RockyMtnMT
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A full dose of trail boss would run about 2000 fps.
Hammers will show less pressure than a conventional cup and core bullet. No reason to load down. They are not like typical copper bullets that increase pressure.Sierra reloading manual has 90gr loading info. H4350 and several other powder loading. See attachment. Most of the match shooter are using H4350 powder. Temp doesn't create a problem with the H type powders. Hornady didn't much in it. Sierra data will get you close. I would load down a little being using Hammer bullets. I don't how they push down the barrel. I am going to use Hammer bullets in my new rifle. All copper bullet can be a little hard to push down the tube, so chamber pressure can be up a little high. That the only cautions that I can think of.
Trailboss powder…I've used it many times for reducing recoil for new shooters learning to deal with recoil. Check Hornady, etc for appropriate loads.
Hammer bullets is the subject in question hereI'm working up Maker 95 gr .277 in my 270 Win using middle of the road Barnes load data. Several powders mentioned as Barnes has an 85 gr bullet of their own. Started light medium to just over medium loads with no negative issues. This data should get you started.
h414 same w760Bought some 85gr hammers to load as a low recoil .270 load for my son. Only data is for W760. Only powders I have close to that are IMR 4350 H4350 VV540 IMR 4451 and H380
Which powder do y'all suggest and starting point.
One of the owners of Hammer Bullets is in this thread alreadyWon't argue with you there. Just trying to help a fellow shooter with some powder choices. Best thing to do would be to talk to the people at Hammer Bullets and get asssistance from them. I have and they are very helpful.
This is incorrect with Hammer Bullets as RockyMtnMT has already stated, you will use more powder with less pressure with Hammers and will most likely end up well above book max for the given bullet choice if you can get enough powder in it to find pressure.Sierra reloading manual has 90gr loading info. H4350 and several other powder loading. See attachment. Most of the match shooter are using H4350 powder. Temp doesn't create a problem with the H type powders. Hornady didn't much in it. Sierra data will get you close. I would load down a little being using Hammer bullets. I don't how they push down the barrel. I am going to use Hammer bullets in my new rifle. All copper bullet can be a little hard to push down the tube, so chamber pressure can be up a little high. That the only cautions that I can think of.