Semi Wadcutters in the CW45???

[DLButler]

Krammer
The CW45 doesn't have a polyganol barrell. It has standard land and grooves. It shouldn't be a problem in that gun. I really hope no, I bought 1500 for my CM9 and CW45.

[WMD]

Read the earlier posts. That differentiation was made.

[rkammer]

Yeah, the polyganol rifling produces much higher pressures resulting in greater knock down energy. That is why that type of rifling is prefered in a CCW. Lead however, is a no no.

I've always heard and thought that the reason lead was a no-no in polyganol rifling was because of the raised lands leading up very quickly. I've never heard that this type of rifling produced higher pressures. So, do you mean that bullets fired out of polyganol rifling will produce higher velocities than the same bullet fired out of a barrel with land and groove rifling? Is the increased velocity substantial?

[WMD]

I've always heard and thought that the reason lead was a no-no in polyganol rifling was because of the raised lands leading up very quickly. I've never heard that this type of rifling produced higher pressures. So, do you mean that bullets fired out of polyganol rifling will produce higher velocities than the same bullet fired out of a barrel with land and groove rifling? Is the increased velocity substantial?

Exactly correct! And of course, higher velocities equal higher energy. Some folks think that polyganol rifling improves accuracy but I am not convinced of that yet. I believe the biggest advantage is the increased velocity. That is just my opinion however. I do not proclaim myself to be an expert.

[jrf]

Yeah, the polyganol rifling produces much higher pressures resulting in greater knock down energy.

I've seen that written many times yet every test I've read about and tests I have personally done don't confirm it. Actually the last test I saw between cw45 and p45 the cw showed higher velocities for the same load. I'll have to google for the link again.

As for the lead....I wouldn't know.


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[RJinAZ]

Here's a direct quote from the Kahr Owner's Manual, "Lead (unjacketed) bullets can cause excessive bore fouling. We do not recommended lead bullets in Kahr pistols with polygonal rifling". It further says that shooting reloads voids the warranty but I suppose that wouldn't matter too much for a used gun (if you knew they are within SAAMI/NATO spec).

[MW surveyor]

Just load up a few, do the plop test and go shoot! If they cycle you're good to go. If not you've got other guns to shoot the reloads in. Best of both worlds.

[rkammer]

Question answered!

I took the CW45 to the range today and shot the second 100 rounds of her break-in with my reloads of 200 grain LSWC over 4.3 grains of Red dot powder. The gun cycled and fired all 100 rounds without a hiccup.

Now, it's time to certify her with my SD ammo with is either the Federal 230 gr HST or the Winchester 230 Ranger T. I'll report on that in another thread.

[WildcatFan]

My CW45 didn't like my LSWC so I started feeding it LRN. It liked those ok, but I crimp mine to .4715 for my 1911s and my Kahr liked the LRN much better once I crimped down to .469. I haven't, however, recrimped any of LSWC yet. I think I'll leave those alone as candy for my 1911s and just take LRN for my Kahr. My gun seems to like a tight crimp.

[Mr_D]

Not to be crass but loading 500-1000 rounds without testing a few first would be just silly, and potentially a huge waste of resources

Very true!!
I loaded up 50 .357 Mag to a maximum load. Shot 6 and found expanded cases and blown primers. On the way home I bought a bullet puller and undid the other 44 in the box!!

[Mr_D]

Here's a direct quote from the Kahr Owner's Manual, "Lead (unjacketed) bullets can cause excessive bore fouling. We do not recommended lead bullets in Kahr pistols with polygonal rifling". It further says that shooting reloads voids the warranty but I suppose that wouldn't matter too much for a used gun (if you knew they are within SAAMI/NATO spec).

The CW has regular rifling so it shouldn't matter.

[TheTman]

As long as you have other guns that will digest them, make as many as you want.
I have yet to set up my reload bench again since I got back in my house.

[rkammer]

Very true!!
I loaded up 50 .357 Mag to a maximum load. Shot 6 and found expanded cases and blown primers. On the way home I bought a bullet puller and undid the other 44 in the box!!

I agree but if you'll note in my post #24, the load I was using is one that I have used for many years and is a light target load that is very safe for all .45 pistols. I would never load 500-1000 loads of an untried formula.