Printable View
Attachment 201555
As I was saying I had previously worked up my loads from the 'trapdoor' category and ventured into the mid range. The H4198 being closest to AR2207. That goes out to 46gn but as you know, this cal is a mongrel for NOT showing pressure many signs.
This next one is from the 1984 Lyman RL handbook (which a kind soul gave me recently) perfect for this stuff as it has cast loads in it. Keeping in mind these polymer jacket or pc bullets aren't to be found in reloading manuals. I take extra precautions when testing these. But there's no point shooting cowboy loads imo just because the break barrel falls into a 'grey zone'. But to be safer I'm using cci200 primers and the recoil I'm currently on is medium (it's a bastard if you go too high anyway)
My cbe mould knocks em out at 430gn using my bhn mix of 13-14 with no check (the checks only being needed to clean the barrel). The beauty of powdercoating is that it likes to fill any gap so you can shoot any profile unchecked if you like.
Attachment 201556
H110 is the powder I don't think has much use in a bergara OR a lever. There are guys using it but that's gotta be on a knife edge no? Like these home coated pc bullets are wildly variable in nose shape compared to copper jackets. You could jamb into the lands very very easily and then cause a pressure spike..
H110 is the one powder you DO NOT experiment with....stick to factory loads...and there are very few lower loads using it,its near full case or nothing..... it is what it is and you just have to live with it.
2208 seems to be working ok for me...but for lighter power loads the black smelly stuff is hard to beat.
@Micky Duck here are the fairly un scientific results
The solid Black Widow bullets are 403 grains
The M6x6mm hollow pointed ones are 387 grains
Attachment 201564
They shot to the exact same point as the solid
50m group from standing hasty rest with basic tang rear and globe front with a post insert
Attachment 201565
So I have drifted the globe a little to the right which should bring the impact to the left
And I have dropped the rear staff half a turn to bring down the group just a little
Will shoot again this afternoon and if it just above the bull then it's locked in and ready to go hunting with
brilliant stuff.....now if you make the hole a bit deeper.....and can speed up the load.....look out animals LOL.
had another good read up of N.F knowledgebase on the 44 magnum last night and the increased velocity thing pops up again...its there in the .45/70 blurb too.... just a little more speed can it seems make quite a big difference .....
Yes 10mm deep would be goodQuote:
Originally Posted by Micky Duck
But the M6 ball end mill isn't the ideal cutter for the job
I will look for alternatives
you garden variety drill bits work fine...if I can do it with cordless drill,and not fluff it up too much,you will be far better than I by using your set up....if you used your sharpening skills...of just chucked bit over the bench grinder and made the cutty/pointy part of bit longer/shallower angle,you could have a good deep hollow point with progressively more meat left on the outside to slow the mushrooming......
10mm deep with a normal drill bit and it's down to 355 grains and it gets me into some faster powder options also
you just got to be stoked with that!!!!!!
tonights effort at zeroing mine was ....problimatic with duplex loads....as in spayed around like a mad womans shit.....
will try again another day with my 2208 loads and some straight BP.
HAD ANOTHER PRIMER FAIL TO IGNITE...wondering if the BP is corroding them??? its the third one thats done it.
Well I actually found that in the lathe at a decent speed the drill bit was pretty well self centering and they came out very nicely
Now I need to test expansion into damp sawdust and recover them to see if its even worth the effort
405 grain solid
385 6x6mm hollow
355 6x10mm hollow
I have a mountain of wet sawdust so that will be my best option for fast results
I do have a bullet baffle box but it was built and used to test sub sonic bullet expansion with 240 grain 44 bullets and I think the 45-70 super sonic would blow it to pieces
chuck a couple of filled water bottles in front of it,to slow things down a tad....as long as its the same for each all will be equal.
Attachment 201597got these two from a nice pig last year .
Attachment 201598the same two, going about 1250 fps
thats the gould mould unless Im mistaken.......
Yep sure is , love it
Found this one just sitting on the clay (the miracle find)
That coating is tough eh. Even the rifling didn't remove it
Attachment 201705
Attachment 201706
Well a mountain of wet sawdust is a pretty brutal test medium
The 403 grain flat point opened just a little and still weighs 397 grains
And the m6x10mm hollow point one went from 355 grains to 250 grains
The shank did expand nicely but the nose is completely gone
Attachment 201728
Attachment 201729
So I'm not thinking there's any particular benefit from mortifying the basic bullets
But it's fun to experiment with
Modifying it mortifying you choose !
I would say the modification of 2nd one was just about perfect,because you have managed to transpher some of the energy...it has to go somewhere....it must have slowed down somewhat quicker than the other..... now to find a real test of them..wallabies are good LOL.....
@Micky Duck Yes but maybe a slightly smaller diameter hole. 4mm rather than 6mm might make a differenceQuote:
Originally Posted by Micky Duck
The 6mm hole was nearly all of the flat area of the nose so might have been excessive
But it does prove the point that the hard cast is very hard and might need just a little encouragement to expand
Then entirely suitable for wallabies and fallow deer
but at one point it would have been MORE than 6mm...eg when mushroom was ongoing...... before the petals (if you like) broke off....
Yes I guess soQuote:
Originally Posted by Micky Duck
There would be a huge expansion zone somewhere inside the animal and then the complete penetration of what ever remains of the shank
All the bullets shot to the exact same point of aim with the same powder load, so its horses for courses i guess
Solids for reds
Small hollow point for fallow
Big hollow point for wallabies
You could soften up your lead mix a bit a slow down your speed and it may be a lot better ,I did some experiments with my Gould butter today put up a picture.
Attachment 201741I put a bb from my 20g in the end and with 10 gn of trail boss caught it in the 5th 3L milk bottle at 20 yards , tried it again at 30 yards and it went through 7 bottles and I did not catch it , would say it did not open , would be easy to work out powder charge V distance for it to open and not lose the top of the hollow point , give or take a bit .
13 or 14 should be good for most uses yeah?Quote:
Originally Posted by Gur1
Got out and tested the clear coat pc bullets that I gave a minor to medium crimp to. Also used a .457" sizer, 2 minor coats of powder, gas check and .459" sizer to finish.
Very happy with the results. Btw the checks help put a .459" bullet in a .454" neck without bellmouthing it at all. No loss of coat either so that alone is worth the gas check imo.
I've just got a old chrony but it's results were average and workable to leave as is (for 200y plinking)
50m overcast
1.1749
2.1797
3.1742 results 1" high.
100m bright sunshine
4.Error (me)
5.1920
6.1976 results .925" low
200m also bright sunshine
7.error (target too high)
8.1843
9.1935 results 15" drop. The calcs gave 1824fts, 105y zero and a bc of .278 G1
Attachment 202790
Attachment 202791
Attachment 202792
The 438gn did great out to 100m and its average over 9 shots plus the verified fall of shot gave me 1720fts , a zero of 65y and a bc of roughly .2 G1
Attachment 202797
The vertical string was 5 white 350gn with firm crimps shot as fast as I could load them. I guess they started at the top and dropped fast as the barrel went hotter. The test over all was mainly to see that the coatings worked fine and pressure was ok. I'll do some 5 shot groups to confirm but I just wanted something to feed into the app for now
The vert string would suggest a bedding issue or slightly too much powderQuote:
Originally Posted by T.FOYE
The vert string would suggest a bedding issue or slightly too much powderQuote:
Originally Posted by T.FOYE
