30 BR 8208 and 150's?

[Philly]

I seem to have more 8208 than anything besides maybe some 2015. Anyone have any load info for the 150's with either of these powders? Thanks, Phil

 

[FNSafari]

IMO, way too slow a powder for effective use, but I have never tried it. I did flirt with Benchmark and 125 grain bullets long time ago, never could get the velocity I wanted but they were reasonably accurate at 2600+- fps. I got the velocity I wanted and superb accuracy with H4198 or N130. Case capacity is the issue.

 

[KMart]

The Sierra manuals have loading info for 150 grain and heavier bullets. Looks like 2600-2700 fps in a 26 inch barrel is max

 

[RGRobinett]

Be aware that the typical 30BR chamber/reamer will feature ZERO to < 0.010" of free-bore, while a typical 150 Gr. bullet will "want" more like 0.150" of free-bore. With the longer bullets and no free-bore, you'd sacrifice substantial capacity, thus velocity potential. Further, yoou'd be best served using a 1:14", or, 1:15" twist . . . or, even faster. RG

 

[RossL]

Happened to see your question. 8208 should work fine with a 150 gr bullet.

I purposely had my 30 BR reamer made with more freebore so I could shoot longer bullets. I have been shooting 168 gr bullets for over a decade.

I bought several hundred 168 Hornady HPBT match bullets and use 33.5 gr of IMR 8208 XBR for a velocity of 2490 with a 24" barrel.

 

[Philly]

Happened to see your question. 8208 should work fine with a 150 gr bullet.

I purposely had my 30 BR reamer made with more freebore so I could shoot longer bullets. I have been shooting 168 gr bullets for over a decade.

I bought several hundred 168 Hornady HPBT match bullets and use 33.5 gr of IMR 8208 XBR for a velocity of 2490 with a 24" barrel.

What do you think a starting load would for the 150's should be?

 

[Philly]

Be aware that the typical 30BR chamber/reamer will feature ZERO to < 0.010" of free-bore, while a typical 150 Gr. bullet will "want" more like 0.150" of free-bore. With the longer bullets and no free-bore, you'd sacrifice substantial capacity, thus velocity potential. Further, yoou'd be best served using a 1:14", or, 1:15" twist . . . or, even faster. RG

I built it on a Howa mini action so I'm limited to 2.34" in the magazine.

 

[RGRobinett]

What do you think a starting load would for the 150's should be?

Last time I looked, Sierra loading manual listed 7mm BR load DATA: check it out, and, for equal bullet weight, use the same DATA, beginning low and working up. Due to expansion ratio, 30 Cal. pressure(s) with same bullet weight, should be lower, than the 7MM DATA, thus safe. Good shootin'! RG