more variability in OAL. The "belt" on the 125 gr. limits the depth to which you can seat the bullet. As far as I understand, you do not want to push the edge of the belt past the case of the mouth (too deep), or the bullet will fall into the case. I've never read anything else on this, but based my observation on reloading 200 gr. SWC for .45 ACP which has a similar design. You can decide which might be best for you.

As far as crimp, I just put a light crimp on my 9mm bullets. It's all part of the experimentation and will depend on your powder, brass, and gun.

I've been pleased with the quality of the Dardas bullets. I need to order some .38 from him soon.

 

[CBP]

Those 125 grain Dardus bullets were cast in .358" revolver bullet molds, then sized to fit 9mm auto pistols.

RC,
I'm not sure this is true with these bullets. From what I read several months ago, the 125 gr. design he is selling was one of the original ones for 9mm in general. I would suggest the OP contact Dardas directly for specific questions on the bullets. I know they don't have a crimp groove like a 158 gr SWC for .38/.357.

 

[rcmodel]

Nevermind!

 

[Daniel1120]

I just bought 2k of the 125 gn, after seeing another post recomending them. I'm reloading for a couple cz-75's which have short chambers. According to him they dont have to be sat so unnaturally deep compared to the 124, because of the dimensions. If you have a short chamber you might do the same.