Update on my 577,the barrel is on the action,the muzzle break is machined,hopefully if all goes well he will have it ready for the first test firing in mid March!!
While I am on the subject any advice on reduced loads for cast bullets would be helpful.

Hey Diesel_Dude - good to hear the cannon is nearing completion; I got my 500A2 dies today!!!! My project is several months behind yours, keep us posted on results - have you found any more volunteers to fire the beast? KMule

Wayne Doudna does 577 cast bullets in 650 grain weight for around $10 per 100.Let me know if you're interested and I'll put you in touch with him.

Brian.

... Brian - are those bullets with gas checks? Thanks - KMule

Brian,
You've got mail
jeffe

Diesel person,

What caliber is this? 577 nitro?

What action are you using?

No pictures posted? This forum requires some pictures of your big bore cannon to prove it. Please keep us posted. Thanks.

Ming- forgot to take my camera with me! I will definalty post pictures here within the nest couple of weeks!
500 grs- itis a 577 3" nitro express,it is being built on a Ruger #1 action!

Brian- I got in touch with Wayne this am,you had already given me his # thanks once again,ordred 200 bullets from him he told me to tell you Hi!
Mac-should be able to have a few practice sessions before taking it out hunting!

Mule,
Beats me.Wayne does a little bit of everything.Shoot me an e-mail and I'll give you his phone # and you two can chat.

Diesel-Dude,
Glad you got some bullets from Wayne.Great guy and an even greater product.

Brian.

I would start out with 115 to 120 grains Re 15 with a 750 grainer and work up.

it has been my experience that the 577 requires 110 of rl 15, and a filler, in bertram brass...

i dunno for cast,
jeffe

Yeah, but this is a Ruger #1 so he can fill the case up and avoid the filler.

I take no position with regard to the merits of filler. I use it and I believe in it, at least for working loads up in large cases. After you know what powder produces optimum ballistics and fills up the case, you won't need filler.

IMR 5010 burns like charcoal, produces feeble ballistics, and is very bulky. Except for the lack of load data for most rounds, the stuff might be perfect for popgun loads out of double rifles.

Imagine: I take my necked up (to .510) .505 Gibbs case and pour 145 grains of surplus IMR 5010 in, top it with a 700 gr. M2 ball bullet, and I get a tight (hear one or two grains split as I seat the bullet)compressed load, and only 2075 fps. Kind of like one of those kiddie pneumatic cork guns....

Brian M - thanks, got address from Diesel_Dude = back to the top with this topic --- Mingo, I will send pix of the 577 on the #1 as soon as DD sends to me, should be this weekend - he is twitching like a teenager on his first date , the first full house load should calm him !! Yes, I am one of the "volunteers" for the rifle KMule

KMuleinAK,

Look forward to seeing the picture. Yeah the No. 1 is a violent SOB with a big bore cartridge. The 577 with a full house load will definitely get somebody's attention, especially in a No. 1. Have fun and be safe guys!