Copper tubing jacket and bullet from BTSniper 257 dies!

[mroliver77]

I wonder how thick a jacket would be if you took the 1/4" tubing up to .308. I really want the .308 set! If you made the .308 set you would prolly have a year or two worth of orders! Did I mention I want a .308 set? I have a cORBIN FULL SET FOR .22 USING LOADING PRESS. nOW A .308 set and my jacketed needs are met.
Jay

[BT Sniper]

I'm on it I plan to try 5/16th instead of the 1/4 tubbing for the 308.

[BT Sniper]

If you make a length stop on a chop saw, you can get the tube length and weight pretty close. Within .5 grains. I'm guessing that BT is doing something like that now for this prototype.

Yep that worked wll for me and within .5 grain too somtimes even closer.

I'll see what I can come up with.

[Nvrserious]

Just a quick question from a new guy.
I wanted to ask if anyone had ever tried using copper flashing (like for roofing)
To make jackets? If not that then maybe copper gutter material.

[MIBULLETS]

Instead of expanding the 1/4" tubing up, you could reduce 3/8" to make .308 bullets.

I see you mentioned 5/16" which would be perfect for the .308 , but it isn't as easy to find in some places. 1/4" and 3/8" are more standard sizes.

[buck1]

You never stop leaving me in amazement! DAM FINE WORK !.....Buck

[Southern Son]

You never stop leaving me in amazement! DAM FINE WORK !.....Buck

+1!!!!!!!!!!!!
Every time I look in this section, I see something that is amazing. Utterly amazing. I will be VERY interested in seeing how these .25 bullets shoot, and how they perform when they hit something.

[no34570]

Hang on
I've got too wipe the drool off my chin

Bloody

[BwBrown]

BT,

Received the swaged 257 swaged bullets as pictured above - they look pretty nice. While there are not enough to really work up an optimized load, I will, probably this evening, load'em up in enough shells to get two 5 shot groups. I have a killer load using 120grain slugs in my .257 Roberts. These 110 grainers should sit atop those charges nicely enough to get an idea how they'll shoot. (As if I had any doubts.)

We're supposed to get another 8-12" of spring time white rain tonight and tomorrow, so the targets might be delayed for a few days. I will post a few pictures shortly.

Bob

[BT Sniper]

Ya! I would have sent you more but I ran out of lead wire of the size necessary to make those cores with. You should have plenty of time to find good loads when you get these dies for yourself. For now I just wanted to send you a few to look at, even shoot, and check to make sure they function properly.

Good shooting.

BTSniper

[BT Sniper]

Hang on
I've got too wipe the drool off my chin

Bloody

The other night I made me a .375 die and it turned out very well. Made a nice 280 grain bullet from a .223 case. WIth that success I feel very confident I'll have your 9.3 avialble very soon.

I'll get some pics of the .375 with a new thread in the next day or two.

BT

[no34570]

The other night I made me a .375 die and it turned out very well. Made a nice 280 grain bullet from a .223 case. WIth that success I feel very confident I'll have your 9.3 avialble very soon.

I'll get some pics of the .375 with a new thread in the next day or two.

BT

Please do mate,I can't wait to see it

Good on ya

[Felderthewelder]

Bt sniper. I sent you a pm about a question I had on our dies. Can you let me know the answer please?

[BT Sniper]

I get behind on PMs very easily since I often get up to 10 or more a day. More then 500 in this year alone. I do my best to get back to everyone as soon as possible but sometimes it takes a couple days or more.

I'll be happy to answer your questions and anyone/everyone else's just as soon as I can.

Thanks

BTSniper

[Fredx10sen]

Totally amazing work there BT Sniper. I really need to get into the swaging end of reloading. Thanks for all the information. I might have to dig out the Rockchucker or the old huge Herter press stored in the shed. I just might have to build another bench though. With two bullet sizers, a case trimmer, an RCBS Jr. and a Dillon 550B mounted on the one bench there's no room. I haven't even mounted the six different Mec's because of bench space so this might just get my butt motivated to "Getter Done". Again thanks for all the information.

[Felderthewelder]

Okay. No worries then. I was just making sure you got it and were not away or something I guess. I am not in a hurry.

[BwBrown]

BT and all,
Sorry for the delay, but I wanted to bring ya'll up to speed on these bullets. I have included a few pictures.

BT sent me the samples as pictured at the beginning of this thread. When I received them, I weighed them on my RCBS digital scale, and sorted them by weight.

In the first picture, they are sorted as follows:
1st row are 109.9 gr.
2nd row are 110.0 gr.
3rd row are 110.2 gr.
4th row are 110.3 gr.

Then I dug into my stash of prepared brass. They are: primer hole uniformed, outside neck turned, trimmed to length and sorted by weight to + or - 1 grain.

Then I hand weighed each charge using a proven load with a slightly heavier commercial JSP. The loads are a bit warm by reloading manual standards, but my rifle likes them hot.

Finally they were seated using my Bonanza bench rest seating die in the Co-Ax press.

Now we're waiting for a fair weather day to poke some holes in paper.

So far, I like! Can't wait to get my hands on the dies themselves so I can really wring them out.
Bob

[BT Sniper]

Looks good there BW. I didn't realize just how long you can seat those bullets out in a 257 Roberts.

Looks like you might have one bullet left that is unloaded. Any idea how close or far you are off the lands? Obvioulsy the pressure goes up the closer we load the bullets. Just wanted to make sure the bullets are a good fit without engauging the riffling at normal OAL.

Finially got nice weather out west. Maybe it is heding your way.

Good shooting

BTSniper

[BwBrown]

Yeah, BT they do look long, but they are seated to the base of the neck.

My Remington 700 .257 was barreled (back in the mid 70's) by a 1,000 yard guy here in PA - Howard Wolf - using a McGowen medium heavy (not quite a bull barrel) weight sporter barrel. The chamber is "long throated" so I could load heavier 120 grain SP bullets just to the bottom of the neck without touching the lands.

I could have seated them a tad longer, but the throat tension is more uniform when they are seated full length of the neck.

The twist is such that the faster I can get the lead out, the tighter the groups. The hotter, the better. The rifle doesn't care, but it can get hard on brass.

Its been a lot of fun, I just have to check primers for pressure every time out.
Bob

[BT Sniper]

Sounds great! Is this your hunting rifle too?