125 Sierra's in a 308 Win

I used 50grs of IMR4350 with the 125gr Speer TnT and it shot some excellent groups, but I didnt shoot them over the chrono and there is no doubt that they are slow, but they sure shot good.

My best load with the 130gr TTSX was with 45grs of VV N-133. It went 2989fps Avg. I tried 7 other powders with this bullet and none matched the speed or accuracy of that load.

Specifically, I had used AA2230, AA2520, Win748, H322, H335, Benchmark, H4895.
 
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Viht N-135 with Fed 215 magnum primers works real nice in my short throated tight bore Kreiger.
 
Try 25.3Gr H4227 2.815" OAL CCI 200 Primers Winchester Brass.

Start 23.7gr and work up to this load or your desired level of accuracy.
 
Wini 748 is a hands down winner with the 125-150g Weight...

I killed 12 deer with the last 308 that I had with the Sierra 125g, loaded with 51.5g of 748 which produced a muzzle velocity of 3150 and shot 3/8" groups(3 shot) out of my rifle. We have since had half a dozen or more 308's in my family that shoots the same bullet with 49.5-52.0g of 748 into tiny groups very fast.

The 150's love 748 also.

Good luck!
 
I would urge caution with any recommendation involving the use of extremely fast burning rate powers and the resulting large airspace in the case.

And I'll leave it at that.
 
Al Nyhus said:
I would urge caution with any recommendation involving the use of extremely fast burning rate powers and the resulting large airspace in the case.

And I'll leave it at that.
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No disrespect intended but SEE effect the Secondary Explosive Effect occurs with small charges of Slow burning powders in a large case.

Small charges of powder are safe in Large cases for example every load in the
Lyman cast bullet handbook 3rd edition proves this. These are using cast bullets instead of jacketed. You can use the same loads with some adjustments in most cases for jacketed bullets. Keep in mind jacketed bullets with these loads are 5000-8000 cup higher in pressure in .223rem and .308win than the loads listed with cast bullets.

Do not double charge a cartridge.

Load one round at a time. Add Powder and seat bullet.

Do not use the lightest loads use a middle value load with a jacketed bullet.

Use normal primers instead of magnums.

Remember that small charges of powder in the case are position sensitive. Angle downhill or uphill causes increased pressure. Shooting off a bench is level and more consistant.

Many of the faster powders designed for handguns or shotguns are temperature sensitive more so than rifle powders. Be aware of this when developing and shooting the load.
 
Al Nyhus said:
I would urge caution with any recommendation involving the use of extremely fast burning rate powers and the resulting large airspace in the case.

And I'll leave it at that.
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What doesn't kill you, will make you stronger.

Nietzsche


(I love Nietzsche quotes)

Ben
 
I'll ask because I don't know.
Should'nt these reduced loads in large cases be used in conjunction with fillers. I have seen it stated in a reloading manual all reduced loads should be.

I've read the contention that SEE is caused by the primer flash overshooting a reduced load and igniting the front of the powder column. I'm sure its a rare occurence.
If that is the truly the case I would believe fast burning powders are just as susceptible as slow.

I've shot some of the reduced loads in a 308 just for fun. No fillers used. I discontinued the practice simply because I felt no need to tempt fate.
Why go through all the trouble of using a pistol powder in a rifle?

I use the term "reduced load" liberally. Your loads may create more pressure than most.

The two other powders I have in bulk that I would try would be Benchmark and 748.
 
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I found that fillers really jack up the pressures...

such as kopak that is used in life vests.

If you try 748 in the 308 with the 125's, you will not believe just how good it shoots.
 
Most loading manuals will say [ do not use fillers unless stated ]. I have squirrel hunted with 60gr Sierra over 5gr Bullseye in a 243 Winchester since the mid 60s and they shoot the same up down or sideways. I shoot a lot of reduced loads and have never detected any difference in how the powder lays in the case. Just my experience. Kenny
 
Why go through all the trouble of using a pistol powder in a rifle?

1.
Osteoarthritis Multiple Sclerosis and the lack of $ to Build a 30br.

Like the .308 but I don't like shooting 40 rounds with 150gr over 42gr powder.

I still shoot 30caliber holes at 2600fps even 110gr RN over 23.7gr Hodgdon Lilgun gets it done with nice clover leafs at 100yds.

2. Cost of shooting has gone up regular bullets cost as much as match bullets used to. I shoot hunting Spire points as they group almost as well as match bullets for practice courtesy of NRA Reloaders manual 1989 Article on 30-06 comparison of brass, primers, Bullets on standard deviation, velocity and group size. Also shoot military surplus and cast bullets to reduce costs.


3. Dare to do something different. Lots of things work as good or better than some of the stuff on TV or in Magazines. $ are the sponsors of these information sources.
 
As for case fillers they improve consistancy of the loads. Few cast bullet shooters use fillers. Pinch of dacron etc. also state that fillers can cause a ring in the chamber or throat of a barrel.

http://www.freepatentsonline.com/4157684.html

http://www.go2gbo.com/forums/index.php?topic=84261.5;wap2

http://www.thehighroad.org/archive/index.php/t-144076.html

http://www.nfa.ca/content/view/118/197/

http://www.akfiles.com/forums/archive/index.php/t-19803

http://www.pufflon.com/

IMR SR 4759 Accurate

Trail Boss

Accurate Arms 5744

Designed for reduced loads.

SR 4759 and an old LEE Reloaders manuals easy to make reduced accurate loads.
 
I have been using 748 and Sierra 125 for years with very very good results. Work well for 200 yds high power as well.
 
Rflshootr said:
I'm curious. How did you find out about 5 grains of Bullseye and a 60 grainer for a 243 win?
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A friend of mine was shooting these loads when I bought my rifle. I have no qualified source that this is safe or a good idea. The mention of how the powder lays in the case affecting accuracy prompted me to use this as an example. This combination my experience has been, it doesn't matter. Maybe with another powder it would. I am on my third pound of bullseye so I have fired several rounds. I also use it in my AH for squirrels. Kenny
 
How did we go from......

125s to "extremely fast burning rate powders", to shooting squirrels w/a .243??? WW748 is not an "extremely fast burning rate" powder. And 5 grs of bull has more than enough pop, or poop, to get a 60grnr out a 6MM barrel; I've used .5gr of it w/a 55SX to shoot night creatures in a .222 w/no problem.
 
Get some 748 and put the spurs to her....Im getting 3250 with the 125s and 3400 with the 110s, and you will be suprised how well they shoot.
 
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