Tried the 170 PB (172C) with 18 gr. Rx7 today, Liked the way it shot but accuracy was poor. Round holes @ 50 but large spread. 145 PB was worse @ 18gr, holes still round but all over the place. A little too hot, need to drop to 16. FTX with LeverE did 4 touching, pulled one an inch high. So I can still shoot the 336. Went through a bunch of 22lr in the mod 60. Did fine but hadn't cleaned or shot for a year, bolt was almost impossible to work.
Gotta add, young guy shooting his 30/30 corelocs - hitting high. He was frustrated trying to move the rear sight higher. Couldn't get his AR15 boresighted either. I mentioned it needed to go back vs forward. Didn't register with him.
edit: pulled the left overs this morning and looked at the target under mag. Looks like minor striping in the MG, a couple holes almost tipped, Grooves smudged on the target. 145 is harder alloy than 170. Barrel isn't leaded, hadn't cleaned it but last outing was with GC 185. Rx7 even at top end loads didn't have much recoil, soft push mo better. Normal 16gr 2400 is light recoil but still a bit snappy. Think I found a good use for the couple # of Rx7, not much 2400 left.
Gotta add, young guy shooting his 30/30 corelocs - hitting high. He was frustrated trying to move the rear sight higher. Couldn't get his AR15 boresighted either. I mentioned it needed to go back vs forward. Didn't register with him.
edit: pulled the left overs this morning and looked at the target under mag. Looks like minor striping in the MG, a couple holes almost tipped, Grooves smudged on the target. 145 is harder alloy than 170. Barrel isn't leaded, hadn't cleaned it but last outing was with GC 185. Rx7 even at top end loads didn't have much recoil, soft push mo better. Normal 16gr 2400 is light recoil but still a bit snappy. Think I found a good use for the couple # of Rx7, not much 2400 left.
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