Hey all, looking for some advice. I'm new to precision rifles. Been reloading for years, but trying to improve my hand loading. I don't compete, but retired with a 200yd range on my property. Recently purchased a MPA pmr rifle. Loads of fun. In an effort to take the shooter out of the equation for load development I purchased a Sinclair competition bench rest. I need a plate for the benchrest. I see that 3" width is kinda the norm for the bench rest bags. I looked at the Sinclair bench rest adapter plate, but it is not compatible with an arca mount. Anyone have a suggestion for mounting a bench rest plate to my rifle with an arca clamp? I can get a cheap arca clamp, just need a suitable plate to affix. Thanks in advance!