35 rem in Marlin keyholing factory rounds

[robroy]

The rifle is a microgroove 336. I saw this happen the last range session when trying to shoot in a scope. After a very thorough cleaning of the bore and chamber and addressing the scope issues I got it back to the range, bore sited itand found the Federal Powershock 200 gr rounds were still keyholing. I switched to some Remington 150 gr pointed soft pointrounds and the keyholing imediately stopped. Nor did the 200 gr Rem round nose factory rounds. I'm wondering if this is just a case of the gun wanting what it wants or if there's something more going on. I'll clean it up good and see how it goes with the RD 190 gr I have loaded.

[Salmoneye]

I'd mic the Federal bullets and see if somehow they are undersized...

Stranger things have happened...

[Lefty SRH]

Thats odd, slug your barrel too if you are curious.

[helice]

More proof that lead is the best material from which to make boolits.:p

[badgeredd]

More proof that lead is the best material from which to make boolits.:p

Truer words can't be spoken!

Edd

[870TC]

I have a Marlin 35 that throws Hornady 200 grainer's sideways. Shoots Speer 180's fine and loves the RanchDog 190.

[geargnasher]

The rifle is trying to tell you something. Slug that bore and try some appropriately sized lead boolits.

Gear