62 cal 2 shot Load Testing

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BS

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Barrel is a 32" Rice .62 with a 104 twist Forsyth rifling.
62CrownW.jpg

1st shot is with a patched .620 PRB, using .015 Duct with 50/50 wiper fluid and simple green.
2nd shot is with a .610 hard ball [reclaimed lead] using a tapered paper cartridge. [SPEED-RELOADING]
62-135-PaperW.jpg


62-135FF-.620-1w.jpg

Day2
62-135FF-.620-2w.jpg

Day3
62-135FF-.620-3w.jpg

Sorry for the different targets and scale, but this is a first and second shot comparison.

Target Overlay
62-135FF-.620-1,2,3W.jpg
 
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necchi

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Well, the PRB 620 looks better.
Change up the lube combo and mess with the load charge a bit and I'll bet you'll start getting some really tight groups.
Thanks for sharing, ;)
p.s., what is,, "using .015 Duct", ?
 

excess650

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".015 Duct" is drill cloth from Joann Fabric, found in same location as the cotton duck, but was simply marked "utility cloth" on the end of the bolt
 

BS

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The 32" barrel is 1.1/8" tapering to 1".

The butt plate is an Early Wide. 2.1/8" x 5.1/4".

135FF is mild compared to some of the heavier tried.

This is a hunting, not a target rifle.
 

BS

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Best way to describe recoil is that it is a modern 20 gage with slugs.
 

bubba.50

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If I'm understanding correctly you fire the duct load and then the paper load back to back at the same target? Have you tried reversing the order?
 

Rudall

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What are you trying to show? Or test? Or prove?
And why only two shots each day?
 

BS

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Patched round ball, then a paper cartridge, 8 second reload!

Trying to simulate a hunting situation.

Many years ago I may have tested paper first, but not lately.

This might help:

 

bubba.50

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well, looks like they're always within about an inch of each other which is likely about as good as it'd be if ya tried two identical loads back-to--back.
 

TCMonts

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Have you tried back to back paper cartridges? Just to keep things simple and more consistent.
 

BS

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When hunting, I use a patched round ball.

Fast reloads is what the tapered paper cartridge is for.

You can shoot 3 or 4 of them before they start loading hard.

Accuracy is good. It has been a while since I shot a bunch of them in a row.
 

pamtnman

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Have you tried back to back paper cartridges? Just to keep things simple and more consistent.
That first shot is the most important. So he is placing a tight load for maximum accuracy. Need be, he’s practicing for the follow up shot with a load that is much less arm-wrenching. I myself practice for six reloads, because the deer here are significantly smaller than the broad side of a barn.
 

Jay Templin

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Looking at the link you posted, the tapered cartridge looks like a lot more fuss for no real benefit over a traditional straight cartridge, at least as far as I can see.
Jay
 

BS

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Jay, the only advantage is the taper, it helps with the ease of stuffing it down the hole.
 

pamtnman

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Why are you using different balls?
Because a smaller diameter ball is easier to load on the reload. The larger diameter ball goes in first because it will give best accuracy and highest weight/ energy.
 

BS

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As a way to use up scrap hard lead, and the second shot may need more penetration than expansion.

You don't have to, but you cannot use a .620 with a full wrap of paper, won't fit, so a smaller diameter is used.

I could use a smaller ball with thicker patching and use the same ball, but the smaller ball doesn't group as well.
 

BS

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Because a smaller diameter ball is easier to load on the reload. The larger diameter ball goes in first because it will give best accuracy and highest weight/ energy.
Sort of, the smaller ball needs a tight fit to work best.

You have to adjust the wraps of paper to get a fit that takes some thumb pressure to start into the bore.

This is something that you have to try and adjust, if a looser working paper cartridge groups with your barrel, use it.
 
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