44 mag 300gr load?

Be careful -- low-volume ratio loads can detonate. Mangement not responsible for load data. Use at your own risk.

Moderators: mpallett, bakerjw

Post Reply
cokel
New Member
Posts: 2
Joined: Mon Jan 20, 2014 10:49 pm

44 mag 300gr load?

Post by cokel »

I've recently received my Ruger 77/44 from John Tibbits and have been reading through all 28 pages on this forum. I've found quite a bit of info and loads for 240 gr xtp's but not so much for 300 gr xtp's. Is anyone using the 300gr xtp's with success. I was thinking of working up a load with either Trail Boss or Unique as I have both of these powders already but would like some input from others on this forum.
User avatar
Solothurn
Silent But Deadly
Posts: 159
Joined: Mon Jul 27, 2009 9:35 pm
Location: Alabama

Re: 44 mag 300gr load?

Post by Solothurn »

SRT Bison with Douglas 1-11"-twist barrel:

300 gr. XTP JHP 1.600” OAL 17.2gr. IMR 4227 958 fps

300 gr. XTP JHP 1.600” OAL 8.8gr. HP-38 988 fps
r
Silent Operator
Posts: 74
Joined: Thu Jan 12, 2006 7:47 pm

Re: 44 mag 300gr load?

Post by r »

300 xtp, 300 sierra, 300 nosler all in silent destroyer with 8.9 grains unique runs right around 1060 and below the sonic crack threshold--I have e-mailed with denall and he uses cast in his personal 77/44 (since these come apart). have used rcbs 300 cast with & without gas checks at 7.8--7.9 grains unique also---lee 310 cast at 7.4 grains or more blows the mag out every shot(7.2 grains is recommended max load-for a handgun)---hornady also has a 265 rn sp jacketed that does well at 9.1 grains however--since Connecticut they have evaporated(#4305)--only see single boxes here or there
cokel
New Member
Posts: 2
Joined: Mon Jan 20, 2014 10:49 pm

Re: 44 mag 300gr load?

Post by cokel »

Finally able to get out and test a few loads. Shooting thru a Ruger 77/44 with a Shillen 1/16 twist integrally suppressed barrel by John Tibbits Jr.
60 degrees and very humid
OAL 1.61
barrel cleaned after every 3 shot group
300 Hornady XTP
50 yards from bench rest with sand bags
3 shot groups

Unique 8.3gr 1.4" group 1010 fps avg.
Unique 8.5gr 1.5" group 1026fps avg.
Unique 8.8gr 4.2" group 1050fps avg. "surprising"

Winchester 296 14.6gr 0.5" group "best in the group, all three holes touching"
Winchester 296 14.9gr 2.1" group

IMR 4227 17.6gr 1.1" group-sonic crack
IMR 4227 18gr 1.3" group-sonic crack

chrony battery died after first 9 shots no result on velocity of W296 or IMR 4227. W296 loads were subsonic however IMR 4227 loads went supersonic . More testing will be done with IMR 4227 and W296 with chronograph.
r
Silent Operator
Posts: 74
Joined: Thu Jan 12, 2006 7:47 pm

Re: 44 mag 300gr load?

Post by r »

those 296 loads look interesting. will try them with some h110 and see what I get.
User avatar
Garrett
Silent But Deadly
Posts: 640
Joined: Thu Oct 12, 2006 8:34 pm
Location: Western Michigan

Re: 44 mag 300gr load?

Post by Garrett »

cokel wrote: Winchester 296 14.6gr 0.5" group "best in the group, all three holes touching"
Winchester 296 14.9gr 2.1" group
I'd be interested to see what your chrono results are. I'm thinking you are going to be running on the slow side.

I load 16.5 gr. of W296/H110, and get 1016 fps. with a 7.5" pistol (not revolver) barrel.
Handloader
Member
Posts: 38
Joined: Wed Aug 05, 2009 1:37 pm

Re: 44 mag 300gr load?

Post by Handloader »

Thought I would share this with you all,

I had the chance to get out the Ruger (John's Ruger 77/44 Suppressed from Texas), and do some longer testing with it.

Temp was 74 degrees at 830 feet elevation, 76% humidity, Velocity at 950fps

Load: 18grains IMR 4227, Hornady 300g XTP, Remington Brass, Winchester Large Pistol Primer

Zero at 100yards,
Verified Data:

50 yards + 8.5 MOA
100 yards 0 MOA
147 yards -9 MOA (broke clay pidgeons, and milk jugs filled with water)
216 yards -23.5 MOA (12 x 12 inch steel)
300 Yards -42.5 MOA (12x12 inch steel)
400 Yards could not see the bullet impact anywhere at -64 MOA. I tried to spin the turrent up and down (+/- 10 MOA) and could not hit a man sized steel target. I think the bullet destabilizes after somewhere after 300 yards (just a guess).

This was from an older post of mine...The Load will give an occasional Sonic crack when cold out in non-Remington brass.
This gives me a pretty consistent 1.5in group at 100 yards...
BigD
New Member
Posts: 2
Joined: Sun May 11, 2014 7:28 pm

Re: 44 mag 300gr load?

Post by BigD »

Ruger 77/44 with SRT Arms integral suppressor, 1:11 twist Douglas match barrel
H110 powder 15.5gr
Hornady XTP 300gr
Win LP primers
Starline new brass
No crimp
OAL 1.610-1.615
80 degrees temperature (NE Texas)

String #1:
1011
990
976
1001
1009
993
982
Range 976-1011
Avg 995
Extreme Spread 35
Std Dev 12

String #2:
993
998
997
994
987
1021
1008
992
1005
995
Range 987-1021
Avg 999
Extreme Spread 34
Std Dev 9

By the way, almost the same exact results were obtained firing a third string through a Ruger Super Redhawk with 9-1/2 inch barrel
Billythepoet
New Member
Posts: 4
Joined: Sat Oct 01, 2016 8:35 am

Re: 44 mag 300gr load?

Post by Billythepoet »

r wrote:300 xtp, 300 sierra, 300 nosler all in silent destroyer with 8.9 grains unique runs right around 1060 and below the sonic crack threshold--I have e-mailed with denall and he uses cast in his personal 77/44 (since these come apart). have used rcbs 300 cast with & without gas checks at 7.8--7.9 grains unique also---lee 310 cast at 7.4 grains or more blows the mag out every shot(7.2 grains is recommended max load-for a handgun)---hornady also has a 265 rn sp jacketed that does well at 9.1 grains however--since Connecticut they have evaporated(#4305)--only see single boxes here or there

Thanks for this! I've been googling for hours trying to find a load for these 300gr sierras.
User avatar
Fulliautomatix
Silent But Deadly
Posts: 253
Joined: Sun Sep 18, 2011 7:46 pm

Re: 44 mag 300gr load?

Post by Fulliautomatix »

Here's another source of load info: http://www.hodgdonreloading.com/data/pistol
Speak softly, and carry a big stick.
Billythepoet
New Member
Posts: 4
Joined: Sat Oct 01, 2016 8:35 am

Re: 44 mag 300gr load?

Post by Billythepoet »

I should have clarified that I was wanting to use Unique, but I appreciate that link.
Tackleberry47
New Member
Posts: 6
Joined: Thu Apr 19, 2018 10:29 am

Re: 44 mag 300gr load?

Post by Tackleberry47 »

I use a 290gr cast in my 44mag, titegroup powder. Work great.
Post Reply