505 Gibbs load help needed

matt85

AH legend
Joined
Jan 7, 2014
Messages
2,666
Reaction score
1,989
Location
WA, USA
Media
28
Hunted
USA, South Africa, and Namibia
as my AHR 505 Gibbs gets closer to being completed im beginning to put together supplies to shoot the puppy.

my goal is to fire a 570gr Swift A-frame at around 2200fps from a 24" barrel.

can you guys suggest a powder load that would work for this?

my thoughts are to use RL 25 or even IMR 7828 but its hard to guess the amount since Swift's manual stops at around 2080fps using RL 25 and around 2030fps using IMR 7828 (using a 26" barrel). both loads in the Swift manual claim their max load only fills around 80-85% of the case so i still have some room for more powder.

safety advisor: before i get a safety lecture please keep in mind the pressure maximums in reloading manuals are based off the original cordite pressures and modern guns using modern powders can EASILY exceed this performance without any pressure issues. having said that, caution is still used when exceeding maximum pressures.

-Matt
 
Last edited by a moderator:

Panielsen

AH enthusiast
Joined
Nov 2, 2011
Messages
286
Reaction score
247
Location
Odessa, TX
Media
15
Hunting reports
Africa
1
Member of
Dallas Safari Club, NRA, SCI
Hunted
United States, Limpopo South Africa
Just referred to my Hornady 9th Edition, and I believe you have exceeded the limits of their knowledge! Lol I will check my Barnes in the morning as it goes to larger calibers, but is unfortunately in my office. Good luck, and can't wait to read what you decided on as I am very interested in that caliber.
 

matt85

AH legend
Joined
Jan 7, 2014
Messages
2,666
Reaction score
1,989
Location
WA, USA
Media
28
Hunted
USA, South Africa, and Namibia
thanks, but i already have the Barnes load data and they only talk about their 525gr TSX/solid. my friend ActionBob likes to use the 525gr TSX in his 505 Gibbs and recently took a cape buffalo with it.

-matt
 

Panielsen

AH enthusiast
Joined
Nov 2, 2011
Messages
286
Reaction score
247
Location
Odessa, TX
Media
15
Hunting reports
Africa
1
Member of
Dallas Safari Club, NRA, SCI
Hunted
United States, Limpopo South Africa
10/4.. I was thinking bullet weight/charge/etc, not necessarily Barnes bullets. All the same, let me know what you find out as I really am interested in that cartridge.
 

larry4831

AH fanatic
Joined
May 26, 2015
Messages
529
Reaction score
362
Media
5
Member of
NRA
art Alphans book any shot you want lists h4831, IMR 7828 and reloader 22. however it only shows a 525 grain bullet
 

KWALATA SAFARIS

Sponsor
Since 2021
AH legend
Joined
Dec 8, 2010
Messages
2,279
Reaction score
1,197
Location
South Africa
Website
kwalatasafaris.co.za
Media
120
Hunting reports
Africa
3
Member of
SCI, PHASA, IPHA
Hunted
South Africa, Zimbabwe, Mozambique, Botswana, Tanzania
Matt I'll be in Vegas in Feb I'll be more than happy to help you load it in my gun case! ;)
 

zephyr

AH enthusiast
Joined
Feb 27, 2011
Messages
319
Reaction score
295
Location
Vermont
Media
9
Hunting reports
Africa
2
Give swift a call they have folks on hand to answer your questions
 

Bullthrower338

AH legend
Joined
Sep 20, 2014
Messages
4,481
Reaction score
10,365
Location
Houston, Texas and Alder, MT
Media
180
Hunting reports
Africa
2
USA/Canada
1
Australia/NZ
2
Member of
Life Member Rocky Mountain Elk Foundation, NRA, Huntin' Fool, DSC and Pope and Young Club
Hunted
USA, Mexico, Canada, RSA, Australia NT, Zimbabwe
Matt,
What press are you going to use to load the Gibbs?
 

matt85

AH legend
Joined
Jan 7, 2014
Messages
2,666
Reaction score
1,989
Location
WA, USA
Media
28
Hunted
USA, South Africa, and Namibia
Matt,
What press are you going to use to load the Gibbs?

i use a Lee cast single stage press for the BIG cartridges, its just a Lee challenger on steroids. it has worked great for both the 505 Gibbs and the 585 HE.

Matt I'll be in Vegas in Feb I'll be more than happy to help you load it in my gun case! ;)

Jaco, ill give it some thought... :K Moon:

-matt
 

Forum statistics

Threads
36,741
Messages
696,620
Members
64,655
Latest member
chrisgagliardo
 

 

 

Latest posts

Latest profile posts

Rifle57 wrote on Rimshot's profile.
I bought some bullets from Rimshot and he is good to trade with!
Greetings all! I've been a hunter for 50 years, but only now planning a trip to Africa. I was fortunate and successfully bid on a couple hunts for plains game in SA later this year and next. Also a rare Native Texas (5th generation) and USMC Vet. Hunt safe y'all!
uujm wrote on trg's profile.
I am looking for a Safari Express. Was yours made in New Haven or South Carolina? Any other details you can give me? I am very motivated to buy.
pimes wrote on flatwater bill's profile.
Hello Bill - can you tell me that landowner/ranch/outfitter - Thank you!
Pete0905 wrote on damundsen87's profile.
Hello
Is the Khales 1-6 still for sale?
Thanks
Josh
 
Top