LOAD DATA HELP: Sierra MatchKing Boat Tail Hollow Point 30 Cal 168 Grain #2200

[usabaker]

Howdy Folks, I was hoping someone could help me out with the .308 Winchester for Sierra MatchKing Boat Tail Hollow Point 30 Cal 168 Grain Model: 2200 Load data. Its been awhile I guess but I thought I remember being able to download load data from their website but I can't find any.

I have the Hornady and Lyman load data books but wanted to take a gander on what Sierra was saying. Thank is advance!

Bill

Information

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[Jonzie]

Attachment 104275

Here you go

[usabaker]

The info is available online here, right from Sierra

Hi Jim, Thank you for your help. The link took me to an odd site, definitely not a Sierra site. Noticed though, the data is for 30-06, not 308Win.

Just before I got your message I did find it on AccurateShooter in the Serria308Win.pdf

Thank again!

[usabaker]

Sierra308Win.pdf

Here you go

Thank you Jonzie

[Jonzie]

Anytime glad to help

[Sunray]

You do not need bullet maker specific data. Loading is done by the bullet weight.
Data from every source/manual will be slightly different anyway. Load data in manuals reflect averages of all the loads tested using a given powder, with the exact components, test barrel length/rifling twist and environmental conditions on the day of the test.
For example, Hodgdon's site used a 168 grain Sierra HPBT bullet for the tests on their site. The Start load was 41.5 of IMR4064, giving 2518 FPS, out of a 1:12", 24" barrel. Your .pdf claims 39.7 grains of IMR4064 gave 'em exactly 2500 FPS out of a 1 in 10, 26" barreled Savage 12VSS. With no Start or Max load at all. Who's right? They both are. Different tests.
I wouldn't use that Sierra .pdf data though. Far too vague. Not that it's unsafe though. It's just not complete.
Oh and I used IMR4064 in my example because it works really, really well with 168 grain Match bullets in either .308 or .30-06.

[usabaker]

You do not need bullet maker specific data. Loading is done by the bullet weight.

Hi Sunray, I am aware that I don't need maker specific data, I was just curious as to what Serria load data was saying. I just bought my son a Mauser with a 1:11 twist 22" barrel 308W and since I have only loaded for 1:10 and 1:12 longer than 22" barrels I wanted to compare loads (also puled data from Vihtavuori, Hodgdon, and Alliant). I did note that all Serrias numbers were the furthest off when compared but they used a 26" barrel as well.

I'm looking for a starting load that will fully burn in a 22" barrel and gives 'good' results out to 300 as I work uploads. Thank you for the help and the IMR4064 recommendation.

[Bruce_in_Oz]

How fast do you want to go?

My "tree-ware" Sierra manual, 5th edition, 2003, lists a lot of loads, one of which uses good-old 3031. The test rifle was a Savage 12VSS, 26", 1:10" twist.

39.5 grains of 3031 got them to 2600 FPS and with "normal" pressure. 41.1 gn of 3031 is listed as MAX.

TWO reasons for that, I suspect: Pressure signs on the fired brass and the fact that it gets fairly tricky to get that amount of powder in a .308Win case and then stuff in a long-ish bullet and seat it such that it will run through all magazines. AND fit the throat of a "standard" .308 chamber. I also suspect the 155 Palma was invented to specifically work within the constraints o the .308Win / 7.62 NATO ammunition AND rifle specifications. Also, be aware that some of the longer, "slinkier" bullets may NOT stabilize sufficiently when fired from a 1:12" twist .308 Win, because even in a 26" barrel, the muzzle velocity achievable may not provide a sufficient spin rate.

The 168gn Sierra in a .30-06 can be safely driven to 2800 fps with a variety of powders.

Barrel length, chamber throating, case capacity, etc. all come into critical play when you start trying to "push the envelope".

[Parashooter]

Originally Posted by Sunray . . . With no Start or Max load at all. . .
I wouldn't use that Sierra .pdf data though. Far too vague. Not that it's unsafe though. It's just not complete. . .

Consider reading a little more carefully, noting each page includes -

INDICATES MAXIMUM LOAD – USE CAUTION
LOADS LESS THAN MINIMUM CHARGES SHOWN ARE NOT RECOMMENDED.

[browningautorifle]

Noticed though, the data is for 30-06, not 308Win.

I saw that and tried in vain to correct it...