I consider weight for purchasing squirrel hunting airguns over most other hunting airguns. I do more walking when squirrel hunting using a light rig and a chest pack at best (unless I take a squirrel gun while deer hunting then I’ll either have a backpack or just tote a gun on each shoulder or one across the chest and the other on a shoulder). So for squirrels, I want my guns to be short and light for the most part. On occasion I will take my Brocock Bantam Sniper HR semi-bullpup out for squirrel hunting, but when I do I try to find one or two good spot to post and shoot from there. When I purchased it I didn’t consider weight. I didn’t know much about the Bantam Sniper at the time. The last time out squirrel hunting with it I nailed three from the same spot. I couldn’t locate the fourth. It’s not too heavy to carry or shoulder. I like the balanced feel of it.
I learned my lesson trying to squirrel hunt with a Huben K1 with a synthetic stock. I bought it for its ease of adjustability and semi-auto feature. It got heavy quick while walking with it and it doesn’t feel as balanced as a Lelya or even my Brocock Bantam. It’s heavy to shoot offhand to me because I’m not in shape for that heavy of a gun. To stand steady with it offhand takes decent strength and endurance. I’ve shot the K1 offhand, kneeling, and lying on my back and I’m still not used to the weight and weight distribution. As a result (and because I own other guns that serve similar purposes) I don’t shoot it much. With its weight, I may as well hunt with my .357 Benjamin Bulldog (or at least that how I felt sometimes carrying the K1 around).
The .357 Bulldog feels more balanced and comfortable to shoulder and to hold steady shooting offhand for me. The M357 is heavier iteration of the Bulldog, but for the difference in energy output I think I can tolerate the weight difference between the M357 and .357 Bulldog. I have yet to take the M357 on a hunt though. The way I deer hunt and coyote hunt I think the heavier Bulldog will be ok for those applications. I also must consider the gun’s weight with a scope. For a large airgun I’m adding an extra 2 pounds. For small scopes an extra 1.5 pounds. If I can keep a hunting gun for medium - large game under 9 lbs I’m usually content. For small - medium game under 7lbs is desirable, especially if I intend to do a lot of walking. When using night vision, spot light torches, or thermal scopes, I’ll factor in more weight because I’m usually seated with a bipod or hunting off of a tripod, so the weight factor isn’t too large of an issue. With heavier hunting rigs and night vision setups I’m usually using a backpack that can accommodate an air rifle until I reach my stand/post.