I've been loading 88grs of RL15 under a 500 Hornady. I got this load from the reloading pages here. The load is for a 450 Vincent but the two are twins. I've got no signs of pressure at all. It shoots great and velocity is 2397fps over my cronograph. Brass is Norma 404J. Primers are 215MM.
Pierre over at BBSA says that this load should be a very high pressure load.
I'm confused and unsure as to my load now. Does anyone here load for this round??

whats the case length????? wHAT WAS YOUR STARTING LOAD ???

gumboot458, the case length is 2.5" OAL is 3.450 to the rifleing, seated to 3.360
That was my first test load. It worked so well, 25 rounds tested, that i didn't think about trying anything else.

W; I found some loads for you from original article by Lott. Hope it helps.

Alliant Rel-7
73.0gr 2,200fps 22.5†Guns&Ammo April 82

Hodgdon BLC-2
80.0gr 2,035fps 22.5†Guns&Ammo April 82

Hodgdon H-4895
78.0gr 2,175fps 22.5†Guns&Ammo April 82

IMR-4350
80.0gr 2,150fps 22.5†Guns&Ammo April 82

IMR-4064
78.0gr 2,050fps 22.5†Guns&Ammo April 82

IMR-3031
75.0gr 2,100fps 22.5†Guns&Ammo April 82

HHHMMMMM,thanks Pierre. I think we got some work (testing) to do.

Oh hell, what a great excuse to shoot more! LMAO

i have had much better results with h335 than the other slower powders, and better with i4895 than h


i never took rl 15 to that heavy a load.. might need to try, but h335 works great for me

jeffeosso, thanks for the help..time to experiment with some more powders. I'm going to back my load off to 82gr and work up and see what the cronograph tells me.

.......Is HP White Laboratories still in bussiness .....88 gr of RL 15 seems pretty strong

gumboot458...i'm going to back it off to 82gr and work up some...maybe try some h335 or???

.........If RL 15 works , and it seems to ,,then so would 4064 , and probably 4320 ...

Well, i tested some loads while working at the range. 82gr of RL15 gave me 2250fps with the 500gr Hornady. It's much more pleasent to shoot and still shoots really well.

Well, your velocities match the Vincent Short at both loads. So what's the problem, if you see no signs of high pressure?

Will, no problem, just beening carefull. I had no signs of pressure at all at 88gr but 82gr is more fun to shoot. It's nice to know it'll go to that level if needed. I'd like to get some 550gr woodleigh's and try them.

....Ol Bull .. You might try taking 1 new brass and see how many times you can reload it with the 88 gr load .... From what I understand if you get 6 firings or more then your pressures are fine ..??
No doubt 2200 fps would be more fun to shoot ....
2400 fps is what the 460 Short A-Sq. gets btw, but you probably get 1 more round in the mag ...

It'll hold 4 down + 1.. ..and thats a good idea, i'll take a case and see how long it lasts. I'll keep track of measurements and see! Thanks Gumboot458
On another note i'm thinkin about adding 1LB to it and bring it up to 10.5lbs..That'll help alot

The closest powder to RL-15 is 4350....

quote:

Originally posted by Atkinson:
The closest powder to RL-15 is 4350....

.

You mean RL 19 don,t you .. being close to 4350.. RL 15 is very close to IMR 4320 and 4064 .... ???????????????????????

I might try some IMR4320 just to see how it does. But i sure am happy with RL15
How about some Norma 203B???...anyone tried that?

I did try some Varget...82gr gave me 2200fps with the 500gr Hornady

Ray, you should come and shoot with us..