LimbSaver is amazing (and Pachmayr too).
LimbSaver is revolutionary to me, changes the entire shotgun...
When I bought my Mossberg 930 SPX I was so proud, early early 2010 it was the hottest firearm on the market, internet forums were on fire with reports and reviews and everyone wanted one. When I took it out for the first time I hadn't shot a shotgun in a while and the last one I shot was an AMAZINGLY SOFT SHOOTING late 70s-era Remington 1100 with target load birdshot.
Short story, I loaded up the 930 with 00 Buck to 'break it in' and all I broke in was myself. I was shocked and a bit embarrassed. I'm like 150 lbs after two months worth of gorging myself and only 5'8"... but a tough guy in my own right, yet the shotgun was no fun at all to shoot. And I honestly said, how could I rely on this for home defense if I don't like nor want to shoot it?
So I installed a LimbSaver pre-fit/custom sized recoil pad on high recommendations from several forums including this one. All I can say is it was revolutionary. Amazing. CHANGED EVERYTHING and Now I could deploy the shotgun in combat like a surgeon.
I have since used another LimbSaver on a custom Remington 870 Tactical/Magpul/Police with a Magpul Stock w/ the adapter they sell for recoil pads. Amazing. I love it and it works like a charm. So when I bought a Saiga 12 for my old man for Christmas I got him a LimbSaver slip on, which really adds to the LOP but can be equally amazing for recoil reduction.
I have a Pachmayr 1" installed on my Manners Composite Stocks MCS T5A DBM I bought for my 700 and I also love it. It's a lot different than my LimbSaver and a .308 rifle is not a 12 gauge shotgun but I would not feel bad nor underequipped with Pachmayr pads on my shotguns. I am a LimbSaver recommender since I effectively and commonly use them so I have to say that's my #1 choice but... a Pachmayr would suit you I'm sure.