50-90 paper?

[Gunner500]

Paper is .0001 thick and says onion skin on it when held to the light, now I don't know if I have some kind of onion skin paper in a Seth Cole box or actual SC paper, to hell with it, if it shoots, i'll use it, there must be 2000 pages of the stuff.

[Gunner500]

The KAL mould I use for the 50-90 bull barrel rifle says it's a tapered round nose, does anyone know if this means it's an elliptical nose?

Pretty much going this 50-90 deal alone as no one likes it much, that I cant understand, I did remove the mould adjustment stem and have the bump machined off at the machine shop, it is now a flat based bullet, I don't tail wrap paper patch, and even i know a bullets base must remain intact to fly right.

[Kurt]

Gunner can you post a picture of that bullet?

[Gunner500]

Kurt, just fluxed the pot, about to cast a hundred at 16 to 1, the box reads, tapered round nose, nose pour, 180 thou meplat, if that helps any, you'll have to PM me your cell number so I can shoot you a pic after casting.

Thank You,
gunner

[Gunner500]

Casting done, average weight at 16 to 1 is 780.3 grains, .494" and 1.658 long.

I really like the way this bullet looks, and think I can make it shoot, I got my 50 cal template from Buffalo Arms off the brown truck at lunch today, Wife gave me a scalpel/exacto something or another, will cut some patches and roll em on tonight.

[Gunner500]

Kurt, got a cell pic fired off to Stephen, he said it looks like a Creedmoor nose to him, i'll run with that, plenty good enough for me.

And with a 180 thou flat meplat leaving at 1300+ fps, it may double as a decent hunting bullet in 22 twist 50-90's.

[Kurt]

Gunner I think you would be a happier camper if you shorten that bullet down to 1.495" or 1.5"

[Gunner500]

Kurt, why? accuracy, recoil? recoil is not a problem in a 16lb rifle funning around the farm to 500 yard steel and 700 yard rocks.

I ran a stability factor and got 1.94, extremely stable, with maximum ballistic coefficient achieved, what am I leaving on the table? gravity and math being what it is, I always thought whipping the wind was the major problem.

Longer stable bullet, with higher b.c's leaving out in excess of 1300 fps was what I thought would be a good place to be, but I'm all ears Sir.

[Kurt]

Gunner I spent a lot of time/years behind the buttplate of the .50-2.5 with a 22 ROT and I can swage a 2" long PP bullet for it and sending a lot of lead down range of different lengths during calm Montana winds to winds 35 mph plus testing these different bullets and the 1.495-1.5 performed the best in all conditions. I also found the faster I pushed these loads in stiff winds the more wind deflections I got. Pushing the 1.5" bullet at 1285 fps using 1F Goex exp the same bullet had less drift than a bullet pushed with 3F EXP. at 1360+ fps.

You mentioned above that you would like to shoot dirty 4-5 shots with that .494" diameter unpatched PP bullet. This won't happen because it's patched to tight to bore even using Seth Cole .55 W or 55Y unless you use a cartridge seater and then all bets are off for any accuracy.
For shooting dirty you do have a few options, like a Tapered bullet seated in the case so the taper is less than bore diameter. or a PP bullet at lesser diameter with a proper alloy mix so it will obturate filling the grooves. But also you can use your .494" patched holding the patch back 3/32" back from the ogive radius and deep seated in the case so it will chamber when the throat is fouled. But this will reduce your powder load quite a but for that long bullet your using to hold stability.

All this your going have to spend some time being that rifle testing what will work to get what you want shooting dirty.
Target work that diameter is probably the best but not for repeated hunting shots with out fouling control unless you have Super Mans Thumbs

[Gunner500]

Kurt, Thanks for all that, I appreciate it, I can certainly reduce length to 1.5 inch, no problem, can easily find 1285 fps too, the rifle came with over a case each of Swiss and Goex 1F powder, I just cut a hundred patches with a template, these .494 bare bullets patched up to .502, this rifle has a 7 degree leade which will help.

I usually only seat .250 thou deep, I wont be buying some contraption or driving my bullets home with a rubber mallet and wooden dowel, both of which I've seen first hand LOL!

This rifle will be for targets only here at the house, shooting dirty is not necessary but would be nice, if I cant, i'll simply blow tube it or run a dry patch through the bore, rdncks lube keeps everything nice, soft and wet, I have a big 750gr grease groove bullet with a .338" flat meplat for hunting in my 11 pound 50-90, it will shoot dirty as much as you can stand to sit behind it.

Thanks again, and i'll know more when I get to the load shop, will write down 1.5" and 1285 fps though, I still really like that 16 to 1 for getting these long missiles launched.