Long Range Hunting Online Magazine

Go Back   Long Range Hunting Online Magazine > Rifles, Reloading, Optics, Equipment > Rifles, Bullets, Barrels & Ballistics

Rifles, Bullets, Barrels & Ballistics Applied Ballistics



LinkBack Thread Tools Display Modes
Unread 06-03-2007, 03:45 PM
Junior Member
Join Date: Jun 2007
Posts: 7
Re: 6.5/300wsm

Kirby recently built me a 6.5 WSM on a Win 70 using a PacNor 1 in 9" polygonal for antelope and coues.

I have been playing with the 130 Accubonds and 130 Scirocco IIs with H1000 and Ramshot Magnum Powders, Federal 215M primers, and WW 270WSM brass sized down.

With the 130 Accubonds and H1000, velocities went from 2857fps with 58.0gr to 3240fps w/ 66.0gr (about 40fps increase/gr).

With the 130 Accubond and Magnum, velocities went from 2861fps w/ 59.0gr, to 3087fps w/ 65.0gr.

Using the 130 Scirocco and H1000, velocities went from 3075fps w/ 63.0gr, to 3198fps w/ 66.0gr.

Using the 13 Sciroco and Ramshot Magnum, velocities went from 3088fps w/ 65.0gr, to 3253fps w/ 68.0gr.

Most accurate has been the 130 Scirocco w/ 66.5gr Ramshot Magnum. I am still playing around with seating depth.

Reply With Quote

Unread 06-03-2007, 05:34 PM
Junior Member
Join Date: May 2007
Posts: 4
Re: 6.5/300wsm

Nice to see you guys are having good results with the slower powders. I started shooting one in 2000. I had a friend who worked at winchester and was able to get me some brass. I don't think you could even buy a short mag at the time. I always had luck with RL19 60 gr. and 142gr sierra's. That combo got me small group 3.??" at the 1000 yard nationals in 2002 and first place four man light gun team at the 1000 yard nationals at Quantico in 2003. Maybe I'll try some of the loads suggested in my 6.5-300 hunting rifle.
Reply With Quote
Unread 06-03-2007, 06:00 PM
Silver Member
Join Date: Nov 2003
Location: South central Montana
Posts: 129
Re: 6.5/300wsm

S1 is not on LRH anymore.

I have built ALOT of 6.5mm WSM rifles and handguns. What questions do you have?

Kirby Allen(50)

[/ QUOTE ]
I put a 6.5wsm together on a Savage 110 large shank action, a PacNor 28" straight taper, SS super match, 1:8 twist, 5 groove.

I have loaded test rounds with 140g SMK's, resized Winchester 270wsm brass, GM215M primers, COL is 2.935", .010" off lands,

here are my test loads started as;
Retumbo 65.0 - 70.0g in .5g increments
H869 66.5 - 72.5g in .5g increments

after talking to some on the boards, I have since loaded a few more rounds with lower charges!

Retumbo 62.0 - 70.0g in .5g increments
H869 65.0 - 72.5g in .5g increments
I will stop when experiencing pressure signs

Does this sound safe? thanks
[image] rd=&sort=1&thecat=[/image]
Reply With Quote
Unread 06-05-2007, 07:28 PM
Platinum Member
Join Date: Jul 2004
Location: SW MO
Posts: 1,309
Re: 6.5/300wsm

I have played around with mine a little (when I am not changing diapers!) with the 129 gr SST moly coated shot through a 26" Lilja barrel on a Savage action. Norma 270 WSM brass and Federal 215GM primers.

I was hoping for 3300 fps and worked up 1 grain at a time with 7828SSC. Temp was 70 degrees. 66 gr gave me 3318 fps but there were light extractor marks on the case head and primer was flat. Bolt lift was easy but that still sounds like too much pressure for me.

I switched to H1000 and again went up 1 grain at a time. 64 grains gave me 3200 fps with round primer and no extractor marks. Like RedRabbit said, I was gaining around 40 fps per grain with that powder. I intend to load up a couple more of 65 and 66 gr when I get time. I think 3300 fps would be pretty much top end velocity with reasonable pressures and good case life.

Accuracy should be very good, as the rounds went on paper almost perfectly in a vertical line for the first 4 powder charges with maybe 0.2" horizontal spread at 100 yds. The last one opened it up to about 0.5" horizontal spread but that one had a mangled nose from being pulled from another case.

I intend to try some 130 gr AB's when I get my hands on some, but the SST should be a decent whitetail bullet. Killed one doe with it and it performed nicely on a quartering away shot.
The critters have to win every time, I only have to win once.

NRA Life Member
Reply With Quote
Unread 06-05-2007, 07:40 PM
Silver Member
Join Date: Nov 2003
Location: South central Montana
Posts: 129
Re: 6.5/300wsm

here it is;
Reply With Quote
Unread 06-12-2007, 12:48 PM
Silver Member
Join Date: Jan 2005
Posts: 126
Re: 6.5/300wsm

I have just read this post and noticed that you used up to 70 gr of Retumbo.I went to my bench and tried it and dumped 1/4 gr on the bench,so I tried to vibrate it in no go again.Pray tell us all how you can get 70 gr Retumbo in a 6.5 WSM [img]/ubbthreads/images/graemlins/confused.gif[/img]
Reply With Quote
Unread 06-12-2007, 06:15 PM
Silver Member
Join Date: Nov 2003
Location: South central Montana
Posts: 129
Re: 6.5/300wsm

I have not tested 70.0g of Retumbo in the 6.5wsm yet! CAUTION!! this is most likely too hot!! I just have it on the top end of my ladder test. My cartridge overall length is 2.937" and using 140g SMK (boattail) it is slightly compressed but fit fine.
Reply With Quote


Thread Tools
Display Modes

Similar Threads for: 6.5/300wsm
Thread Thread Starter Forum Replies Last Post
Wts/wtt 300wsm wfjames Guns For Sale 9 10-14-2010 07:31 PM
7-300wsm 65joe Reloading 6 06-30-2010 03:20 PM
7mm wsm 300wsm TOP_PREDATOR Rifles, Bullets, Barrels & Ballistics 4 06-22-2010 09:23 AM
WTS Win Mod 70 SS 300WSM snpr700 Guns For Sale 0 02-05-2010 12:33 AM
.270 WSM v .300WSM COBrad Rifles, Bullets, Barrels & Ballistics 18 10-28-2004 10:25 PM

All times are GMT -5. The time now is 09:42 AM.

Powered by vBulletin ©2000 - 2016, Jelsoft Enterprises Ltd.
Content Management Powered by vBadvanced CMPS
All content ©2010-2015 Long Range Hunting, LLC