In the aftermath of World War One, the Treaty of Versailles strictly limited the number of machine guns that the German military could keep in inventory. The main type that the Germans chose to keep was the MG08/15 (although a substantial number of MG08 guns were kept as well). Through the 1920s and 1930s, these Maxim guns were improved and updated in a variety of ways until finally replaced by the MG34 starting in 1936. Many of these updated 08/15s would be deployed in reserve areas during World War Two, but relatively few survive today.
The MG34/41 would be an excellent option with its great improvement compared to its predecessor, the MG34.With a Cadence Increase of 1200, A 250 Belt, A Huge Improvement in Recoil Control And being lighter
source is gun jesus himself aka Ian McCollum. he goes over original early war cadence which is 1200, that it had problems with out of battery firing and specific one that he is firing has modified bolt to fix the problem and has 950 cadence cause of the fix.
here is more info from wiki
The original MG 42 roller-locked action had an undesirable tendency to exhibit bolt-bounce. It was possible to unintentionally have high pressure gas moving backwards in the MG 42 towards the operator(s) when the action was not fully locked. This causes unacceptable dangerous conditions and out of battery ignitions can result in catastrophic gun failures. Enough guns were damaged and put out of action for repair or lost to warrant finding the cause and a solution. After investigation using high-speed photography the rollers in the bolt were found to “bounce” back and forth or oscillate up to 1 mm (0.04 in) when lock up is proceeding and then they settle into full lock up. Once the problem was identified, the temporary solution was to design and manufacture extra sturdy ammunition with primers with a slightly slower ignition time which allowed the rollers to settle into lockup and issue that ammunition specifically for MG 42 use.[35] A more practical solution to control the harmonics problem in the roller/wedge system and make the MG 42 less ammunition ignition timing sensitive was needed. The roller-locking system inherent problem was solved after World War II by developing and adding bolt-bounce preventing bolt catches to the action.[36] These can also be retrofitted to MG 42 bolts.[37]
It would have the Cadence of 1500 and not 900, apart from that the cadences were used more The light 1500 and the Standard 1200 where it was very common to use it in assaults and defenses Unlike the Heavy which was Rare and not the standard Cadence as you want to see it When in reality the others were where they adhered to their Doctrine of Suppress the enemy with high fire rate without letting them return fire
