Originally Posted by
Humpy70
Amen on the No 5 being a real kicker. I have had two of them and they were no pleasant to shoot at all.
I assume you are going to reload for it. If you want a longer case life don't full length size the cases, just size it down to where the shoulder is only moved back about .002" and it will chamber just fine.
You might also try some 308 bullets in it. I have seen 303s shoot them very well.
Forgot in case your FL die doesn't grip the bullet like you want RCBS makes and 303 die marked 30 cal or you could go to the old standby and get a 308 Win neck size die and just size the neck area with it.