I really like thumbhole stocks on my hunting guns. My first thumbhole was on a custom varmint rifle, built on a commercial mauser action, chambered in .257 Ackley Improved. It was my long range rock chuck rig at the time. We're talking forty five plus years ago, at least, but that was the gun that got me hooked on thumbhole stocks. Since then, I've probably had a couple dozen guns with thumbhole stocks, including six in my current collection of PCP air rifles.
My first airgun with a thumbhole stock, was my Logun MK II .20 cal., shown above. What a sweet shooting PCP. That rifle is pure hell on ground squirrels out to eighty plus yards. One of the features I really like about the gun, is the inline magazine that is part of the receiver. There is no removable mag to fill or lose, you just slide the spring loaded follower to the rear, drop in some more pellets, release the follower, and keep on hunting. It's like having a thirty five round repeater. That's how many shots I can get before needing to recharge the air cylinder on the gun.
My first air rifle with a synthetic stock was my .22 cal FX Monsoon semi-auto. It came with a synthetic thumbhole stock. To me, it's a nice feeling stock, and very light weight. FX would later offer the same gun with a walnut thumbhole stock. I'm very happy with the synthetic, but the walnut version does look quite nice.
I especially like the way a thumbhole stock carries in the field. When hunting, I carry my guns in my left hand with the stock resting in the crook of my left arm. It's very easy to hook my index, or middle finger in the thumbhole area of the stock, to secure the gun, while I use my right hand to operate my binoculars as I hunt along.
I liked the Monsoon and its thumbhole stock so well, that I decided to buy the FX Whisper as well. Same thumbhole type stock, but the Whisper is a twelve shot bolt action, where the Monsoon is a twelve shot semi-auto. I enjoy hunting with them both.
A few years ago, I decided to add an Air Arms 410 carbine to my PCP collection. I already had an AA 410 ERBSL full sized rifle, but when I saw that the thumbhole stock on the carbine would also fit the rifle, it was a no brainer to add the carbine to the family. I have also added one of the new AA 510 carbines to the airsenal, so now I just swap the thumbhole stock onto whichever rifle I'm in the mood to hunt with.
AA 510 CRBSL sharing the same thumbhole stock as the 410 ERBSL rifle, and the 410 CRBSL carbine.
Someday, if I happen to stumble onto another AA thumbhole stock for sale, I'll grab it for the 410 ERBSL rifle, and just swap the one I now have between the carbines.
Last spring, I picked up a DiscosRus, Boyds Blaster type, thumbhole stock for my .25 cal Marauder. They do a really nice job of inletting and finishing these stocks for the Marauder rifles. I just may pick up another one for my .22 cal, but for now, I'll just swap this one between the two guns.
For me, this stock has really transformed how this rifle carries and shoots in the field. It puts my trigger finger closer to the trigger blade, and makes it easier to operate the safety. Definitely money well spent, and it doesn't look to shabby either.
My last PCP purchase was the HW100T in the factory thumbhole stock. You don't hear a lot about these guns, but what a fantastic rifle. The thumbhole stock makes this rig a real pleasure to carry for long hunts in the piney woods. Definitely one of my favorite hunting rifles.
I've been eyeballing some of the newer FX PCP offerings, in their current style of thumbhole stocks, and maybe next year I'll add one of them in a .25 to the collection. Been kinda thinking about the Independence, but we'll see.