TargetTalk

A forum to talk about Olympic style shooting, rifle or pistol, 10 meters to 50 meters, and whatever is in between. Hosted by Pilkguns.com
It is currently Sun Apr 23, 2017 12:33 am

All times are UTC - 6 hours [ DST ]




Post new topic Reply to topic  [ 409 posts ]  Go to page Previous  1 ... 17, 18, 19, 20, 21
Author Message
PostPosted: Tue Feb 14, 2017 1:27 pm 
Offline

Joined: Mon Aug 24, 2015 8:13 pm
Posts: 66
OK - I uploaded a quick Labradar video shooting 32acp to You Tube - I may revisit it but here is the first cut: 1.4gr vv310 - a bit fast because I want to get to 800fps and see how that load fares.

https://youtu.be/QyAWRcDi_xQ

The backstops are 'Acreage Bullet Catches', made here in Nebraska. They are AR400 steel, very portable and very neat and I have them at 25 m/yds and 50 m/yds. I have a prototype for .223 (which will feature here in a week or two).

~Zip


Top
 Profile  
 
 Post subject: Commercial Ammo - 32 ACP
PostPosted: Sat Feb 25, 2017 5:25 pm 
Offline

Joined: Fri Nov 25, 2005 11:46 am
Posts: 389
Location: Western Washington State, USA
Greetings,

I recently posted my results with Fiocchi and Federal American Eagle commercial ammo.

The Fiocchi 73 grain FMJ RN would not stay on a repair center at 50 yards.

I took apart one round yesterday and discovered that the bullet measures 0.308".

No wonder it shot so poorly. Also, the brass is junk as the case wall variation is as much as 0.004".

The American Eagle 71 grain FMJ RN bullet measures 0.311" and eight shots fit into the ten ring at 50 yards.

The brass was better than the Fiocchi varying up to 0.002" wall thickness.

Interesting to note that the Federal bullet was Copper plated. The Fiocchi bullet had an exposed Lead base.

The Federal bullet also had a "dimple" in the base.

Oh yes, the barrel is a stock Pardini 32 ACP mounted in a machine fixture. Groove diameter is 0.314", bore diameter is 0.306".

One mystery solved....

Cheers,

Dave


Top
 Profile  
 
PostPosted: Sat Feb 25, 2017 8:03 pm 
Offline

Joined: Sun Aug 21, 2016 6:11 am
Posts: 67
Location: Haymarket, VA
Federal hydroshock 32acp is 65gr jhp. They do not sell the components separate


Top
 Profile  
 
PostPosted: Wed Apr 05, 2017 10:27 am 
Offline
User avatar

Joined: Tue May 27, 2014 3:21 pm
Posts: 185
Location: Gainesville, Florida
zipp0,
I stumbled onto the same issue re the OAL for the Travis 62-gr LSWC bullets. The problem began with a worn spring (a mag spring for a GSP 32 S&W L) that I cut and used as my 32 ACP mag springs, to solve the initial spring issue (failures to feed, stovepipes) as discussed by Oldcaster early in this string. I thought it better to cut a GSP spring than my Pardini springs...

This sad saga began with the first alibi I've ever had with the Pardini SPBE 32, a failure to eject. The problem was worn GSP springs; specifically, the end where I had cut the spring wire end had worked itself around the follower and was sticking. So, with the approaching regional Dixie Match, I decided to replace both springs and used the original springs magazines and conservatively cut 1.5 coils. A litter stiffer than before, but ought to work (probably should have gone with two coils).

About the same time, I discovered a box of initial loads of the 62-gr LSWC that were short (0.852 OAL). I tried a few at the range and they shot into a slightly enlarged hole at 50 yards. Whoa, serendipity knocks I thought, maybe I'm on to something. And then my lizard brain kicked-in: geez, I wonder if I could just resize the OAL of all the 0.885 rounds...

DON'T DO THAT. DESPITE INTERNAL ALARMS, GUT FEELINGS, DON'T! Well, I did, to about 200 loaded rounds, which group like buckshot (well, not that bad).

That brain fart led to the synchronicity of short bullet meets a little too stiff spring, and viola, the stovepipes are back, usually the middle bullet in the 5-round magazine. I decided to shoot the re-sized bullets rather than pull them and start from scratch.

At this point, I noted your comments on using the short bullets. So, I'm getting ready to do some more load testing, using wimpy springs. I'm also playing around with the 75-gr Rim Rock bullets and WST and TiteWad.

The OAL issue should have been self-evident if I had just put an empty brass in the barrel and compared it to different OALs of loaded bullets, the issue would have been glaring. I've known the 0.870+ loaded bullets were a little long, and that once loaded into the breech, they could not be unloaded; rather, they had to be shot. A better bullet design might be use base of Oldcaster's design with a RNFP (similar to Rimrock) to give an OAL of ~0.900. The base of the nose would need to be ca 0.311. Unexpected loading issues and summer's nearly here, jeez, dipnet


Attachments:
32 ACP_OAL-sm.jpg
32 ACP_OAL-sm.jpg [ 77.85 KiB | Viewed 268 times ]
Top
 Profile  
 
PostPosted: Thu Apr 06, 2017 10:37 pm 
Offline

Joined: Mon Aug 24, 2015 8:13 pm
Posts: 66
I have to load a bunch up for Saturday - will use the same recipe - will let you know how it goes


Top
 Profile  
 
PostPosted: Sat Apr 08, 2017 8:56 am 
Offline
User avatar

Joined: Tue May 27, 2014 3:21 pm
Posts: 185
Location: Gainesville, Florida
First, I inserted Hammerli 22 springs that I had bought from Larry's and this fixed the failure to feed/stovepipe problem (apparently more than 1.5-coils need to be cut off factory Pardini springs). I also bought a Colt 1903 spring from Wolff, which is quite long, perhaps enough for four magazines, perhaps an inexpensive alternative to adjusting follower tension.

Tested several loads using the Rimrock bullet (when seated to 0.900", the case headspace ~same as new brass [0.674-675"]). As noted by zippo, the 62-gr LSWC has to be seated with the shoulder flush to case rim to correctly head space. But longer OALs (0.870 to 0.890) will produce good accuracy; however, the shoulder is forced into the barrel mouth and a loaded round cannot always be unloaded without pulling bullet, and making a mess.

Of the six loads I tested, one using WST produced decent accuracy (1.90gr WST, Fed Match primers, R-P brass, OAL 0.901, crimp 0.332, vel 810-853; 50 yard group: 2.38" c-c).

Another load puzzled me: 5 shots went 1.27" but total group ballooned to 5.3"?? This was the 1.60 VV N310 trial load. I am clueless whey the bizarre variation. There was a gusting wind and perhaps that cause the group to open up. The velocity range was 783-812, SD=7.0. I'M Going to repeat this using 1.80gr N310.

I've updated the attached 32 ACP load data summary with new data . Cheers, dipnet


Attachments:
32 ACP_load_data.pdf [96.63 KiB]
Downloaded 25 times
Top
 Profile  
 
PostPosted: Mon Apr 10, 2017 9:40 pm 
Offline

Joined: Mon Apr 03, 2017 11:35 am
Posts: 4
That's great information. Thanks. Two questions though. Are you talking about the Hammerli Trailside/Xesse magazine spring 5 pack ($29.95) at Larrys guns? Did you just replace one for one with the .32 magazine springs? They look a little long, like some trimming may be needed. Second question, does any type of small pistol primer work? What do you prefer? Thanks again.


Top
 Profile  
 
PostPosted: Tue Apr 18, 2017 3:34 pm 
Offline
User avatar

Joined: Tue May 27, 2014 3:21 pm
Posts: 185
Location: Gainesville, Florida
Re springs; yes, I just used one of the Hammerli 22 springs per 32 magazine and feeding issues are sorted and no cutting of the spring is required. I did bend in the end beneath the follower so it cannot poke out the slot in the magazine. I use either Federal or Winchester small pistol primers.

Just did another bunch of load testing in preparation for the Dixie Match in Jacksonville at the week's end. For the heck of it, I tried the Rimrock and Hunter "75" grain LRNFP bullets. The Hunter bullet was more consistent in weight (most 0.5-grain lots fell into 76.5 to 76.9 grains) whereas the Rimrock bullet weights were more variable and less accurate, one case with bizarre variation. However, the Oldcaster 62-gr LSWC bullet sold by Travis outgroupped all. Current best load: 1.2 grains TiteWad, R-P brass, OAL: 0.885, crimp: 0.332.

I want to do some more experimenting with WST; this is the best metering powder I have ever used and the SDs are less than 10.0 for loads I tested (using the UniqueTek Micrometer powder bar). That is consistency with a capital C. I suspect about 1.4 to 1.6 grains may be the ticket with the 62 grain bullet. Never used this powder before but I am very impressed. Cheers, dipnet

PS: My head spacing foray was a waste of time; back to smashing the shoulder of the 62-gr bullet into the bore's throat.


Top
 Profile  
 
PostPosted: Thu Apr 20, 2017 9:32 pm 
Offline

Joined: Tue Dec 01, 2009 9:09 pm
Posts: 559
Location: Chesterfield Missouri
I don't remember who it was but it was someone I feel that did their homework suggested that Federal match primers gave them better result. It was the only thing available at the time anyway so I tried some and was not disappointed but did not have results that I could tell were better. So far my best of all load I tried is 1.5 of Titegroup. Several have had good results with around 1.1 to 1.2 grains of Titewad but it didn't work as well for me. What does all this mean? It means that different things work for different guns and the most we can take from this is guidance in what to try and maybe what to avoid (unless nothing else works).


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 409 posts ]  Go to page Previous  1 ... 17, 18, 19, 20, 21

All times are UTC - 6 hours [ DST ]


Who is online

Users browsing this forum: No registered users and 2 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Group