That’s a good question, because recoil does complicate a few things, at least for me. I had groups with higher recoiling guns that were shifting almost 1 MOA depending on the position, while the 243 groups weren’t.
The main issue is holding on, but not too tight. I’ve never been a fan of simply letting go of the forend, even when shooting over a pack, because of the extra muzzle jump and it’s much more difficult to get back on target.
Maybe it’s second nature to others, but it took years to understand the importance of gripping hard enough to not slip off the forend and pistol grip, but allowing the arms to be 90% neutral and just along for the ride until after the shot, then quickly pull the gun back on target. That’s somewhat natural with lower recoiling guns, but not being tense was something I had to overcome as recoil levels increased.
At least for me there’s no way around pulling the rifle into the shoulder with the trigger hand with at least enough force to snuggle the recoil pad up to the shoulder with a few pounds of force.
My original heavy recoiling rifle was an old tang safety Ruger with the hard recoil pad. I tried a PAST shoulder shield pad and really liked it, but it adds 1/2” to the length of pull, so I began shortening all the heavy recoiling stocks to be correct with the pad. While hunting a shot might be taken with the pack on, or clothing adds a bit of thickness, so the shortened length of pull isn’t noticed in the field.
Problems holding the rifle really show themselves when firing two or three shots quickly - strong arm it so muzzle rise is minimal and it pulled the point of impact. Limp arm it and muzzle rise is excessive, the scope is more likely to get into your face, and it’s hard to see dust or the target reaction. There’s a happy medium that has to be reinforced with practice to build muscle memory.
All that sounds pretty straightforward, like I over think it, but the amount of forend grip is so important to my shooting style, I even hold the forend on the bench when using a sand bag front rest, or when using short bipods. The light weight 7 mag that was super accurate showed another issue if the forend isn’t held not related to the above mentioned shift, it changes impacts up and to the right 1/4 MOA for me - if the gun wasn’t such a good shooter I would have never noticed. It might not sound like much, but how many thousands of rounds have many of us fired to get an extra 1/4 MOA. That seems to be more of an issue the lighter the rifle and higher the recoil.
If the rifle is squared up to prone, a host of eye relief and cheek weld issues can plague someone when switching to sitting or standing. It also forces someone to let go of the forend sometimes and hold it others. I suspect I’m not the only one with groups that shift when the forend is let go of, but it’s rarely talked about.
One year I decided to not use the 243 trainer/plinker/rock killer and only shoot the 7 mag and 340 wby. It wasn’t as pleasant, but more importantly it didn’t change my groups any - it did burn up a barrel by that fall, and that’s about it. Ever since then I don’t wear the barrels out of larger hunting rifles forcing them to be a trainer. There’s nothing wrong with it, there’s just no advantage, at least for me.
That’s all I have.
Put brakes on my 325wsm rifles so bench work isn’t as abusive. 
