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Re: My Final Grail Gun finally came home.

Posted: Wed Oct 22, 2025 2:35 pm
by Chiro1989
Try some Federal Fusions.

Re: My Final Grail Gun finally came home.

Posted: Wed Oct 22, 2025 3:09 pm
by Freezer
I don't mean to sound like a smart a$$, Did you check for copper fouling from the previous owner? Mine took a lot of cleaning before I got it to shoot well.

Re: My Final Grail Gun finally came home.

Posted: Wed Oct 22, 2025 5:18 pm
by Zee
Did not seem that bad. 🤷‍♂️

Re: My Final Grail Gun finally came home.

Posted: Wed Oct 22, 2025 9:13 pm
by JunkCollector
I know you abhor round nose bullets..... but some 100 grain ones may lead you in the right direction.

Re: My Final Grail Gun finally came home.

Posted: Wed Oct 22, 2025 9:43 pm
by Zee
Chiro1989 wrote: Wed Oct 22, 2025 2:35 pm Try some Federal Fusions.
This is the only light deer load my LGS had. That wasn’t monometal. I’ll try these and see how they group.
80gr Remington PSP
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Re: My Final Grail Gun finally came home.

Posted: Wed Oct 22, 2025 10:01 pm
by Zee
And, I have 10rnds of 85gr Sierra HPBT-GK left over from my CVA Scout Pistol. They chambers in this rifle as well. I’ll try them too.
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Re: My Final Grail Gun finally came home.

Posted: Wed Oct 22, 2025 10:02 pm
by Zee
Not to mention, two boxes of these on my shelf to try.
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Re: My Final Grail Gun finally came home.

Posted: Wed Oct 22, 2025 10:17 pm
by Chiro1989
Zee wrote: Wed Oct 22, 2025 9:43 pm
Chiro1989 wrote: Wed Oct 22, 2025 2:35 pm Try some Federal Fusions.
This is the only light deer load my LGS had. That wasn’t monometal. I’ll try these and see how they group.
80gr Remington PSP
IMG_8214.jpeg
I am sending you a box soon, I will toss some in.

Re: My Final Grail Gun finally came home.

Posted: Wed Oct 22, 2025 10:29 pm
by Zee
Chiro1989 wrote: Wed Oct 22, 2025 10:17 pm
Zee wrote: Wed Oct 22, 2025 9:43 pm
Chiro1989 wrote: Wed Oct 22, 2025 2:35 pm Try some Federal Fusions.
This is the only light deer load my LGS had. That wasn’t monometal. I’ll try these and see how they group.
80gr Remington PSP
IMG_8214.jpeg
I am sending you a box soon, I will toss some in.
You do not need. I have 3 options to play with. Much appreciated, though.

Re: My Final Grail Gun finally came home.

Posted: Thu Oct 23, 2025 11:49 am
by Chiro1989
But, but, Science!

Re: My Final Grail Gun finally came home.

Posted: Thu Oct 23, 2025 12:44 pm
by JunkCollector
Chiro1989 wrote: Thu Oct 23, 2025 11:49 am But, but, Science!
Yeah that........with 100 grain RN bullets....just do it.

Re: My Final Grail Gun finally came home.

Posted: Thu Oct 23, 2025 1:22 pm
by Zee
Chiro1989 wrote: Thu Oct 23, 2025 11:49 am But, but, Science!
Send’ em.

Re: My Final Grail Gun finally came home.

Posted: Thu Oct 23, 2025 1:23 pm
by Zee
JunkCollector wrote: Thu Oct 23, 2025 12:44 pm
Chiro1989 wrote: Thu Oct 23, 2025 11:49 am But, but, Science!
Yeah that........with 100 grain RN bullets....just do it.
Don’t have any. I don’t think.

Re: My Final Grail Gun finally came home.

Posted: Thu Oct 23, 2025 6:07 pm
by JunkCollector
I'll look around
With the longer bearing surface they would most likely perform well.

Re: My Final Grail Gun finally came home.

Posted: Thu Oct 23, 2025 6:48 pm
by CPJ 2.0
JunkCollector wrote: Thu Oct 23, 2025 6:07 pm I'll look around
With the longer bearing surface they would most likely perform well.
I’d be curious. I’d wager the RN are shorter, (length, not bearing surface) cause they ain’t pointy. Shorter equals better for a slow twist barrel.

Re: My Final Grail Gun finally came home.

Posted: Thu Oct 23, 2025 6:55 pm
by GrapeApe
I give those Sciroccos about a 75% chance of flying straight. The ones I've seen are rather long for their weight.

Weight, in and of itself, has zero to do with the twist needed to stabilize a bullet. It's all about the length. In some cases, the same bullet weight, with a boattail will be unstable, while a flat base will fly fine.
That's also why solid copper bullets require a faster twist than a cup and core.

I can't imagine the twist a solid aluminum bullet of a "standard weight" would take, considering how long it would be.

The well known greenhill formula doesn't even factor in a bullet's weight per se, only its diameter, length, specific gravity and velocity

Re: My Final Grail Gun finally came home.

Posted: Thu Oct 23, 2025 7:02 pm
by GrapeApe
Playing with an online Greenhill calculator. @ 3000FPS a 1" long .243" cup and core should be stable from a 1:11" twist. Adding 0.125" drops the called for twist to 1:9"

edited to add: the specific gravity also makes more difference than I thought. changing nothing but the SG from the standard 10.9 for a cup and core bullet to copper's 8.75 changes the required twist to 1:10. Going to Aluminum's SG of 2.7 changes the twist to 1:5"

Re: My Final Grail Gun finally came home.

Posted: Fri Oct 24, 2025 2:48 am
by Zee
GrapeApe wrote: Thu Oct 23, 2025 6:55 pm I give those Sciroccos about a 75% chance of flying straight. The ones I've seen are rather long for their weight.
I have the same doubts. But, three rounds for science won’t hurt.
And if they happen to work, I have two boxes on the shelf. Would like to see their performance on game.

Re: My Final Grail Gun finally came home.

Posted: Fri Oct 24, 2025 4:09 am
by GrapeApe
Zee wrote: Fri Oct 24, 2025 2:48 am
GrapeApe wrote: Thu Oct 23, 2025 6:55 pm I give those Sciroccos about a 75% chance of flying straight. The ones I've seen are rather long for their weight.
I have the same doubts. But, three rounds for science won’t hurt.
And if they happen to work, I have two boxes on the shelf. Would like to see their performance on game.
Nope it shouldn't hurt a bit ;)

Re: My Final Grail Gun finally came home.

Posted: Fri Oct 24, 2025 4:27 am
by CPJ 2.0
GrapeApe wrote: Fri Oct 24, 2025 4:09 am
Zee wrote: Fri Oct 24, 2025 2:48 am
GrapeApe wrote: Thu Oct 23, 2025 6:55 pm I give those Sciroccos about a 75% chance of flying straight. The ones I've seen are rather long for their weight.
I have the same doubts. But, three rounds for science won’t hurt.
And if they happen to work, I have two boxes on the shelf. Would like to see their performance on game.
Nope it shouldn't hurt a bit ;)
Unless you’re a deer or pig. Then it’s gonna hurt.

Re: My Final Grail Gun finally came home.

Posted: Sat Oct 25, 2025 10:29 pm
by Elk Creek
Old 99’s can still get the job done. My Dad shot this doe today with his 99 with tang sights……

Re: My Final Grail Gun finally came home.

Posted: Sun Oct 26, 2025 4:33 am
by Wambli Ska
Nice shot! That one didn’t feel a thing.

Re: My Final Grail Gun finally came home.

Posted: Sun Oct 26, 2025 12:47 pm
by Diver43
Great shot Dad. What caliber?

Re: My Final Grail Gun finally came home.

Posted: Sun Oct 26, 2025 2:29 pm
by Zee
Nicely done! Beautiful rifle.

Re: My Final Grail Gun finally came home.

Posted: Sun Oct 26, 2025 2:44 pm
by Elk Creek
Diver43 wrote: Sun Oct 26, 2025 12:47 pm Great shot Dad. What caliber?
Dads 99 is in 300 SAV, oh at 100 yards.