300 Win Mag loads...

Crackshot · Posted: Wed Aug 18, 2010 10:27 am Post subject: Re: 300 Win Mag loads...

Here is my recipe with Winchester M70 with Krieger barrel with 1-9 twist and 30" length.
220gr Sierra HPBT matchking
72.0gr IMR 7828
C.O.A.l of 3.345" this is longer than Sierra recommends, my rifle likes this and NEEDS it to shoot accuratley.
Gonna try some 240gr as soon as I can get time to load some up.

stovepipe · Posted: Wed Aug 18, 2010 11:19 am Post subject: Re: 300 Win Mag loads...

Good night that is a big bullet. I only got 1x10"

Sierra recomends 220gr 3.340" OAL for mag fed and to run them as long as you like for single shot apps just off the lands or wherever the gun likes it.

OAL for the 240MK is 3.535" for standard rifles and 3.6" for an M70 with a hart barrel 1x9" w/ match throat etc.

Do you have the PDF on their accruacy loads? Give them an e-mail and Phil will send it right over if you dont. Or e-mail me and I'll send it to you.

Crackshot · Posted: Wed Aug 18, 2010 2:59 pm Post subject: Re: 300 Win Mag loads...

Have it thanks! my rifle is a single shot now, no magazine to worry about.

slimjim · Posted: Mon Aug 23, 2010 5:51 pm Post subject: Re: 300 Win Mag loads...

Crackshot wrote:

Have it thanks! my rifle is a single shot now, no magazine to worry about.

What velocities are you getting with your 30" barrel?

Crackshot · Posted: Wed Aug 25, 2010 1:31 pm Post subject: Re: 300 Win Mag loads...

Average velocity measured 15' from muzzle with oehler 35P is 3952 fps with the load discussed of 72.0gr IMR 7828. and 220gr bullet.
This is only .2gr below the listed max load for this powder and shows NO signes of pressure in my rifle.

stovepipe · Posted: Wed Aug 25, 2010 1:42 pm Post subject: Re: 300 Win Mag loads...

Holy crap! 3900 + FPS w/a 220gr'r?

BIG BADDABOOM! Shocked

Even 2900+ is hauling arse with that slug....nice rig man! Like to see a pic of this 30" tubed monster if ya have one, PLEASE. Very Happy

chambered221 · Posted: Wed Aug 25, 2010 3:22 pm Post subject: Re: 300 Win Mag loads...

slimjim · Posted: Wed Aug 25, 2010 7:51 pm Post subject: Re: 300 Win Mag loads...

chambered221 wrote:

:wtf:

+1

Crackshot · Posted: Thu Aug 26, 2010 1:05 pm Post subject: Re: 300 Win Mag loads...

Oops It should read 2952fps........."thats 2952fps!" sorry!

stovepipe · Posted: Thu Aug 26, 2010 1:09 pm Post subject: Re: 300 Win Mag loads...

hehehe...I knew that. Still hauling butt for a big slug!

I still wanna see a pic of yer hot-rod w/ that yardstick tube!

Crackshot · Posted: Thu Aug 26, 2010 5:23 pm Post subject: Re: 300 Win Mag loads...

I'll see if I can find one in my photo CDs, if not Ill take one.

stovepipe · Posted: Fri Sep 17, 2010 5:40 pm Post subject: Re: 300 Win Mag loads...

Kabong report:

Angeles Shooting Ragnes
T- 80-80 *
H- 10%
E- 500'
W- variable @ 10 mph

Load-
66.7gr H-4831 (long cut, went up .2gr for a bit more pressure/case fill)
200 SMK .010" OTL
Remington Mag primer
Federal case, "09" stamp, neck sized only.
Approx velocity 2650-2700' p/sec.

After quick bore sight, shot off bench w/ bipod only and fist under buttstock.

100y zero- 3 shots clover leafed. (forgot camera, pic later if ya like), 1 shot every 5 mins, 3 shot strings. Barrel temp warm, never hot.

Impresssions: non-abusive report and recoil (well, for a 300 mag anyways)w/ this 9.5# rifle, even w/ muzzle brake. Primers are nice and round w/ no graining to speak of, bolt face is clean.
No sings of over-pressure at all. Clean too after 25 rounds. Barely any blue patches during clean up.

Replaced: rings and bases w/ Weaver Grand Slam.
Used a wee bit more right windage to zero than I wished but...
After 10 shots nothing came loose. Then zero'ed for 200.

Please note- I don't use bags or stands, I shoot prone or off the becnh w/ bipod only. Paper aint my thing, steel targets are. I also have a very shakey hold.

Doped 200, 300y gongs and silohettes w/ no misses. 400y was 75% as wind and mirage started to really get bad and inconsistent. I need a spotter for beyond 400y as I can't see the splash when I miss.
W/ spotter I can get dope for 500y and beyond with one sighter.

This is now a proven, nonabusive, very safe laod.

Next up: RE22 laod testing.

El Kabong is back to top gong-bonging form. The trigger on this rifle is spot on, zero creep, crisp and 2.75# pull. What a great shooter and the price is right. If you need a killer rifle on a budget, might wana take a look at Mossberg line-up. My expectations have been exceeded. Very Happy

stovepipe · Posted: Fri Sep 17, 2010 5:46 pm Post subject: Re: 300 Win Mag loads...

Crackshot wrote:

I'll see if I can find one in my photo CDs, if not Ill take one.

Still waiting for my picture Mr. Cracker. Confused

44marty · Posted: Sat Sep 18, 2010 9:06 am Post subject: Re: 300 Win Mag loads...

Stovey, I think you will like the RE22 powder. In my .300 WBY, 77.1 gr pushing a 180gr bullet (Hornady RN) is a nice, mild load that drops deer in their tracks and is very very accurate. I haven't looked at the .300 Win mag data lately, but a middle range charge weight of RE22 will probably end up being one of your favorites. It is a very consistent powder.

slimjim · Posted: Sat Sep 18, 2010 4:04 pm Post subject: Re: 300 Win Mag loads...

stovepipe wrote:

W/ spotter I can get dope for 500y and beyond with one sighter.

I'll see what I can do!