View Full Version : Used PM45 anything to watch out for? (updated)
Scott321
02-23-2020, 05:51 PM
**Update 2/27/2020: http://www.kahrtalk.com/showthread.php?33221-Question-PM45-Chipped
**Update 2/29/2020: No problems at range, see post #5 below
**Update 3/10/2020: new RSA, see post #6 below
I'm thinking about picking up a used PM45 at my local dealer. Anything I should look for regarding issues with that model?
Bawanna
02-23-2020, 08:22 PM
Really hard to diagnose issues without shooting. Unless there's obvious abuse your most likely ok. There are no pandemic issues with the PM45 that I'm aware of.
If you find an issue bring it to the board and we'll work it out together. Some smart cookies here and I know a few of them.
I like cookies too.
Scott321
02-24-2020, 04:26 PM
Put deposit down. Might wait until next paycheck to pickup so I get the ammo and range discount.
I_Like_Turtles
02-24-2020, 04:39 PM
Yes give us a range report. I just recently decided to give the all-steel 9mm version a second look. I have been carrying a Kahr CW 45 but I am not happy with the flinch I seem to have learned in the last 15 years of not shooting every week. I suspect a PM45 to have a decent amount of kick but you are likely a better shot than I am.
Scott321
02-29-2020, 11:01 PM
I did a short range session today. The range was closing by the time I got there and I wanted to test my replacement MagGuts in the K9, reaffirm reliability with the MagGuts in my CM9, reaffirm my CW40 was working (second range session since warranty work), and make sure the Beretta mods I did were working, so I rushed everything. Tested only for functionality and just noted casual accuracy.
With two 45-5 and one 45-6 I had zero malfunctions with various FMJ, and Speer GD SB hollowpoints. The kick seemed about on par with my CW40 (now that the CW40 is broken in). The CW40 seemed like a heavier kick when new... although maybe the Hogue wraps on the 40 also affected the reduced recoil feel? Or maybe the 40 target ammo I grabbed for this session was downloaded? Also, I don't know if I need a new recoil spring on the PM45 so that might have affected recoil feel. It felt like maybe 10% more felt recoil than on the CW45 with similar loadings.
I didn't test for accuracy, but it seemed to be on par with my other Kahr's while rushing though the testing. I just finished rounding off the corners on the backstrap and one corner of the magazine baseplate to have it feel like I want in the hand. Now I can finally order a holster for it, as this will replace my CM9 for summer carry.
Side note... it's about the same size as my K9. The PM45 is a hair shorter in length, a little bit shorter in the grip, but a little thicker overall. However, the palm swell of the K9 grip is wider than the PM45 grip.
Scott321
03-10-2020, 11:05 PM
Another update... I installed a new PM45 RSA from Kahr yesterday and took it to the range today since my holster came in and I'm planning on using this as my warm weather EDC. The PM45 was very accurate, natural to aim for me, and I had zero malfunctions. IMO, with the new RSA, there seemed to be less "thud" during recoil. It was more like the push my CW45 gives me, although the perceived recoil still seemed to be a tad more than the CW45 (as expected). I'm keeping the old RSA as a backup, but am wondering where to get a replacement outer spring for it.
Additionally, I brought my CW40, as I wanted more time on the range with it. With the new RSA in the PM45, the greater perceived recoil and snappiness in the CW40 was noticable, but not bad. With target ammo, the CW40 had one premature slide lock... I don't think it was me, but it just means I need more time on the range with it.
Anyone know where to get a replacement outer spring for the PM45?
DJK11
03-11-2020, 06:21 AM
Anyone know where to get a replacement outer spring for the PM45?
My first thought was contact Kahr, they may have springs. If available, just purchase a couple TP45 springs and cut to fit.
Bawanna
03-11-2020, 11:27 AM
Might be able to get that spring from Wolff, I'm not positive but they are Wolff springs. Seems some items you can't buy direct from Wolff, must go to Kahr, others you can, not sure what the deal is there.
DJK11
03-12-2020, 04:09 PM
When I spoke with Wolff about PM45 springs, they told me that they have never seen a PM45 and therefore don't have a spring. The guy I spoke with did not have kind words regarding Kahr.
Kahr CS told me the outer recoil spring on the plastic pistols are the same just a different coil count. So I purchased a bunch of TP45 springs and just trim to fit my pistols.
Bawanna
03-12-2020, 05:21 PM
One would think Wolff would speak kindly of Kahr since they make all their springs. That's strange indeed.
yqtszhj
03-12-2020, 06:42 PM
I did some digging one time and I found out I believe the PM9 and PM45 use the same inner and outer springs in the recoil spring assembly. I believe the inner and outer were both 9 lb. springs.
DJK11
03-13-2020, 06:06 AM
Years back I measured the individual spring weights of the p380, pm9 & pm45 and posted the results. I'm too lazy to look for my notes and back then there wasn't much interest.
gb6491
03-13-2020, 09:29 AM
Years back I measured the individual spring weights of the p380, pm9 & pm45 and posted the results. I'm too lazy to look for my notes and back then there wasn't much interest.
This it?
I feel that the recoil spring on the PM45 should be a few pounds heavier. So, I cobbled up a compression spring gauge from a digital fish scale.
I compared the outer recoil springs from a PM9 and PM 45. The non-scientific results are:
PM9 OEM spring = 12.5 lbs.
PM9 Wolff 20.5 lbs. set = 15 lbs.
PM 45 OEM spring = 12.5 lbs.
I have not tested the complete recoil assembly yet, need to build a fixture. The tests were with new unused springs and the springs in the pistols with about 1000 rnds. each. The results with new and used springs were essentially the same with in a couple ounces. The springs were compressed to 90%.
I may try the Wolffs spring in my PM45. Any thoughts?
http://www.kahrtalk.com/showthread.php?7608-PM-recoil-springs
Regards,
Greg
DJK11
03-13-2020, 08:52 PM
YES, that's it. Great detective work. I got into a debate with Jocko about recoil springs more times than I want to admit. There are posts where I measured the p380 springs and mic the coil diameter. There is a post where I measured the inner spring on the two spring setup.
I remember the inner springs were the same.
Thanks Greg
Scott321
03-15-2020, 03:49 AM
YES, that's it. Great detective work. I got into a debate with Jocko about recoil springs more times than I want to admit. There are posts where I measured the p380 springs and mic the coil diameter. There is a post where I measured the inner spring on the two spring setup.
I remember the inner springs were the same.
Thanks Greg
So, following your thread, are you suggesting the 20.5lbs PM9/40 spring (SKU 52820)? It sounds like you stated that the OEM spring for the PM9 and PM45 were the same and lighter than the aforementioned spring. Any update on results with the PM45 and heavier spring?
Currently, I've been loading with Speer GD SB for the PM45, but I often prefer the +P loadings e.g. Rem GS 185gr +P when I can find them (often used in my CW45). I also shoot and sometimes carry WWB 230gr JHP. Fed HST sometimes makes it into the mix, too.
Any suggestions for the CW45 and TP45? Heck, while we're at it, any suggestions for the CW40 and T40?
DJK11
03-15-2020, 08:27 PM
A nine year old thread and things have changed. My pm45 at the time was the first iteration with the shorter slide. The outer recoil spring had 13 coils as did the pm9 at that time. Kahr lengthen the slides .125 as well as the recoil assembly. The outer spring then had 15 coils. My frame was getting beat to hell from the slide, hence I summarized a stronger spring was needed. While the stronger spring helped a lot, it wasn’t the total fix. Kahr CS machined the FRAME, then replaced, then modified again for the fix.
I haven’t purchased Wolff springs in a few years and at the time their pm9 springs had 13 coils. Not sure if they now have 15. A 13 coil spring would be too short for the current crop of pistols.
I hope my explanation is clear?
Scott321
03-15-2020, 09:14 PM
A nine year old thread and things have changed. My pm45 at the time was the first iteration with the shorter slide. The outer recoil spring had 13 coils as did the pm9 at that time. Kahr lengthen the slides .125 as well as the recoil assembly. The outer spring then had 15 coils. My frame was getting beat to hell from the slide, hence I summarized a stronger spring was needed. While the stronger spring helped a lot, it wasn’t the total fix. Kahr CS machined the slide, then replaced, then modified again for the fix.
I haven’t purchased Wolff springs in a few years and at the time their pm9 springs had 13 coils. Not sure if they now have 15. A 13 coil spring would be too short for the current crop of pistols.
I hope my explanation is clear?
Very clear. Thanks!
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