I bought a Marlin 30-30 about 30 years ago for $75. I got it for my kiddo who was about 12 and interest ed in hunting.
He hunted a couple years, shot a small forkhorn but only went a handful of times.
He grew up, moved away and that was that.
With a young family, he was looking for a home defense gun and asked me if he could have it.
I gave him the option of that rifle or an SKS. He chose the latter.
Now, with the 30-30, I had hundreds of cases that my BIL gave me so decided to reload.
Since I had plenty of IMR4350 and wanting to keep it simple, I started loading 170gr Speer flat nosed bullets with a full charge (34.5gr) of
4350. It wasnt the best combo but when I ran out of those bullets, I started using Speer's Deep Curl bullets in 170gr.
They stopped offering Deep curl in all calibers but .30 and .35.
A guy from Philly area sent me 80 or so he wasn't going to use and eventually, I got 500 from RMR bullets.
Now, Speer has load data for the 170gr Deep Curl which does not include my powder of choice.
I contacted them and was told not to use any powder not listed. Since I had 50 rounds loaded to the old data, i decided to do a water jug expansion test and came up withy this.
Left and bottom pic are 170 grain Deep Curls over 34.5 gr of IMR4350. The right bullet was a 10mm hardcast.
So, in my testeg, the deep curl expanded over twice the bullet diameter so I will continue to use it. The deer I shot with it didn't notice any difference in bullet speed.
Use established load data. Mine was done before I realized Speer had published their information.
Enjoy the 30-30.( and Happy belated birthday)
2020-07-30_09-59-09 by
poofy27, on Flickr
2020-07-30_09-57-19 by
poofy27, on Flickr