225grain 8mm?? Load Data For Old Speer Bullets.

[K98ACTION]

I have some (discontinued) 225grain 8x57mm speer bullets. Data is hard to find. And does anyone know why speer stopped making these 225,s? Was it a bad ballistic match for the mauser cartridge?

 

[dan belisle]

Speer dropped a lot of their heavy for caliber bullets (the 275 338 comes to mind). I have data for this at home, but I'm not there for a week or so. I would just use 220 gr data (should be in Sierra or Hornady manuals) and back off 10%, then work slowly up. - dan

 

[SniperSean]

damn.....220 grainers is huge!

I just loaded some 200 grainers and man did they pack a wallop!

Let me know how it goes and what your final recipe is please.

 

[big g]

Speer Load Data

Here you go;

Sectional Density .308
Ballistic Coefficient .377

Big G

 

[303carbine]

I have some (discontinued) 225grain 8x57mm speer bullets. Data is hard to find. And does anyone know why speer stopped making these 225,s? Was it a bad ballistic match for the mauser cartridge?

Hey Bill,here is what I got out of the 8mm Mauser using big bullets.
220 Sierra ----45 grains IMR 4895-- 2487 fps @ 15 from muzzle.
195 Hornady --46 grains of IMR 4895--2491 fps @15 from muzzle.
This data was safe in my rifle.........

 

[Johnn Peterson]

Did a quick check in 'Ken Waters Pet Loads' from the Handloader and there are two loads he has listed using the Speer 225gr RNSP in the 8x57 JS.
- 45gr of IMR 4064 for 2170 f/sec
- 45gr of IMR 4895 for 2245 f/sec

 

[K98ACTION]

Thanks guys. That data will get me started. Plenty to go with now. I want to use these big bullets in my mod 98 husky for moose.

 

[sunray]

Not that you need a 225 for moose, but here you go. It's from my 45th Edition Lyman book.

Powder Start Vel Max Vel
IMR3031 41.0 2169 45.0 2347
IMR4064 44.0 2183 49.0* 2380
IMR4895 41.0 2087 46.0* 2341
IMR4320 44.0 2150 49.0* 2398
IMR4350 49.0 2141 54.0* 2403
H380 46.0 2150 51.0* 2375
Rx11 41.0 2079 46.0* 2336

Accuracy Load: IMR3031 41.0 2169

'*' indicates a compressed load.