Anyone have experience with both of these bullets? I bought some 150 TTSX to load in 7PRC and am thinking maybe I should've gone with the 168 LRX instead. I know they're close in numbers. The Barnes tech I spoke with said those 2 bullets in particular both open 1.7x down to 1500 fps. Initially I was thinking the LRX wouldn't stabilize given my 1:8.5" twist but after checking the numbers again in the JBM calculator they should be fine.
Barnes 7mm 150 TTSX vs 168 LRX
- Thread starter Jon87
- Start date
- Location
- Saskatoon Saskatchewan
They stated the ttsx would open to 1500? That's surprising to me. If they have similar bc and you're not shooting elr I would go 150ttsx and push it fast. I would think with that case capacity 3400ish should be doable with the 150
Yeah, that surprised me as well. I think in general the LRX is advertised to open down to 1600 fps while the TTSX to around 1800 fps. He said it really varies by individual bullet design and caliber though. Of the 7mm ones I asked about he said:
139 LRX 1400fps min
145 LRX 1600fps min
168 LRX 1500fps min
150 TTSX 1500fps min
Ha ! Not sure that you know that the 7 PRC holds about 3 grs LESS than a 7 REM Mag ! So 3400 fps ??? Not a chance EVER ! RJ
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I drive the 150TTSX at 3400fps out of my 7mmstw, it's not happening with the 7mmPRC.
But having PRC on the headstamp adds at least 200fps! Lol
Ah yes, the magic headstamp. I think it travels, I remember when the STW had it, and have known some older gents who were firm believers it was the "magnum" on the headstamp. Weatherby stamps too. Lol. - dan
I have owned 7 rifles in 7mmstw, all with 26" barrels, some would top out at 3400fps with a 140gr, and some would do 3400fps with a 150, with no pressure signs. The 1 in 10" twist barrels, seem to produce more velocity than the 1 in 9" twist rifles.And that’s a really HOT load ! I have a 7 STW and a 7-300 WBee . So I know .RJ
DiabeticKripple
CGN Regular
- Location
- Red Deer, Alberta
im at 2950 with 65.3gr H4831sc in my 24" 7 PRC
had it up close to 3100 but groups were opening up.
had it up close to 3100 but groups were opening up.
prarie_boy
CGN Regular
- Location
- Just across the bridge to nowhere
I have a similar load with my 28” barrel 7mmx300 WBY(150TTSX) doing 3400 FPS safe load from a pressure standpoint measured case head expansion and lack of primer pocket stretch over 5 loadings.
And that’s a really HOT load ! I have a 7 STW and a 7-300 WBee . So I know .
Agree. I've owned both (and still have my first stw, out of three). - dan
