What are some of the 150 grain loads you've used and what are the results.

I have several hunded Winchester 150 flat points from when they were $8.00 a hundred. Way back at least a year and a half ago.

Anybody shoot any game with 150's in a 30 herrett?

My best luck with 150 range (147 Mil FMJ and 155 Nos J-4)bullets has been with standard CCI primers and these powders: AA5744, WW296 and AA#9. My groups average 1.25 - 1.50 @ 100 yds. I used these in Big Bore IHMSA out to 200 yds. I wouldn't use them for big game though; I use the 125 Gr Nosler BT's for that.

Bill

Several years back when I first got my 10" Herrett I did a lot of research on the cartridge. At one point I got on the phone with the guys from Seirra Bullet customer service because I was considering using their 125gr spitzer as my dear bullet. They suggest that at the velocities I was able to achieve in the 30 herrett I would be better of using the their 150 flat point for more consistant expansion. Their 125 was designed for rifle velocities and use on game like antelope at long range. The 150 flat point is designed for lower velocity and would make a good choice. I wound up using nosler 125 BT's but their jacket is significantly lighter than the Seirra's 125. I like it for dear and charlies. I have however killed one doe with a 150gr. Muzzle velocity about 1800 fps. Distance 45 yards. Complete broadside penetration with 2" exit hole. Bang flop! I couldn't ask for much better performance. I think if you keep your range to a reasonable distance those flat nose 150's will do just fine.

I have a 10" RPM Sportsman in .30 Merrill, which is based on the .225 Winchester case. The .30 Merrill has slightly more case capacity (+2.0 gr.) than the .30 Herrett. Because of the scarcity of data for the Merrill, I often use Herrett data as a starting point when trying new powders/bullets. Velocities are similar with the Merrill having a 100-200 fps edge due mostly to the stronger 225 Win Case and the design of the RPM action.

The most accurate powders I have found in this caliber for bullets up to 150 gr. are H-322 and AA-2015. A few years ago we were culling deer in Texas, and I took that opportunity to compare the performance of some 150 gr. bullets. Bullets compared were the R-P 150 gr RN; El Dorado 150 gr JHP; Speer 150 gr FN; and the Speer 150 gr Grand Slam. The Speer 150 gr FP was the clear winner using tissue destruction as the criteria. All deer dropped with one shot, and no finishers were required.

Comparable performance can also be obtained by using the Speer 120 gr TNT, which was designed as a varmint bullet at rifle velocities. At .30 Herrett/Merrill velocities it expands reliably on deer/antelope sized animals. Even at longer ranges. Plus it has a much more streamlined profile than the FN 150 grainers. I will be using this bullet and H-322 for Wyoming Antelope in the Merrill this year.

I cannot take credit for this idea, as it was told to me by J.D. Jones a few years back, as a solution to the Nosler BT shortage at that time. I just never stopped using the TNT series in various handguns. "If it ain't broke, don't fix it."