33-55 cpa 44 1/2 single shot

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bobw
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33-55 cpa 44 1/2 single shot

Post by bobw »

My bud picked up this gun and it is very nicely done. It came with a 335~gr Hoch mold so that is what we're going to try. My question for the 38-55 shooters here what alloy? Think it is a 14 twist and will be using bp. Have new starline brass rcbs dies. Bobw
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Re: 33-55 cpa 44 1/2 single shot

Post by gunlaker »

Bob I have a schuetzen CPA with a 38-55 1:14 twist Badger barrel. For whatever reason, they didn't chamber it with their very shallow leade reamer, but with a 6 degree one. As a result it takes a lot of effort to breech seat the Hoch 335gr tapered bullet and that one never shot that great for me. Instead I've been using the BACO 377325CT ( breech seated ) which is a tapered Creedmoor bullet. It has shot extremely well with a lot of Goex Fg I burned through.

That's for breech seated shooting though.

For fixed ammo, I have a Hoch 377310 bullet that shoots pretty decently in a C. Sharps 1885 with a 1:14 twist barrel.

Chris.
bobw
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Re: 33-55 cpa 44 1/2 single shot

Post by bobw »

Thanks guns my memory failed me on the bullet it is a hoch mould but..376 and 310 weight. The bottom 2 at 376 and the ones forward of that less smallest on top of course. What alloy do you use? Powder charge? The gun uses the 2.125 case and dropping a bullet in the chamber pushed out shows me a 2.645" oal max. This sound familiar? Bobw
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Re: 33-55 cpa 44 1/2 single shot

Post by Nuclearcricket »

I have a CPA 38-55 with a 15" twist Badger barrel. For the most part I have shot a Postel bullet that runs about 310 or so. The alloy is about 20-1 give or take some. I also have a Hoch 376-300 tapered bullet that I have shot a little. I just put it together over about 45 gr of Ctg Goex and it shot well enough to 10 out of 10 on pigs at 300 M. Now I did use the whole pig but I figure that is a pretty good start to things.
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Re: 33-55 cpa 44 1/2 single shot

Post by gunlaker »

Bob, I also have the 376310. I don't like it as much as the 377310 bullet. The 376 one is tapered but the 377 isn't. I've never got better than 2 moa with the 376310, but when I shot it, I would have used 20:1 and Swiss 1.5.

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Re: 33-55 cpa 44 1/2 single shot

Post by bpcr shooter »

I shoot the lyman 379674 and my DDPP both at 16+1. Ive also ran them with Lyman #2 with good success.

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SSShooter
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Re: 33-55 cpa 44 1/2 single shot

Post by SSShooter »

While I shoot a 38-55 am sure my 12" twist load of 52gr of 2F Swiss and BACo 365gr Creedmoor bullet hold little interest for your slower twists.
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Re: 33-55 cpa 44 1/2 single shot

Post by SSShooter »

As a bit more info, on the Garmin chrony, this load charts at 1310fps with an SD of 11.
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Shadow 4
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Re: 33-55 cpa 44 1/2 single shot

Post by Shadow 4 »

Bobw,

C Sharps 1874
Whatever barrel they were screwing on a dozen years ago, (Green Mountain?) I think it's a 16 twist.
Lyman 335gr from Montana Bullet works, makes them made from Lyman #2, IIRC
Seated into the rifling
3F Old E
42 & 44gr
.060 Walters wad
Winchester case
Fed 210m primer
Compression: no clue
COAL: no clue

If I didn't list it, it's not in the case.

The Ram & Pig board were both shot at their respective firing lines, 547 yds & 328? yds, both by a 15 yr old girl, prone, (Alissah).
The Ram board is shot in this order, Red pin, white pin, blue pin, yellow, then green. winded at the start & finish, left the swinger, never adjusted the sight
These were shot at Chris Waklins, CW Quarter Horse Range at Two Hills AB.

Image38-55 3F by Brian Hickey, on Flickr

The pig board likes the 42 & 44gr loads, gets a belly ache with 43grs. 43grs was Followed up at other distances & a couple paper targets, belly ache remained

Image38-55 red42 white43blue44gr3folde by Brian Hickey, on Flickr
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bobw
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Re: 33-55 cpa 44 1/2 single shot

Post by bobw »

What lube did you use on those bullets?
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Shadow 4
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Re: 33-55 cpa 44 1/2 single shot

Post by Shadow 4 »

bobw wrote: Sat May 04, 2024 7:10 pm What lube did you use on those bullets?
The only good one

It's called "EXPERIMENTAL" :wink:
Been using it for 5,6,7 yrs?
Works blow tubed, or with the Pat Taylor wiping method, which is what is used on a 38-55, 40-65, 45-70, 45-100, long range guns & 2 38-55 lever guns. It was also used on a couple of 45-90's & 45 100's by a couple of guys in Arizona, (they aged/healthed out of the game).

I've got 90+ lbs of it, I'm good forever, the girls are good forever, grandson also.
Wanna try some? It's expensive as f.

I'm thinking about making some more :roll:

The smart thing for me to do would be to switch to paper patch :roll:
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J.B.
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Re: 33-55 cpa 44 1/2 single shot

Post by J.B. »

[quote="Shadow 4" post_id=347110 time=1714974465 user_id=6664]

The smart thing for me to do would be to switch to paper patch :roll: [/b]
[/quote]

... Possibly not.. but it would be fun to watch. I'd pay to see that :wink:
... see you in a month or so.

best regards... Gavin.
"an experimental weapon..with experimental ammunition ? ...Lets experiment "
patchbox
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Re: 33-55 cpa 44 1/2 single shot

Post by patchbox »

On the topic of .38-55 - I picked up C Sharps Hepburn in .38-55. It’s the short chamber, 2.089”. Should I get the long cases and trim? Or just buy the short cases?
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Shadow 4
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Re: 33-55 cpa 44 1/2 single shot

Post by Shadow 4 »

patchbox wrote: Sat May 11, 2024 6:51 pm On the topic of .38-55 - I picked up C Sharps Hepburn in .38-55. It’s the short chamber, 2.089”. Should I get the long cases and trim? Or just buy the short cases?
I've never used anything in any style rifle other than the standard Winchester case.
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patchbox
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Re: 33-55 cpa 44 1/2 single shot

Post by patchbox »

Thanks Shadow 4,

When you say standard are you referring to a case length of 2.080” or 2.125”? Starline sells both case lengths - I really don’t know which case length to try.

The old standard it seems was a case length of 2.125. The new chambering offered in new rifles seems to be the 2.080”. If I order the 2.125” length I can always trim it. The brass will probably get a bit shorter on the first firing anyway. Figure I can trim it to a size that just fits.

And I read the article on Starline website. So to me it seems like a good choice to go with the longer case and trim as necessary.
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