Assembling Barreled Action in Chassis

[racein56]

For an MPA chassis, is there any special bedding or bonding that smiths do when they assemble a barreled action into the chassis? Or is it as simple as bolting it together and rolling?

 

[spife7980]

Bedding will never hurt but the allure of a chassis is to avoid bedding.

 

[Steel head]

Bedding will never hurt but the allure of a chassis is to avoid bedding.

This.

 

[Kbh]

My only experience with an mpa was with a surgeon/ Krieger 6br barreled action. Bolted it up and it shot about 1/3 moa.

 

[6brshooter]

Check action for stress when torqued into chassis. If theres none, theres no need. Chassis like aics and manners gen1 mini chassis really benefit from bedding the tang. They are not supported at or behind rear bolt. Ehen rear bolt is torqued to 15in/lbs or more, it preloads the action with some serious stress. May not hurt accuracy noticeably, but I bet you'll see some flyers, 3&2 groups, and return to poa will not be good when barreled action is pulled out of chassis.

 

[EM92wx]

I believe MPA states you can bed it. Part of the allure is to drop it in and bolt it up.

 

[Ds91]

bedding is not needed in chassis. bolt and go