Seller and bellot and 460

[snakereaper]

Have any of yall had any issues with s&b ammo.i have a s&w 460 precision center with the 14 in barrel. Here the issues I had i shot a few rounds of the 260 grain threw it no issues, then a couple rounds into box I noticed what felt like a couple hotter rounds and something small hit me in face almost like unburnt pounder. So I stopped shooting and opened the cylinder. Ther was 2 or 3 flat primers and one with a punched primer. I had just shot some hornady no issues then I shot some my hand loads which are no where near max no issues. So I'm thinking it is not a issues with gun. Since this is first time I got this gun out and shot it. Braind new. Have anybody had this prob with any factory ammo.

[jgt]

Check your Hornady 44 magnum fired cases to see if they are shorter than the S&B fired cases. If the Hornady cases are shorter, that could be the source of the problem. In some Hornady ammunition they use a polymer tipped bullet so they shorten the case length to make up for that tip. If that is what happened, you must be diligent to clean the cylinder after shooting them before you go to a standard length round because the case mouth does not have room to expand enough to avoid high pressure with the cylinder fouling from the shorter round.

[bula]

I've only tried S&B in 9mm and 40 S&W. No issues . Does sound like that ammo is the issue. What size, type primer is the 460 supposed to use ? Then wondering what primer S&B used. 

[bradshaw]

Oct 31, 2021 6:58:17 GMT -5 snakereaper said:

Have any of yall had any issues with s&b ammo.i have a s&w 460 precision center with the 14 in barrel. Here the issues I had i shot a few rounds of the 260 grain threw it no issues, then a couple rounds into box I noticed what felt like a couple hotter rounds and something small hit me in face almost like unburnt pounder. So I stopped shooting and opened the cylinder. Ther was 2 or 3 flat primers and one with a punched primer. I had just shot some hornady no issues then I shot some my hand loads which are no where near max no issues. So I'm thinking it is not a issues with gun. Since this is first time I got this gun out and shot it. Braind new. Have anybody had this prob with any factory ammo.

*****

Limited to description provided, the ammo smells tainted.... “shot a few rounds... no issues... then a couple hotter rounds.... 2 or 3 flat primers.... one... punched primer.”

Ominous. I’d contact Sellier & Bellot. The .460 S&W Magnum is Smith & Wesson’s move to snatch the velocity crown from Dick Casull’s .454 Casull, and to show the X-frame S&W has the strength to play in this league. The .454 Casull is a rocket fuel revolver round, loaded specifically for the Casull-designed Freedom Arms Model 83. A revolver round loaded to rock 60,000 psi requires a 84,000 psi proof round to satisfy SAAMI (Sporting Arms & Ammunition Manufacturers Institute) testing. Standard pressure testing equipment goes haywire around 90,000 psi. which heaps a new challenge on pressure testing.

From a practical performance perspective, the .454 Casull is a bit of a freak. Which makes the one-upmanship .460 S&W Mag even more of a freak. I’ve seen factory ammo which didn’t work out as smooth as planned. Therefore would not shoot it. As jgt advises, check the cylinder CHAMBER LEADES----for length and for fowling----to insure the case mouth opens flat to release the bullet without pinching bullet. Although, I doubt this is the cause. Rather suspect this particular load treads the edge.
David Bradshaw

[x101airborne]

S&B is European made so their pressure equipment is different. S&B ammo is known for being hotter than American ammo. I chrono'd their 30-06 150 grain ammo in my 26 inch 1909 Argentine custom rifle and I am getting almost 300 Winchester Magnum velocities! I believe the use of different standards (PSI vs. CUP), to which there is no direct correlation is the issue. I also suspect the ammo to be the problem. If you have a chrony, check it out after you have cleaned your cylinder to rule that out as a possibility.

The primers in my rifle ammunition are certainly flattened after being fired but I have never had a completely flattened or pierced primer out of it.

[snakereaper]

K thanks guys I contacted them . They wanted picks of there ammo and of the hornady primers and my handhold primers and make and mod of gun and all. So we will see where we go from here. If I knowed how to post pics I would put some one here. You could defiantly tell the difference in recoil of the hotter ones even with that big tank brake and 14 in barrel on the beast.

[x101airborne]

Haha! Good freakin luck on the pictures. I started a thread asking for "how to's" posting pictures and I STILL haven't gotten it right.

[bamagreg]

I've shot a fair amount of it in my 460 (sold it) and my brother's. Seemed to shoot ok. What I did notice is that the brass is very hard/brittle and would stick in the expander die if I didn't lube the inside of the case mouth. Also noticed the rims were not very consistent dia. and would stick in the shell holder frequently. I got frustrated and threw all of the brass in the trash can.