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Walther GSP-C Expert

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Post by fc60 on 3/9/2020, 5:49 pm

Greetings,

Today I fired my first 50 rounds in my "new" GSP-C Expert - 32 ACP.

Five years ago, my Pal, Hoover, welded up a spare bolt I had and I machined it for the 32 ACP rim.

I had a spare piece of barrel blank and made one barrel for the pistol and a second one for the "mechanical tester".

I loaded some 65 grain SWCHB home swaged bullets to about 900 FPS, to see if the gun would function.

Hurray, only one malfunction in 50 shots. One of the case rims got on the wrong side of the case below and stopped the bolt open. Operator Error!!!

Very little change in sight setting from the original 32 S&W Long WadCutter barrel.

Recoil had a definite snap to it; but, I noticed the muzzle did not leave the target face. Perhaps I should watch the front sight and not the target?

I have the plastic case catchers made by Walther and sometimes the first round bounced out, perhaps a lesser powder charge will help. I did get all 50 pieces of brass back!!!

Long term goal is to produce an accurate and  low recoil pistol for my wife who has a touch of Arthritis.

More testing next week with less powder.

Cheers,

Dave
fc60
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Post by lablover on 3/9/2020, 6:02 pm

That’s fabulous info.  Look forward to seeing your testing with the GSP

THANK YOU for sharing
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Post by fc60 on 3/16/2020, 6:02 pm

Greetings,

Sunny day for testing this morning.

Fired another 50 rounds of the swaged 65 grain bullet loaded to about 860 FPS.

No malfunctions and got all my brass back!!!

Just finished loading another 50 rounds at about 820 FPS for next weeks test.

Hmmm, how low can you go?

Cheers,

Dave
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Post by Dr.Don on 3/16/2020, 9:45 pm

Dave,

What are your barrel groove specs? .311? .312?  I used a Shilen .311 blank when I was trying to build my .32acp conversion unit and I still have about a 6" piece of that blank looking for a project.

Would love to get my hands on a few dozen of your hand swaged 65s to test in my Pardini, but I know you're not in the bullet making business.

By the way, I did post some 50 yd test results on the 64gr T&B quite a while ago.  But they were group measurements, not group images.

Best regards,
Don
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Post by radjag on 3/16/2020, 10:43 pm

Dr. Don, thanks for reminding about your earlier thread - here:-

https://www.bullseyeforum.net/t10849-32-acp-bullet-test-64gr-coated-swc?highlight=64gr+T+B

I knew that I'd read all about T&B bullets on this forum, now I know where.

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Post by fc60 on 3/17/2020, 11:11 am

Dr.Don wrote:Dave,

What are your barrel groove specs? .311? .312?  I used a Shilen .311 blank when I was trying to build my .32acp conversion unit and I still have about a 6" piece of that blank looking for a project.

Would love to get my hands on a few dozen of your hand swaged 65s to test in my Pardini, but I know you're not in the bullet making business.

By the way, I did post some 50 yd test results on the 64gr T&B quite a while ago.  But they were group measurements, not group images.

Best regards,
Don
Greetings Don,

The barrel is a mystery. I purchased it from a Forum and it was advertised as a Krieger. Krieger says they did not make it.

It is stainless, 13 twist, eight lands/grooves that measure 0.300/0.312, and is 32 HRC.

The chamber is cut to head space on the case rim, not the case mouth.

I reviewed the T&B tests you posted. Looks like a good solid nine-ring group at 50 yards.

Today, I will be casting slugs for more swaging.

Cheers,

Dave
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Post by fc60 on 6/23/2020, 11:10 am

Greetings,

Attended the Monday 'Geezer' pistol practice yesterday after a long 'virus' shut in.

Fired a mix of swaged 32 ACP bullets in my converted Walther GSP-Expert with no malfunctions and got all my brass back.

My hold was not up to standard. The repair center did not quite cover all the holes at 25 yards.

Things improved when I switched to my FAS603. Last Rapid Fire all shots in the black!

Cheers,

Dave
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