220gr Matchking recipes for .300 Win Mag - Reloading for rifles - Metallic cartridge reloading

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220gr Matchking recipes for .300 Win Mag

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Sogmanzulu
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Posted: 16 August 2008 02:31 PM

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Does anyone have a reccomendations on .300 Win Mag recipes using the 220gr Sierra Matchking HPBT?

:confused:

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sako06
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Posted: 17 August 2008 07:22 AM

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I just subscribed to http://www.loaddata.com lots of info ,my favorite reloading manual is Noslers as I've found their most accurate load data has worked with my reloads perfectly. There are too many powders to choose from.My favorite powder is IMR 4831 for my Sako Finnsport 300wm I've killed mule deer at over 600 yards using IMR 4831,180gr Sierra GameKing,Rem 9 1/2 mag primer,used 180gr gamekings on a bull bison big mistake they never penetrated into the internal cavity ,should've used the 300gr Nosler Partitions I had loaded, learned a lesson not to read outdoor life before a booked hunt cause the info doesn't apply to all rifles.

Last edited on 17 August 2008 07:50 AM by sako06

Sogmanzulu
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Posted: 17 August 2008 04:00 PM

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Thanks for the link. I will check it out. By the way, those are some nice shots you took. The longest I ever took a Whitetail Deer at was 374yds. It was with a 7mm Rem Mag with Winchester Supreme Ballistic Silvertips (160gr). That was well before I started reloading...

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sako06
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Posted: 17 August 2008 04:25 PM

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Here's another source a friend uses http://www.ammoguide.com .

Last edited on 17 August 2008 04:31 PM by sako06

Sogmanzulu
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Posted: 17 August 2008 04:38 PM

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Thank you.

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sako06
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Posted: 17 August 2008 05:03 PM

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You're welcome,I copied a lot of info from load data for my Marlin XLR 45-70,454casull & SW460mag.I bought 100 225gr Magtech 454casull JHP all copper bullets with petals from midwayusa these should open up like cookie cutters.

miestro_jerry
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Posted: 18 August 2008 12:11 AM

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Here are the loads from notes from when I had the Win Mag.

220 Grain

H4831SC                   Start 64.3gr         Max 70.5gr

IMR 4831                            63.5                    70.0

RX25                                   69.0                    75.0

RX22                                   62.0                    70.0

This is a big slamming bullet that is going very fast.

Jerry

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Sogmanzulu
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Posted: 19 August 2008 09:25 PM

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Thanks Jerry.

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Sogmanzulu
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Posted: 22 August 2008 01:48 AM

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Jerry,

The IMR 4831 worked great with 69gr of powder I used. Now I just need to buy a Chronograph to see what they are coming out at. Once I obtain the speed of the bullet, do you know how I calculate the drop over distance. For example, I have the rifle sighted in at 200yds, but what will the bullet do at 300yds?

:confused:

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wheezengeezer
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Posted: 23 August 2008 11:08 PM

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http://www.handloads.com/calc/ this is one of my favorite websites.sounds like you are loadin without a manual.all the bullet manufacturers have ballistic charts.

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Sogmanzulu
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Posted: 23 August 2008 11:50 PM

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Thank you. I have book marked this sight for reference.

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sako06
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Posted: 24 August 2008 12:48 AM

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I load Nosler bullets and bought .308 220 gr Partitions for my Sako 300wm using data in their 4th, 5th & 6th edition reloading manuals max load is 66.5gr of imr 4831 mv 2736fps it is listed as the most accurate load tested and it is in my Sako.

Last edited on 24 August 2008 12:52 AM by sako06

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