Good to know for reference. I'll be putting together a 284 Shehane in a few months time so this is useful reference data. If I could hit 2800-2820fps and achieve reasonable brass life then I would be very happy. How do you find the primer pockets on the Peterson brass? My Peterson brass comes in significantly heavier than Norma 6.5-284 and Lapua 6.5-284 brass so I'm hopeful the primer pockets hold up a bit longer.
Berger 7mm 190gr long range hybrid
- Thread starter Willow
- Start date
Good to know for reference. I'll be putting together a 284 Shehane in a few months time so this is useful reference data. If I could hit 2800-2820fps and achieve reasonable brass life then I would be very happy. How do you find the primer pockets on the Peterson brass? My Peterson brass comes in significantly heavier than Norma 6.5-284 and Lapua 6.5-284 brass so I'm hopeful the primer pockets hold up a bit longer.
oht
Gold $$ Contributor
Only 3 firings on this brass. Primer pockets feel good. I did get up to 54.8 grains during pressure testing. Hard extraction but primer pocket feels good. This was a very compressed load just to find max. No ejector on this bolt so no info from that. FYI, Definitely over pressure and around 2830 fps.
Do you happen to know if the Berger 190s at 2755fps offer a ballistic advantage over the 184s at 2800fps? I don't have any software to allow me to test that theory...
I stand corrected, according to Strelok Pro in a 20kmph crosswind the 190's offer a small advantage to the tune of about 0.2MOA.
My main worry is whether the 190 is too much bullet for a Shehane to drive successfully without running into pressure issues.
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Willow, why not just use the berger data on their ballistics calculator to work it out?
Never mind.
But I would say that the 190 maybe a bit much for it. Just my opinion.
For those that have been asking about the difference in base to ogive here are the two measurements. The longer is obviously the new 190 grain bullets and the shorter are the 184s.
pat fulghum
( ͡° ͜ʖ ͡°)
Thanks....
What about OAL (Over-All Length)?
How close are those 190's from bottoming up in the Hornady gauge?
What about OAL (Over-All Length)?
How close are those 190's from bottoming up in the Hornady gauge?
Here you go but keep in mind this is a little less scientific simply because the 190s have a much better and more consistent tip than the 184s so there could be slight variations but they would be very minute.
184s
190s
Any testing of these through a Saum? I lost record 19 at Berger after 12 sighters with 195’s, very last string. My beloved 195’s. Primer looked just like others - as opposed to showing lower pressure from undercharge. 36 inch barrel. Supposition is jacket delamination.
I’ve only run about 500 of the 190s through a straight .284 but am building a Shehane as we speak to start testing as well. Looking forward to seeing what can be done with that combo.
Sure, I think I blew up a 195. I was wondering if the 190’s had been tested at high velocity/pressure.
In my case Sunday, I heated up my barrel with apparently too many sighters, and actually I also shot the 19 record shots pretty fast. (Shot 20 was delayed by the miss while I misjudged the change and was an 8.)
Those factors make me think my bullet delaminated. The other way it could miss the target is being loaded too low by mistake. But the primer of that shot didn’t look to me like it was a colder load. Edit: I hadn’t previously lost a 195, but in 2017/18 over more than a thousand shots, two of my Saums with the same barrels did blow up ELDM’s, then several Scenars, and then a single 180H, which had been both spotted and observed by me to nearly hit the target or strike it low, while other times hit the ground very short.
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The 195’s have the thin jacket so the likely hood of a blow up is very high. The 190’s have a thicker jacket like the rest of the hybrids is a safe bet
I'll be following your Shehane with interest John as I'm probably 5 months away from getting one up and running myself - waiting on lead time for a new stock before I start.
Hey Willow what stock you getting?
bighorn06
Gold $$ Contributor
Davidjoe, Thanks for the detailed explanation. I was not familiar with your type of competition. I shoot benchrest. AS soon as the weather breaks so I can get to my targets in the fields I will be testing My SAUM and 284 with the 190 and RL23 & RL 26. MY friend is working on his Sheahane now with the same components.
David
Omar also lost 2 shots with the 195’s in a Saum. Shots 19 and 20
McMillan Kestros ZR with RAD system...not cheap but they track awesome. Got a Borden BRMXD also on the way...
I dont envy you paying for that. Ken Noye way cheaper and just as good.
Nice mate...Have been shooting the Kestros R in straight 284 and it’s a hammer..and a Borden?! Spoiling yourself mate
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