Tons of good loads for the 375 H&H. I would start with appropriate powder(s) you already use. I shoot 250gr Sierras, Win 760, Win primers and Remington brass. I only push them to 2700fps. Trajectory very similar to a 180gr 30-06 load. Recoil is very manageable and much less than full house 270gr...
The 358 is one of my favorites and I hunt with it a lot. Deer, moose and elk.
Two things I always consider:
1. Max range I have retained velocity for reliable expansion. I don't know your numbers but will bet you'll be at around 1800 fps at around 250 yds.
2. Max range I can hold on hair and POI...
The 405 gr loads are typically around 1300 fps. The 300 gr load should be around 1800 fps. Any will whack a deer. They likely will not shoot to the same point of aim. I use 300 gr bullets because that's what shoots the best in my rifle.
I had originally loaded 200 gr Hornadys when I started messing with the 358. They shot well and worked on whitetails. The best velocity I could get was a little over 2500 fps. I get right at 2450 fps with the 225 gr Partitions and Sierras and that's not a "hot" load. That's with a 20" barrel...
It can be... but some things to consider. As Fotis said with a BLR it's too long and seating it deep is not a good option. You'll use up useful case capacity and the fact ABs like a jump just makes it worse. If you have a bolt gun with a longer magazine and appropriate throating it could work...
If there is an "off" shoulder, then there must be an "on" shoulder... and everything I shoot "drops in their tracks" (except what I wing-shoot). :wink:
Can be a controversial topic. I crimp all my reloads. I don't target shoot other than prep for hunting. Hunting ammo is subject to a lot more "abuse" than just loading it up, putting it a nice box and taking it to the range and shooting it. I don't worry too much about bullet pull or setback...
I have a Model 65/218Bee. Go Browning. I won't go into the history but there is no compelling reason to choose a Marlin unless you are a big Marlin fan and/or have something in general against Browning/Winchester.
Almost all my rifles are Rugers - MKlls, Hawkeyes and #1s. I have a couple of short action BLRs. The first one I purchased to get a 358Win as it wasn't available from Ruger at the time. The 2nd BLR in 300WSM, I bought due to my experience with the first. I have since acquired a Hawkeye in...