Anyone load PD 147gr TC bullets?


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ny32182
August 5, 2010, 03:45 PM
I just got 2k of these and would like to use them to work up an IDPA-optimized load. Can anyone recommend a good OAL? I don't seem to have a bullet similar to this in my 9mm book.

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rcmodel
August 5, 2010, 04:13 PM
As with any TC or JHP bullet, the correct OAL is entirely dependent on your guns chamber throat.

Take the barrel out of your gun and take it to the reloading bench to use as a guage.

Load them progressivly shorter until they stop hitting the rifling leade when you drop them in the chamber.

rc

ny32182
August 5, 2010, 04:49 PM
Will do... thanks RC. I guess I really only intend to shoot them in one pistol.

I'd be curious to know if there is a popular factory loading that uses this kind of bullet, and if so, what the OAL is.

rcmodel
August 5, 2010, 04:55 PM
I haven't a clue what it looks like?
I went to Precision Delta's website, but apparently they don't do pictures.

Post a picture and I'm pretty sure something else like it could be found.

Or start at 1.150" or so and reduce OAL until the bullet clears the rifling leade.

rc

ny32182
August 6, 2010, 09:32 AM
RC,

This is their picture:

http://www.precisiondelta.com/img/product/lg/B-9-147-FMJ-TC.jpg

Thanks,

chbrow10
August 6, 2010, 10:54 AM
I have loaded these for my son's Glock 34 for USPSA Minor PF. Glock mags like short loaded stuff, so we kept it to 1.135 or so.

ny32182
August 6, 2010, 11:26 AM
That is exactly what I will be shooting them in; thanks.

dhfenno
August 7, 2010, 09:28 AM
I have loaded them at 1.130 with good results in my Glock 34.
Only reason I stopped was the exposed lead base and fast powder makes a bunch of smoke. Now I use a JHP that covers the base and no more smoke. The PD will work well for you as long as you're not shooting them inside and there is a slight breeze.

Red Cent
August 7, 2010, 10:23 PM
My 34 likes 147 plated at 1.125.

ny32182
September 26, 2010, 01:18 AM
I loaded up some test rounds today at ~1.135 and plan to chrono tomorrow.

The only quirk I have noted is that some of my cases have a slight "doughnut" around them, right in the middle, sort of directly under the base of the bullet. This never happens with my usual 115gr load.

I have seen this effect before in pictures where it was determined that the crimp contact was occuring way too early and the case was basically trying to telescope onto itself.

My only guess at this point is that since the 147gr bullets have way more surface area in contact with the case, near the end of the stroke this extra contact is pressing harder down on the case than with a 115gr bullet and leading to a slight telescoping effect. Does this sound likely? The crimp ring should not be touching the cases at all.

It is not enough to keep the affected finished rounds from going into a gage, or my chamber, but is kind of annoying none the less.

rfwobbly
September 26, 2010, 08:49 AM
It's been my experience that when loading 147gr in 9mm it's just as important to know where the powder level is relative to where the bullet's base is. If your case bulge is convex, then it might be the powder being compressed too much.

http://lh5.ggpht.com/_E3bV2jGIaSg/TCDzr3AhLgI/AAAAAAAABS8/5rIxHqzkd14/s720/Bullet%20Depth2.jpg


"OAL" can become a mental rut. In actuality it tells us very little, it's simply easy to measure since we can't see inside the case. Never confuse "easy" with "what you need to know".

RealGun
September 26, 2010, 09:07 AM
The Lee book shows 147 gr jacketed at 1.095 OAL for all powders listed.

On the ring impression in the case, I get that on 124 gr 9mm, 230 gr .45 ACP, and 180 gr .40 SW. It's not a problem.

BTW I live only a few miles from you. If you wouldn't feel like you needed a shower after viewing a bunch of Lee equipment, come and visit sometime. PM if interested.

918v
September 26, 2010, 02:19 PM
It's been my experience that when loading 147gr in 9mm it's just as important to know where the powder level is relative to where the bullet's base is. If your case bulge is convex, then it might be the powder being compressed too much.

http://lh5.ggpht.com/_E3bV2jGIaSg/TCDzr3AhLgI/AAAAAAAABS8/5rIxHqzkd14/s720/Bullet%20Depth2.jpg

No. Powder compression will never bulge a 9mm case. One of our friends here "double compresses" his nuclear-level 9mm loads and has not bulged a case yet.

The bulge is entirely due to the base of the bullet encountering the thicker case walls further down in the case. The bulge is not an issue in most guns as 9mm chambers are plenty large to acommodate the bulge.

cyberiad
September 26, 2010, 10:09 PM
I've loaded the PD TC 147 grain from 1.100 to 1.130. If I recall the measurements I took correctly, Federal American Eagle 147gr with a TC bullet was at 1.08. I use Solo 1000 which has a burn rate very similar to Titegroup but I have no issues at all with smoke.

ny32182
September 26, 2010, 10:21 PM
The bulge is entirely due to the base of the bullet encountering the thicker case walls further down in the case.

Ah, this was actually my second guess. I think there might be something to this.

I did not get to shoot them today due to rain and no covered place to put my chrono. Hoping for next weekend.

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