Recent content by frog stealer

Bought two trader Keith cotton versions for my Heym .577 double and Express Bolt. They work very well. I couldn’t imagine carrying my 13 pound double without one.

The 590 weight seemed to regulate better in my rifle compared to the 650's:

My data, shot out of a Heym 89b, 26" barrels. The row in green regulates best in my rifle:

https://www.gunsinternational.com/guns-for-sale-online/rifles/rifles-african-dangerous-game-safari-double/heym-89b-577-nitro-express.cfm?gun_id=103038231

Looks like some great regulation. Do you know what your shotgun barrel is choked? I’ve got a Heym 22S combo in 16ga/22 mag, and I was thinking about shooting some brennekes through it as well. What loads were the 9.3 groups shot with?

Brian, I took delivery of my Heym 89b in .577 last March. Unfortunately, I have some saving to do before I hunt DG with it, but I fully intend to do so. That being said, I’ve put hundreds of rounds through mine, with several different bullet types and weights, so feel free to ask questions on...

Not an A-frame, but I got the following results using a 300gr Sierra Gameking with H4350 in my new Heym Express, though it was very windy that day, and the wind was blowing me around the bench:

I ordered a Heym HPPR, which is a tarted up SR21. I picked up a base model SR21 from Gunbroker a while back in 308, and it quickly became my favorite hunting rifle, and that lead me to place the order for the 8x68s.

Almost forgot, I load quite a bit for shotshells as well…developing some 16 Gauge turkey loads for this spring with #5 nickel plated shot, these are 1-1/8 oz, loaded for a Heym 22s combination gun, with 22 Mag on the bottom.

A little bit of everything: 577 Nitro, 147 grains of H4831sc, 750 Woodleigh, Heym 89b 375 H&H, 82 grains of H4350, 250 Sierra GK, Heym Express 8x68s, 64 grains N550, 195 Hornady SP, Heym HPPR (should have the rifle this summer) 357 Maximum, 21 grains H110, 180 Speer SP, Encore pistol...

Go to the link provided, all calibers are listed.

Congrats on finally getting your Heym. The stock on yours looks amazing!

I believe the British formula is 1kg/1000 ft-lbs.

My Heym [emoji644][emoji645]b in 5[emoji643][emoji643] weights 13 pounds unloaded.

As others have mentioned, I would go with 4198 and a foam filler. You likely won’t be able to get down to 700 ft-lbs without nearly filling the case with foam, and I’d be worried about bullets getting stuck in the barrel at that speed. Stick to around 1500 to 1700 fps and lead bullets or...