Speer 75 gr JHP for $18/100; Midway lifted limit

[StoneHendge]

Larry's had these for a while with a 2 box limit. Didn't make much sense to me since you've got a box or so left over after you find a load and don't know when you'll see them again. He lifted the limit so I bought a bunch to feed my 6x45 200-300 yard practice rounds, but they'd obviously feed an ARC hungry for zippy varmint / practice rounds too.

[Mel]

they are a nasty varmint/predator round i bought close to 1k of them at 152 yards i made a large jackrabbit absolutly disapear with one at 3000mv fps looked like his ass was sitting on a pound or 2 of tannerite
speer 75 on the left and sierra 75's on the right

[StoneHendge]

They look like a turbo jet. Do they hold accuracy out to 300? My plan is to use them on 6" steel out there. 3k is probably right around what I'll get with them out of my 24" 6x45.

[Old Bob]

All gone! Out of stock at Midway...

[Mel]

They look like a turbo jet. Do they hold accuracy out to 300? My plan is to use them on 6" steel out there. 3k is probably right around what I'll get with them out of my 24" 6x45.

i havent tsted beyond 200 @ 200y though they hold about .5 moa for me , the sierra 75 is much more accurate holding under .25 moa for me at 200 but the sierra's do not explode like the speers do on small varmints they do leave a rather large exit hole though , the sierras much more suited to larger animals say fox/yotes etc etc

[Thelaststraw]

I was actually just coming to ask a question or find a post  about bullets of the lighter variety.  Will 65-75gr bullets fly good from a 7 or 7.5 twist barrel? I got a faster barrel for the heavies ( I think I did right at least?) But am unsure if it's too fast for lighter rounds. I'm still learning and a bit of a newb with precision rifles.

[StoneHendge]

So far it sounds like they are working alright. The primary cause of concern is that the thinner jacket of varmint bullets can literally get thrown off of the bullet under high rpm. I've done a bunch of research across the world wide web on this and it doesn't seem to be as much of an issue as it did in the past - I'm guessing due to technological improvements in jacket design. Nosler bullets seem to be able to handle it the best and most stories of bullets going "poof" seem to be with Hornadys.  I would note that Mel's Monster barrel above does have reduced height rifling which might be easier on the jacket when it comes to keeping it on.

I've been intrigued by the lateral forces on bullet jackets at high rpm in fast twist barrels and prospects for deformation and slipage ever since the 224 Valkyrie had it's problems and there were the great twist debates. It doesn't seem to be anything anyone talks about or researches (I'm sure our military knows, though).

[Thelaststraw]

Thanks for the info, I'll give a few a try in my Monster 20". That wasn't specifically what I was worried about but had a feeling there could be some sort of negative effects with the high RPMs. I wouldn't call myself a slow learner but there is a lot to take in coming from strictly pistol background. That makes sense perfectly now that I'm reading it in response to my question.

[StoneHendge]

I couldn't get these to feed in a 6.5G Duramag in my 243 LBC. The gaping mouth catches the mag lip. Looks like I'll be sticking to Plan A and using them in 6x45.