20” proof, rifle +2
130 gr bullets
Mine liked the 147 ELD's best but also did well with the 140's.
147 ELD
Starline LR Brass
H4350 (I settled on 40.8 )
GM210M Primers
COAL- FROM THE
OGIVE
2.156" (147 ELD)
140 ELD
Starline LR Brass
H4350 (I settled on 41.0 )
GM210M Primers
COAL- FROM THE
OGIVE
2.182" (140 ELD)
Mine did NOT like the 130's
Also Proof Research has been known to put out a few turds now and then, so I would Bore Scope and carefully inspect your Barrel.
Other than that as long as you properly assembled your rifle and used a JP HP Bolt, full Mass Carrier and a H2 Buffer you should be GTG. (
You don't have to use JP for the carrier or Buffer) I used a Lantac Enhanced Carrier.
Also one of the biggest issues you need to take into consideration when reloading for a Gasser is proper neck tension. Run a piece of your Lapua Brass in your FL sizing die and make a generic 2.80 dummy round, then take a measurement with your calipers from the Ogive.
Insert that dummy in a mag and chamber it by releasing the Bolt Catch, extract the dummy around and then measure from the Ogive again and see if the bullet has moved forward from the inertia of the BCG slamming it forward and chambering.
If you're Ogive measurement changes by chambering the round you need to increase the tension on the neck.
