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.450 G&A Short Magnum

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29 October 2003, 09:51
Nickudu
.450 G&A Short Magnum
Removed. Email for zipfile.

[ 11-02-2003, 19:49: Message edited by: Nickudu ]
29 October 2003, 10:17
jeffeosso
Nick,
if you posted these once every 2 months, I'lf be flat broke, with a NOTHER guncase full of big bores!!

thanks
jeffe
29 October 2003, 10:24
Shadow
Nickudu,

Most excellent, thanks for posting.

Bob
29 October 2003, 10:25
Nickudu
I am quite sensitive to that fact Jeffe, so I'm hurrying the pace. Note the relationship of RL-7 / IMR-4320, when driving heavy bullets with a marginal powder space. I found the same to be so in regard to the Lott, especially with the monolithic Barnes.

IMO, "THIS" is what the .458 Winchester Magnum should have been, not the Lott.
A standard action, utilitarian big bore. I've seen 3 or 5 of these that gave 2,300 fps. with 24"+ barrels.

[ 10-29-2003, 01:38: Message edited by: Nickudu ]
29 October 2003, 11:03
Shadow
Nick,

Excellent point, on RL-7 vs 4320. I used RL 7 in both, a very heavy loaded Ruger 1 in 45-70, and again in a 458 Winny Ruger 77 for 2125 FPS with 500 grain Hornaday Soft.

Also little known is that RL-15 has almost the same burn rate as IMR 4320. I've worked up loads with RL-15 using 4320 starting load data as a beginning point. Also, RL-15 is "almost" identical to the old Norma 203. I have again used RL-15 in cases where Norma 203 was listed as "best" and there was a time that N203 was unobtainable.

Regards,

Bob
29 October 2003, 12:25
jeffeosso
RL 7 "small bore rifle powder" kicks ASS in 458 win.

Thanks for doign it quick, Nick... I would have like 100#of actions, 180 of barrels, and 3 walnut trees, all waiting for my time!!

jeffe
30 October 2003, 07:51
DB Bill
Have any of you found RL 7 to be temperature sensitive?
30 October 2003, 08:49
jeffeosso
it really seems to get upset at about 500F when the primer goes!!!

just kinding
jeffe
31 October 2003, 06:18
Nickudu
DB Bill,
It was 115 degrees for most of my 14 days in the Valley, October '99. The Lott, with the RL-7 loads, gave no noticable indication of increased pressure. I had mic'd the fired casings, upon arriving home, with just this thought in mind.
31 October 2003, 07:26
KMuleinAK
quote:
Originally posted by DB Bill:
Have any of you found RL 7 to be temperature sensitive?

DB Bill - I use RL7 in a 50 alaskan lever gun and yes, I experienced higher pressure this past summer; normal Anchorage area temps in the summer are in the 60-70F range, I went to the shooting range on a 80F day and left some rounds on the wooden bench top (in the sun) - when I fired them, it was very obvious that a significant pressure increase had taken place (verified by chronograph) - case heads were marked with bolt face, extraction was a bit "stickier" than normal - these loads were at max before the warm sun hit them, too hot after external heat application. Still, RE7 works best for me in this cartridge / rifle - KMule
31 October 2003, 09:02
Nickudu
Left in the sun, any powder will do likewise.