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rwc101
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117gr HH in 270 WSM. 63.5 gr of H4350. 3387 fps. Still some slight wiping, but these are cheap Winchester brass.
Extreme velocity monos.
- Thread starter mtmuley
- Start date
cahunter805
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Looks like a promising start. Regarding the bolt wiping the bolt face may not be true/concentric to the bore and causing this as well. What brand of rifle is it?
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rwc101
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Winchester Model 70. Never seen wiping before.
cahunter805
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How do the cases extract? Does a fired case rechamber easily? You could back down a little more and verify accuracy also.
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rwc101
Guest
I'll try rechambering some. No sticky bolt lift when extracting.
BAKPAKR
Well-known member
124 gr HH. The chrono must not have liked this morning’s lighting because it didn’t pick up the next two shots (0.5 gr and 1.0 gr higher).
Awesome. mtmuley
track1
Well-known member
Shooting this bullet in my 270 wsm xbolt stainless stalker, fluted 22” barrel. 6.1 lb rifle. Consistent 3 shot groups .6 or less. 3630fps rl26 powder. Photo from this morning
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rwc101
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They didn't rechamber like unfired brass. Took a little more effort to extract.
131 grain hammer hunter started at 3060fps. These pictures are from antelope at 200 yards. Never took internal pictures as it was pouring rain. Lungs were destroyed and a petal went through heart. The antelope at 350 looks identical
Entrance
Exit
Entrance
Exit
Just got a text from a friend that put a 199 at about 3400 through one. No pics. Hopefully he took some. mtmuley
What sends a 199 at 3400?
.300 RUM. Browning 8 twist, 26 inch. N570 I think. Steve is at about 3600 with a 199 in the. 30-.338 Lapua. mtmuley
BAKPAKR
Well-known member
Although the velocity I got out of Retumbo behind the 124 gr HHs was amazing, the accuracy was not. I ended up with a load using H4831SC that I think will be close to 3800 fps (three shots with a 0.7 gr lower charge averaged 3759 fps). If I sight in to be 1.5” high at 100 yards, it looks like I will only be 1.5” low at 300. Since my Remington 700 KS, with its 3-9 Leupold, is more of a point blank range rifle than a long range rifle, I am pretty sure I am going to like this.
Best I could get with a 120 gr. TTSX was a little shy of 3000 fps. I loaded the 120 gr. HH for my 7mm-08. In my ladder test, the first node was at 3000. I found the second node right at 3200 fps, without pressure signs.
Rzrbck918
Well-known member
What does "wiping" indicate? Newish to reloading and just starting for my 270 WSM.
MThuntr
Well-known member
This is a pretty good write up
Understanding Pressure :: Primal Rights, Inc
Reading pressure is a required skill that all shooters must have. Whether you are shooting factory ammunition or your own handloads, you absolutely must be able to detect and interpret pressure signs on your fired brass.
www.primalrights.com
Rzrbck918
Well-known member
Thanks, I just briefly skimmed the article and have saved it for more careful reading. I appreciate the information.
BAKPAKR
Well-known member
I shot a whitetail doe at just under 200 yards with a 30 cal 124 gr Hammer Hunter that started out at about 3800 fps. The entrance/exit wounds looked about like those in the photos posted by @brockel. Although the bullet center-punched the lungs on a broadside shot, one of the petals must have broken off and traveled back through the diaphragm as the chest cavity was full of the stomach contents.
