KUIU Peloton 240 is the only fleece they offer that's worth considering for a mid layer. It also blocks wind pretty well and can double as an outer layer when conditions dictate.
Tule elk are not protected statewide. There's hunts for them but draw odds are terrible thanks to the ponzi scheme of the points system and the auction tags are to expensive for the poors.
The SAAMI spec chamber for a 7 RUM has a ton of freebore, like .400" to reduce pressure. If your gunsmith used a custom reamer there's a chance that the freebore is much shorter and that could potentially explain the situation.